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Chinese Journal of Oral Implantology 2018 Vol.23 Please wait a minute... For Selected: Download Citations EndNote Ris BibTeX Toggle Thumbnails Select Bivariate evaluation of the short implant diameter and length in type Ⅳ jaw bone of maxillary posterior area TU Huijuan, LI Yueling, YU Ming Chinese Journal of Oral Implantology    2018, 23 (1): 1-5.   DOI: 10.12337/zgkqzzxzz.2018.03.001 Abstract （232）      PDF （638KB）（347）       Knowledge map    Save Objective: To analyze the stress distribution of short dental implant with different length and diame-ter in the type Ⅳ jaw bone of maxillary posterior area, providing the theoretical basis for the clinical de-sign of short dental implant in the maxillary posterior region. Methods: Three dimensional finite element was used to simulate the stress size and distribution of implant-bone interface in 7 kinds of Bicon im-plants with different diameters and lengths under vertical loading and a 45 degree slope loading。 Results: The effect of implant diameter on bone interface was more significant than that of length, regardless of vertical load or lateral load. Under the lateral load, the von-mises stresses of group 6*6mm was mini-mum. Under the vertical load, the von-mises stresses of group 6*8mm was minimum, the second place was group 6*6mm. There were no significant difference between 5mm diameter implants with different length. Conclusion: The choice of short implant in the type Ⅳ jaw bone of maxillary posterior area: if the bone in good conditions, 6*6mm implant was suggested, if the bone in moderate conditions,5*6mm im-plant was suggested, if the width of bone was not enough, 4.5*8mm implant was suggested. Reference | Related Articles | Metrics Select Don't double disc immediate implant prosthesis from 48 cases of patients with curative effect and the influence of the PES grading analysis OU Yangbing Chinese Journal of Oral Implantology    2018, 23 (1): 6-9.   DOI: 10.12337/zgkqzzxzz.2018.03.002 Abstract （200）      PDF （638KB）（247）       Knowledge map    Save Objective: To study the double disc not immediate implant prosthesis to the curative effect of 48 pa-tients and the influence of red aesthetic index(PES) score. Methods: Selected from February 2013 to Au-gust 2014 in our line of single tooth immediate implant prosthesis treatment of 96 cases of patients.Ac-cording to random number table method was divided into observation group and control group, 48 cases in each group. The control shall be double disc immediate implant prosthesis treatment, observation group adopts double disc immediate implant prosthesis treatment. Respectively, compared two groups of plant-ing success rate, the rate of bleeding, pain, redness and swelling rate, ratio, PES score before and after the treatment, 1 year, 2 years after the repair of bone absorption and patient satisfaction. Results: The obser-vation group of planting survival rate was 100.00%(48/48), higher than that of control group 84.00%(43/48), and the incidence of bleeding, swelling and pain were lower than the control group, with significant difference( P<0.05). Two groups of PES grading after treatment respectively (12.5±1.4),(9.9±2.1), were higher than before the treatment, the observation group was higher than that of control group, with signifi-cant difference( P<0.05). Observation group 1 year, 2 years later after the restoration of bone absorption, respectively was(0.50±0.03)mm, (0.53±0.03)mm, were lower than the control group (0.60±0.60) mm, (0.66±0.04) mm, with significant difference ( P<0.05). Observation group of satisfaction was beautiful, comfortable satisfaction were 97.92%(47/48), 95.83%(46/48), higher than that of control group 85.42% (41/48), 81.25% (39/48), with significant differences (all P<0.05). Conclusion: Don't double disc imme-diate implant prosthesis effect significantly, can significantly improve the PES grading, improve patient Reference | Related Articles | Metrics Select The comparison of clinical effect between immediate implant and delayed implant in dental restoration of a single anterior tooth-missing WANG Qiang Chinese Journal of Oral Implantology    2018, 23 (1): 10-13.   DOI: 10.12337/zgkqzzxzz.2018.03.003 Abstract （214）      PDF （534KB）（298）       Knowledge map    Save Objective: To compare the clinical effect of immediate implant and delayed implant in dental resto-ration of a single anterior tooth-missing. Methods: Thirty-six patients undergoing anterior single tooth replacement with implants in our hospital from Jan 2013 to Dec 2016 were divided into immediate im-plant group(n=18) and delayed implant group(n=18). After the treatment, soft tissue around the implant was evaluated by the pink esthetic scores(PES) and the vertical resorption of alveolar bone were measured by CBCT. Results: The success rate of the two groups were 100%( P>0.05). The PES of the immediate group were higher than that of the delayed group at the time of final restoration, 6m after final restoration and 1y after final restoration( P<0.05). The vertical bone resorption distance of immediate implant group were significantly lower than that of the delayed group at the time of final restoration and 1y after final res-toration(P<0.05). Conclusion： The success rate of immediate implant and delayed implant were high. Compare to delayed implant, the vertical bone resorption were less and the esthetic effect of soft tissue around the implant were higher by immediate implant. Reference | Related Articles | Metrics Select Comparison of clinical efficacy between immediate implant repair and delayed implant repair of maxillary single front teeth YAO Zhongxiong, SHAO Jun Chinese Journal of Oral Implantology    2018, 23 (1): 14-17.   DOI: 10.12337/zgkqzzxzz.2018.03.004 Abstract （197）      PDF （541KB）（260）       Knowledge map    Save Objective: To compare and analyze the clinical effects of immediate implant repair and delayed im-plant repair of maxillary single front teeth. Methods: A retrospective analysis from April 2015 to April 2016 in our hospital treatment of 72 cases of maxillary anterior teeth. According to single patients were randomly divided into observation group and control group, two groups of 36 cases in each. The patients in control group was given delayed implant treatment, the observation group was given immediate implant treatment in the two groups. With 12 months of follow-up were compared between two groups. The suc-cess rate of dental implant, 1 months, 12 months after the classification of gingival aesthetics and the depth of periodontal pocket implant, subjective satisfaction after 12 months were compared. Results: The observation group and the control group of success rate was 100%(36/36), the comparison between the two groups was not statistically significant(P>0.05). The observation group 1 months after implant restoration, gingival aesthetics grading scores after 12 months respectively (8.92±1.31), (8.41±1.38), which were sig-nificantly higher than the control group (8.13±1.22), (7.73±0.87)(P< 0.05). The observation group of im-plant after 1 months, 12 months after periodontal pocket depth levels were (1.38±0.22) mm, (1.49±0.36) mm, which was significantly lower than the control group (3.71±0.08) mm, (2.02±0.14)mm(all P<0.05). The patients in the observation group were chewing function, attachment height and overall appearance satisfaction scores were (8.74±0.64), (8.74±1.24), (8.81±1.28), were significantly higher than that in the control group (6.67±1.32), (7.38±0.68), (7.56±1.32)(P<0.05). Conclusion: Immediate implantation and delayed implant treatment of maxillary anterior teeth single success rate, but the immediate implant in im-proving patients with gingival aesthetic grade and depth of periodontal pocket has better effect, can im-prove the subjective satisfaction of patients. Reference | Related Articles | Metrics Select Comparison of the curative effect of mini implant implants and oral arch support on the treatment of superior dental arch protrusion CHEN Wenhong Chinese Journal of Oral Implantology    2018, 23 (1): 18-20.   DOI: 10.12337/zgkqzzxzz.2018.03.005 Abstract （164）      PDF （529KB）（288）       Knowledge map    Save Objective: To investigate the curative effect of mini implant implants and oral arch on the treatment of superior dental arch protrusion. Methods: From January 2015 to February 2016, 80 patients with up-per arch protrusion were selected. In the control group, the maxillary protraction was performed on the arch of the mouth outside the arch, and the mini-implant was used to treat the maxillary protraction. The effect of correction of maxillary arch protrusion was compared between the two groups. After the correc-tion, the length of incisors was reduced and the width of incision was closed. The UI-SN angle and LI-MP angle of patients before and after intervention were compared. Results: The curative effect of maxillary protraction in mini group was higher than that in control group( P<0.05). In the observation group, 33 pa-tients were markedly effective, 6 were effective, 1 was ineffective, 39 were effective, and the total effective rate was 97.50%. In the control group, 21 were markedly effective, 9 effective, 10 ineffective and 30 effec-tive. Efficiency 75.00%. The UI-SN angle and LI-MP angle of the two groups before intervention were 81.31±3.15° and 98.13±7.11° in the mini-group and 81.32±3.16° and 98.13± 7.16° in the control group,respectively the angle of LI-MP was superior to the control group, mini-group 78.13±2.51°, 105.24±8.26°, control group 80.78±2.46°, 99.24±7.12° P<0.05. After the mini group orthodontic treatment, the length of the incisors was 2.65 ± 1.41mm, 6.87 ± 1.83mm larger than that of the control group(2.12 ± 1.01mm, 5.12±1.23mm, P<0.05). Conclusion: Compared with the treatment of superior arch protrusion by mini-implant support, the effect of mini-implant support is better and the reduction of incisors length, incisors width and head shadow measurement results, correction effect is good, it is worth promoting. Reference | Related Articles | Metrics Select Clinical effect observation of application of short implants in the posterior teeth with insufficient bone mass MENG Yan, ZHU Xuechen, DONG Qian, et al Chinese Journal of Oral Implantology    2018, 23 (1): 21-24.   DOI: 10.12337/zgkqzzxzz.2018.03.006 Abstract （196）      PDF （533KB）（317）       Knowledge map    Save Objective: To observe the clinical effect of short implant in the posterior region with insufficient bone mass. Methods: 40 cases of bone deficiency in the posterior teeth were implanted with 58 implants.The secondary stage operation was performed with 3-6 months after operation, and the permanent fixation was completed in 4-6 weeks. After 5-10 years of follow-up, a comprehensive evaluation of implant ef-fects was conducted. Results: The clinical and imaging examinations were performed regularly. Accord-ing to the standard of implant success proposed by Albreksson and Zarb, the cumulative success rate was 96.6% with 5-10 years. Conclusion: Application of short implants in the posterior teeth with relatively insufficient bone mass not only avoids excessive injury of bone graft surgery, reduces complications, but also reduces the pain and fear of patients, and reduces the cost of operation. Reference | Related Articles | Metrics Select An analysis of the effect of IMS（instrument management system）on infection management of the department of dental implant prosthodontics YU Minghong, HAN Xiaopeng, LV Lihua Chinese Journal of Oral Implantology    2018, 23 (1): 25-27.   DOI: 10.12337/zgkqzzxzz.2018.03.007 Abstract （211）      PDF （572KB）（254）       Knowledge map    Save Objective: To evaluate the effects of IMS(Instrument Management System) on the infection manage-ment of the department of dental implant prosthodontics. Methods: Selected 300 patients who were admit-ted to the dental rehabilitation department from January 2017 to December 2017, and then randomly di-vided into experimental group (P): IMS device + four hand operation, control group (D): Routine dispos-able treatment disc+four hands operation. Before and after treatment, the number of bacteria in the air, medical devices and staff gloves in the examination room was detected and the probability of the puncture was recorded. Results: The rate of bacterial detection and needle stab in the experimental group was sig-nificantly lower than that in the control group( P<0.05). Conclusion: The IMS device management system can effectively reduce the risk factors of the infection of the dental restorer, prevent and reduce the inci-dence of needle puncture. Reference | Related Articles | Metrics Select Immediate implant placement of the compromised site in aesthetic zone-a case report WANG Lijun, YANG Xiaodong, DONG Xin Chinese Journal of Oral Implantology    2018, 23 (1): 28-30.   DOI: 10.12337/zgkqzzxzz.2018.03.008 Abstract （206）      PDF （580KB）（295）       Knowledge map    Save Objectives: To observe the clinical results of tooth root fracture in the aesthetic area accompanied with the defect of the labial bone and the gingival recession by minimally invasive bone augmentation, immediate implant and immediate repair after tooth extraction. Methods: Minimal-invasive and flapless method were used for tooth extraction, the bone expansion technique was used to prepare implant bed,temporary crown was used to restore the occlusion, the restoration was completed by permanent crown 7 months later. Results: The status of peri-implant soft tissue was improved gradually, the gingival margin recovered to the same level as that of the contralateral natural tooth after 25 months. The soft and hard tis-sue surrounding the implant was healthy and stable, and the aesthetic result exceeded expectations. Conclusion: In this case, we figure out the labial defect could be successfully treated by using the minimally invasive bone augmentation. Reference | Related Articles | Metrics Select Application of process optimization in nursing quality management of dental implant outpatient ZHAO Xinxia, CHENG Jing, LING Xiongjian, et al Chinese Journal of Oral Implantology    2018, 23 (1): 31-33.   DOI: 10.12337/zgkqzzxzz.2018.03.009 Abstract （198）      PDF （511KB）（344）       Knowledge map    Save Object: To explore a management mode for outpatient nursing process optimization in dental implan-tology clinics. Methods: Design a management plan for outpatient nursing process optimization in dental implantology clinics, including nursing preparation before consolation hour, nursing cooperation in dental implantology therapy, posttreatment nursing interventions for single therapeutic unit, and management evaluation mechanism. Result: By applying the new management plan for outpatient nursing process opti-mization in dental implantology department of our hospital, the nursing preparation of environment and material are adequate before consolation hours, the nursing interventions for single therapeutic unit ups to 100%, therefore, it can effectively prevent the intra-hospital cross infection. Conclusion: The manage-ment for outpatient nursing process optimization can ensure patients get systematic dental implantology nursing and treatment as good as possible, increase the nursing satisfaction of patients and dentists, improve skilled health care with the tacit understanding between dentists and nurses, shorten the waiting time, prevent the intra-hospital cross infection, ensure the medical security, improve the nursing quality continuously, put the dental imlantology nursing management in an orderly manner. Reference | Related Articles | Metrics Select Brief introduction of immediate implantation nursing of CDIC conical implant on anterior teeth CHENG Jing, ZHAO Xinxia, LING Xiongjian, et al Chinese Journal of Oral Implantology    2018, 23 (1): 34-36.   DOI: 10.12337/zgkqzzxzz.2018.03.0010 Abstract （217）      PDF （514KB）（282）       Knowledge map    Save Objective: To summarize the nursing experience of implantation of CDIC conical implant after mini-mally invasive extraction of anterior teeth. Method: Extracting affected teeth by using minimally invasive surgery, a total of 55 teeth in 36 patients were inserted into CDIC conical implant, summarizing the nurs-ing methods of CDIC conical implant in anterior, intraoperative, postoperative and immediate repair of an-terior teeth. Result: Adequate preparation in preoperative, tacit coordination in intraoperative and excel-lent immediate repair nursing in postoperative is ensuring the success of immediate implantation of coni-cal implant operation. Conclusions: It is an important link to ensure the success of immediate implant surgery by the preparations of preoperative, coordination of intraoperative and immediate repair nursing in postoperative. Reference | Related Articles | Metrics Select Chinese Journal of Oral Implantology    2018, 23 (1): 37-41.   DOI: 10.12337/zgkqzzxzz.2018.03.011 Abstract （327）      PDF （672KB）（691）       Knowledge map    Save Reference | Related Articles | Metrics Select Chinese Journal of Oral Implantology    2018, 23 (1): 42-45.   DOI: 10.12337/zgkqzzxzz.2018.03.012 Abstract （150）      PDF （510KB）（293）       Knowledge map    Save Reference | Related Articles | Metrics Select Chinese Journal of Oral Implantology    2018, 23 (1): 46-50.   DOI: 10.12337/zgkqzzxzz.2018.03.013 Abstract （187）      PDF （512KB）（495）       Knowledge map    Save Reference | Related Articles | Metrics Select Comparison of three kinds of composite bone graft materials in the early of bone defect repair Chinese Journal of Oral Implantology    2018, 23 (2): 51-56.   DOI: 10.12337/zgkqzzxzz.2018.06.001 Abstract （256）      PDF （647KB）（310）       Knowledge map    Save Objective: Through the establishment of a simple model of bone defect, the complex of escoral hydroxyapatite(CHA)and platelet rich fibrin(PRF), the complex of coral hydroxyapatite and autogenous bone, the complex of coralline hydroxyapatite and recombinant human bone morphogenetic protein-two (rhBMP-2) and pure coral hydroxyapatite, four types of bone graft materials were implanted into four same bone defect areas. Then the ability of bone defect repair was compared between the four groups of bone graft materials in early different stages. Methods: Four bone defect areas were prepared in the six beagle dogs of canine bilateral tibial metaphyseal and were implanted with PRF/CHA, autogenous bone/CHA, rhBMP-2/CHA and CHA. The neck subcutaneou of six beagle dogs was injected with tetrac- ycline rochloride, calcein, alizarin red after second, fourth and eighth week, The six beagle dogs were executed and drawn after twelfth week, then bone growth condition of four bone graft areas was observed by gross specimen, hard tissue slices were made to compare the new bone formation in different bone graft area at different time by measuring fluorescence labeling rate. Results: Four groups of bone defect areas were completely closed in the gross specimen and there was no significant difference between the four groups of bone defect areas. Hard tissue slices observation result:four groups of bone defect areas showed orange fluorescence band after second week,namely new bone was found, the quantity of new bone:autogenous bone/CHA group>PRF/CHA group≈rhBMP-2/CHA group>CHA group, the green fluorescence band was increased significantly after second to fourth week, namely osteogenic ability was enhanced, the quantity of new bone:autogenous bone/CHA group>PRF/CHA group≈rhBMP-2/CHA group>CHA group, the four groups of bone defect areas showed red fluorescence after fourth to eighth week, the quantity of new bone:PRF/CHA group>autogenous bone/CHA group>rhBMP-2/CHA group>CHA group. Conclusion: During the twelve weeks, the osteogenesis effects of three kinds of composite bone graft materials were significantly better than that the pure coral hydroxyapatite, In the early stage, the quantity of new bone of three groups of composite bone graft materials were different in different time and autogenous bone/CHA group was best, PRF/CHA group was better than rhBMP-2/CHA group, after second week of operation, new bone was found in four groups of bone defect areas, the longer,the more of the quantity of new bone. Reference | Related Articles | Metrics Select A preliminary animal study on osteoconduction capacity of coralline hydroxyapatite cylinders YAO Zhongxiong, XU Shulan, SHAO Jun Chinese Journal of Oral Implantology    2018, 23 (2): 57-60.   DOI: 10.12337/zgkqzzxzz.2018.06.002 Abstract （138）      PDF （598KB）（321）       Knowledge map    Save Objective: The biodegradable coralline hydroxyapatite cylinder was implanted into the bone defect of the distal femur of rabbits, and the formation of new bone of coralline hydroxyapatite cylinder was dis-cussed, so as to provide references for the timing of implant placement. Methods: 30 white New Zealand rabbits were randomly divided into 24 rabbits in the test group and 6 in the control group. In the experi-mental group, 48 coralline hydroxyapatite were implanted in the distal femur of the rabbit, and 8 rabbits were sacrificed at 4, 8 and 12 weeks, respectively. Gross specimens were observed and histologically ana-lyzed. In the control group, all the animals were killed at 12 weeks, and the corresponding analysis was performed. Results: The 24 rabbits in the test group healed well. At the 4th week, there was only a few new bone formation at the edge of the implant. At the 8th week, there was obvious new bone ingrowth in the implant center. At the 12th week, both the edge of the implant and the new bone in the center in-creased. The percentage of new bone area in the test group was statistically significant between the 4th week and the 8 week, and there was no significant difference between the 8 week and the 12 week. In the control group, only a small amount of inflammatory cells and fibroblasts grew into the defect center, and no bone tissue was formed. Conclusion: The biodegradable coralline hydroxyapatite cylinder healed well after implantation into the bone defect of rabbit femur, and at 8 weeks, new bone was formed in the center of the bone, which is suitable for implant placement. Reference | Related Articles | Metrics Select Comparative study between alveolar ridge splitting technique and augogenous onlay bone grafting technique in aesthetic implant dentistry YUE Xilong, XU Sheng, LIU Zhonghao, et al Chinese Journal of Oral Implantology    2018, 23 (2): 61-65.   DOI: 10.12337/zgkqzzxzz.2018.06.003 Abstract （229）      PDF （566KB）（340）       Knowledge map    Save Objective: To make a retrospective analysis of the clinical aesthetic outcomes between alveolar ridge splitting technique(ARS)and augogenous onlay bone grafting technique(OBG) in the maxillary anteri-or region. Methods: 50 patients for dental implant treatment with either alveolar ridge splitting or augoge-nous onlay bone grafting procedure between January 2013 and January 2015 were included Yantai Stoma-tological Hospita. Of which, 25 patients undergone alveolar ridge splitting surgery with simultenoulsy im-plantation, while 25 patients for augogenous onlay bone grafting surgery received implants 6 months after. Single crown restorations were conducted 4 months after implant surgery. The following-up periods were 24 months, the following parameters were employed for the comparison: implant success rate, implant sta-bility, complications(minor complications: soft tissue fenistration, minor infection, bone fracture, major complications: soft tissue dehiscence, bone necrosis, inordinary sensory), and post operative reactions. SPSS17.0 was used for statistical analysis. Results: The success rates were 88% for alveolar ridge split-ting and 92% for augogenous onlay bone grafting respectively, there was no statistical difference between this two techniques(p>0.05). ISQ value immediately after implantation was 62.31±1.76 for alveolar ridge splitting and 75.12±1.21 for onlay grafting, which demonstrated a statisticaly higher primary stability for the augogenous onlay bone grafting group. 4 months after implant surgery, there was no statistical differ-ence for the ISQ value between this two techniques (83.28±2.15 vs. 82.21±1.53) (p=0.068). There were al-so no differnces for the rates of complications(p=0.214). The VAS evaluation for post-surgery reaction was 3.67 for alveolar ridge splitting and 6.13 for augogenous onlay bone grafting , which demonstrated a higher VAS for the augogenous onlay bone grafting group. Conclusions: Both of the alveolar ridge splitting tech-nique and onlay grafting technique are reliable techniques. The primary stability with augogenous onlay bone grafting is better than ridge splitting technique. There is no significant difference of bone graft bone absorption in the ARS and OBG Groups. Ridge splitting technique is more acceptable for patients consid-ering complications and post operative reactions. Reference | Related Articles | Metrics Select Study on clinical application of Bicon dental implant in the immediate implantation of posterior teeth GUO Shuigen, CEN Wen, WANG Yi, et al Chinese Journal of Oral Implantology    2018, 23 (2): 66-69.   DOI: 10.12337/zgkqzzxzz.2018.06.004 Abstract （239）      PDF （608KB）（308）       Knowledge map    Save Objective: The purpose of this study was to evaluate the short-term clinical outcomes of Bicon den-tal implants in the immediate implantation for posterior teeth. Methods: 24 patients(31 posterior teeth) with non-acute inflammation to be scheduled for immediate implant were selected to be treated with Bi-con dental implants after mi nimally invasive extraction and removing inflammatory tissue from January, 2015 to August, 2015. Autologous bone was implanted around the neck of the implant. Prostheses were re-stored after 3 to 6 months. The follow-up time was 18.6±4.3 months after the repair. To evaluate the clini-cal effect of Bicon implants in immediate implantation through clinical and radiological perspectives as well as patient satisfaction surveys. Results: During the follow-up, the survival rate of implants was 100%. The mesio and distal marginal bone loss during the implant is respective(0.32±0.41)mm and(0.28± 0.34)mm in a year after implantation. All dental implant were in normal function and patient satisfaction was very high. Conclusion: Bicon implants in the immediate implantation of posterior teeth could yield good clinical results in short term. Reference | Related Articles | Metrics Select The application of small-diameter titanium-zirconium implant in immediate implantation in bicuspid area DAI Junfeng, XUE Liyan, LIU Wanqi Chinese Journal of Oral Implantology    2018, 23 (2): 70-72.   DOI: 10.12337/zgkqzzxzz.2018.06.005 Abstract （145）      PDF （515KB）（367）       Knowledge map    Save Objective: To investigate the application of titanium-zirconium small diameter implant in immedi-ate implantation in the bicuspid area. Method: 46 implants of 40 patients from June 2015 to March 2017, were randomly divided into two groups,22 titanium-zirconium small diameter implants were applicated as the experimental group, 24 conventional implants were applicated as the control group. The changes of bones mass were observed, the load time, the success rate of dental implants were compared. Data using PASW 18.0 statistic software for statistical analysis. Results: The retention rate of the two groups was 100% in 1 years. The average loading time in the experimental group was significantly shorter than that in the control group, and there was significant difference in bone resorption between the two groups. Conclusion: The effect of immediate implantation of titanium-zirconium small diameter implant in bicuspid area is better than that of conventional diameter implant. Reference | Related Articles | Metrics Select CGF combined with Bio-oss in the preservation of tooth extraction socket XIA Zhoubin, REN Jing, ZHOU Tian, et al Chinese Journal of Oral Implantology    2018, 23 (2): 73-77.   DOI: 10.12337/zgkqzzxzz.2018.06.006 Abstract （271）      PDF （733KB）（335）       Knowledge map    Save Objective: To evaluate the role of CGF combined with Bio-oss in the preservation of tooth extraction socket. Methods: A total of 20 mandibular molar extraction patients were collected as the case of the tooth extraction socket in this study. The cone-beam computed tomography (CBCT) technique was used to measure the bone height, width, and density from CGF combined with Bio-oss 6 months before and after extraction. Results: There was no statistical significant difference in alveolar bone height between pre-ex-traction and post-extraction (P>0.05). The width had significant difference (P<0.05). There was no statisti-cal difference in density(P>0.05). After 6 months of implantation of CGF combined with Bio-oss bone meal, alveolar bone height and width absorption rate was lower than the average of the literature. Conclusion: CGF combined with Bio-oss bone powder can effectively maintain the height and width of alveolar bone in the extraction site of tooth extraction, and accelerate the generation of alveolar bone more quickly. Reference | Related Articles | Metrics Select A case of a single-tooth implant restoration in maxillary aesthetic zone with narrow gap WANG LIjun, DONG Xin, ZHAO Xinxia, et al Chinese Journal of Oral Implantology    2018, 23 (2): 78-80.   DOI: 10.12337/zgkqzzxzz.2018.06.007 Abstract （250）      PDF （538KB）（265）       Knowledge map    Save Objective: This study is aimed to investigate the single-tooth implant restoration in maxillary aes-thetic zone with narrow gap. Methods: This study did the implant surgery in a minimally invasive flapless way. And the permanent restoration was performed with an all-ceramic crown 4 months after the implant surgery. The restoration took the advantage of the teeth disorder to restore the gap with the cover of the dis-order to make up the narrow gap and disproportion between the teeth. Results: The color and the shape of the crown were in coordination with the natural teeth. And healthy pink aesthetics and proper white aes-thetics enhanced the whole facial aesthetic effect. The treatment effect was beyond expectation and the patient left with great satisfaction. Conclusion: The implant restoration in this study can meet both the functional and aesthetic demand of the patients with narrow gap in maxillary aesthetic zone which is sig-nificant in clinical therapy to some degree. Reference | Related Articles | Metrics Select Chinese Journal of Oral Implantology    2018, 23 (2): 81-83.   DOI: 10.12337/zgkqzzxzz.2018.06.008 Abstract （176）      PDF （511KB）（224）       Knowledge map    Save Reference | Related Articles | Metrics Select Discussion on standardized management of dental implant therapeutic room CHENG Jing, ZHAO Xinxia, TEN Lizhao, et al Chinese Journal of Oral Implantology    2018, 23 (2): 84-86.   DOI: 10.12337/zgkqzzxzz.2018.06.009 Abstract （192）      PDF （512KB）（337）       Knowledge map    Save Objective: To improve the efficiency of dental implant nursing treatment,and ensure the implant surgery to be executed safely and smoothly, Methods: The management process was set in dental implant therapeutic room: materials distribution was controlled with planning, materials placement was catego-rized with specified position and standardized management of drawer was deployed, the environmental ownership of respective functional room was clearly specified, the dedicated person was assigned to man-age dental implants and implant instruments, and the multiple brands of dental instruments were allocat-ed by following the standard process, the monitoring on the patients was strenghened throughout the whole surgery procedure with status logged. Results: In consequence, nurse's preparation time was shortened before dental implant surgery, and the cooperation between surgeon and nurse runed more smoothly, there-fore more surgeries could be accomplished by spending the same time while the surgeon's satisfaction be improved. Besides that, the collaboration skill among dental implant nursing team had also been im-proved. This practice also benefited the implant instruments recalling on the loss prevention. The sur-geon's specialized requirement was met, too. The nursing risk was decreased respectively to ensure the surgery been executed safely and smoothly. Conclusion: After the standardized management method, the efficiency of collaboration could be improved obviously between surgeon and nurse with the risks and faults decreased, the surgery could be executed safely and smoothly. Reference | Related Articles | Metrics Select Chinese Journal of Oral Implantology    2018, 23 (2): 87-92.   DOI: 10.12337/zgkqzzxzz.2018.06.010 Abstract （183）      PDF （534KB）（313）       Knowledge map    Save Reference | Related Articles | Metrics Select Chinese Journal of Oral Implantology    2018, 23 (2): 93-100.   DOI: 10.12337/zgkqzzxzz.2018.06.011 Abstract （168）      PDF （714KB）（356）       Knowledge map    Save Reference | Related Articles | Metrics Select Hydrophilicity of titanium with micro/nanotopographical surface promotes proliferation and osteogenic differentiation of human periodontal ligament cells LIN Zhili, LIANG Jianping, ZHUANG Xiumei Chinese Journal of Oral Implantology    2018, 23 (3): 101-104.   DOI: 10.12337/zgkqzzxzz.2018.09.001 Abstract （162）      PDF （558KB）（235）       Knowledge map    Save Objective: To investigate the effect of hydrophilicity of titanium with micro/nanotopographical sur-face on the cell viability and osteogenic differentiation in human periodontal ligament cells (PDLCs). Methods: Methods of anodic oxidation and sandblast-alkali heat were utilized to establish scale struc-tures. PDLCs were seeded on these two titanium discs, cell viability was detected at 1, 4, 7 and 14 days by CCK8 assay. Total protein values and alkaline phosphatase(ALP) activity were examined at 7 and 14 days. ALP, collagen-I(COL1) and runt related transcription factor 2(RUNX2) mRNA expression at 7 days were detected by qRT-PCR. The date was statistically analyzed with SPSS13.0 software package. Results: Compared with anodic oxidation surfaces, PDLCs on the sandblast-alkali heat surface discs with well hy-drophilicity exhibited enhanced cell viability, increased total protein values, up-regulated ALP activity and overexpression of ALP, COL1 and RUNX2 levels. Conclusion: Micro-nanotopographical surface of titanium implant in sandblast-alkali heat group promotes cell viability and osteogenic differentiation of PDLCs, which may be affected by its hydrophilicity. Reference | Related Articles | Metrics Select The influences of hyperbaric oxygen therapy on the proliferation and osteogenic differentiation of osteoblasts under high glucose condition DONG Kai, HAO Pengjie, ZHOU Wenjuan, et al Chinese Journal of Oral Implantology    2018, 23 (3): 105-108.   DOI: 10.12337/zgkqzzxzz.2018.09.002 Abstract （169）      PDF （618KB）（233）       Knowledge map    Save Objectives: The aim of this project is to investigate the effect of hyperbaric oxygen therapy (HPO) on the proliferation and osteogenic ability of MC3T3-E1 osteoblastic cell line under high glucose condition. Methods: The cultures were divided into four treatment groups: 1) physiological medium with 5.5mM glu-cose, 2) high glucose medium with 25.5mM glucose, 3) 5.5mM glucose + HPO, 4) 25.5mM + HPO. At dif-ferent time point, the cell proliferation, alkaline phosphatase, and mineralized nodule, osteogenic gene ex-pression were detected. The software program SPSS was used to analyze all data, values of p<0.05 was con-sidered significant. Results: 25.5mM glucose concentrations inhibit the proliferation,ALP activity, miner-alization and osteogenic genes of MC3T3-E1 cells. Furthermore, the proliferation and osteogenic ability of MC3T3-E1 cells were significantly improved after hyperbaric oxygen therapy. Conclusions: Hyperbaric oxygen therapy promotes the proliferation and osteogenic ability of MC3T3-E1 cells under high glucose. Reference | Related Articles | Metrics Select Role of different scale structures of titanium surface on the proliferation and osteogenic differentiation of human periodontal ligament cells LIU Gen, ZHUANG Xiumei, HU Renying, et al Chinese Journal of Oral Implantology    2018, 23 (3): 109-113.   DOI: 10.12337/zgkqzzxzz.2018.09.003 Abstract （203）      PDF （607KB）（260）       Knowledge map    Save Objective: To investigate the effect of titanium surface scale structures on the cell viability and os-teogenic differentiation in periodontal ligament cells(PDLCs). Methods: Alkali heat treatment at high and low temperatures were utilized to nano-modify sandblasted titanium with microtopographical surfac-es, compared with microtopographical surfaces of conventional sandblast-acid etching and smooth surface in titanium control. PDLCs were seeding on these four titanium discs, and the cell viability, total protein values and alkaline phosphatase(ALP) activity were examined at 7 days. qRT-PCR was used to detect mRNA expression of ALP, collagen-I (COL1) and runt related transcription factor 2 (RUNX2) at 7 days. The date was statistically analyzed with SPSS13.0 software package. Results: Compared with Ti control and sandblast-acid etching surfaces, PDLCs on the micro-nanotopographical surface discs in alkali heat treatment at high temperatures group and low temperatures group exhibited enhanced cell viability, in-creased total protein values, up-regulated ALP activity and overexpression of ALP, COL1 and RUNX2 levels. Conclusion: Micro-nanotopographical surface of titanium implant promotes cell viability and os-teogenic differentiation of PDLCs. Reference | Related Articles | Metrics Select Experimental study on comparison of lifting effect between maxillary sinus in IBS and Summers osteotome WEN Hongxia, FAN Yawei Chinese Journal of Oral Implantology    2018, 23 (3): 114-118.   DOI: 10.12337/zgkqzzxzz.2018.09.004 Abstract （231）      PDF （708KB）（266）       Knowledge map    Save Objective: To establish an experimental model of goat animal in the maxillary sinus and compare the effect of IBS osteotome and Summers osteotome on the maxillary sinus lift in goats. Methods: A large number of pre-experimental anatomical analysis of goat maxillary sinus, combined with goat CBCT to ex-plore the maxillary sinus lifting site, established an experimental model of goat animal lifted in the maxil-lary sinus. The 18 local goats with 36 maxillary sinus were divided into experimental group and control group. The experimental group used IBS osteotome. The control group used Summers osteotome. The 18 goats were randomly divided into 5, 8, 10mm according to the maxillary sinus lifting height. Three groups, each with 6 sheep heads, counted the number of perforations in each experimental group and control group and recorded the height of maxillary sinus lift during perforation. Results: An animal model was es-tablished for the maxillary sinus elevation in the 6-8mm lobe of the maxillary first molar of the goat. The number of perforation of the maxillary sinus was 0, 1, and 3 in each experimental group, and the number of perforation in the maxillary sinus was 1, 5, and 6, respectively. There was no significant difference in safety between the experimental group and the control group when the height was 5 mm in the maxillary sinus[(5.00±0.00) mm vs(4.92±0.20)mm, P>0.05]. The experimental group and the control group were in the maxillary sinus. When the height was 8mm, the difference was significant[(7.83±0.41)mm vs (6.58± 1.32)mm, P<0.05]. There was significant difference in safety between the experimental group and the con-trol group when the maxillary sinus height was 10mm. (9.17±1.57)mm vs(6.08±0.97) mm, P<0.05]. Conclusion: The maxillary sinus elevation of the maxillary first molar is significantly improved in the maxil-lary sinus. When the lifting height is less than 5mm, there is no significant difference between the two lift-ing effects. The lifting height is greater than 5mm. IBS osteotome has better improvement than Summers osteotome. Reference | Related Articles | Metrics Select Tooth-and locking taper implant-supported prostheses: a retrospective clinical study WANG Yi, CEN Wen, HUANG Jiangqin, et al Chinese Journal of Oral Implantology    2018, 23 (3): 119-123.   DOI: 10.12337/zgkqzzxzz.2018.09.005 Abstract （182）      PDF （732KB）（308）       Knowledge map    Save Objective: The purpose of this study was to evaluate clinical treatment outcomes of fixed partial den-ture with combination of locking taper implant and natural teeth as abutments, and to analyze relevant fac-tors. Methods: Since January 2013-January 2015, a total of 19 implants were placed in 11patients, 17 (89%) in the maxilla and 2(11%) in the mandible. The implants were connected to 23 abutment teeth, 20 in the maxilla and 3 in the mandible of the prosthetic restorations, 34 were porcelain-fused-to-metal, 10 were all ceramic crown. The observation period ranged from 1 year to 3 years recording the average annu-al marginal bone resorption, soft tissue around the implant, technical complications and patient satisfac-tion, and calculating the implant survival rate. Results: The implant cumulative rate for 3 years was 100%, and the average marginal bone resorption was(0.10±0.02)mm. During the following observation pe-riod, 1 patient with diabetes and periodontitis after postloading in 3 month, occurrencing mild gingival swelling, no significant spontaneous bleeding, no pain. About technical complications, 1 patient appeared the crown fall off, 1 patient appeared the porcelain shipping-off, the remaining patients no obvious abnor-malities. The satisfaction is high. Conclusion: The results from the present study support the findings that treatment that combines natural teeth and locking taper implants in the support of rigid superstruc-tures has excellent follow-up results. Nonetheless, results on this clinical study should be validated with a longer evidence. Reference | Related Articles | Metrics Select Clinical efficacy and safety evaluation of minimally invasive implantation in elderly patients with dentition defects GONG Botao, ZHANG Jianguo Chinese Journal of Oral Implantology    2018, 23 (3): 124-126.   DOI: 10.12337/zgkqzzxzz.2018.09.006 Abstract （121）      PDF （511KB）（267）       Knowledge map    Save Objective: To explore and analyze the clinical efficacy and safety of minimally invasive implanta-tion in elderly patients with dentition defects. Methods: 58 elderly patients with dental defect admitted from April 2013 to April 2018 were selected as the subjects in this study. They were divided into 29 cases in each group by random numerical tables. Among them, the experimental group performed minimally in-vasive planting techniques, and the control group performed conventional dental implants. Results: The effective rate of treatment was significantly better than that of control group（P<0.05）. The time of opera-tion and application of antibiotics were shorter in the experimental group than in the control group(P< 0.05). The incidence of complications in the test group was significantly better than that in the control group（P<0.05）. Patients in the test group were significantly more satisfied than those in the control group （P<0.05）. Conclusion: Minimally invasive implantation for elderly patients with dentition defects not only has a good therapeutic effect, but also can shorten the operation time, can also reduce the occurrence of complications, can improve the satisfaction of treatment, and has a better clinical efficacy and safety, worthy of promotion and application. Reference | Related Articles | Metrics Select Effect of root reduction flap on reconstruction of buccal keratinized gingiva in dental implants WANG Xinquan Chinese Journal of Oral Implantology    2018, 23 (3): 127-130.   DOI: 10.12337/zgkqzzxzz.2018.09.007 Abstract （197）      PDF （522KB）（313）       Knowledge map    Save Objective: To study the effect of root-reposition flap in reconstruction of buccal keratinized gingi-val. Methods: From June 2015 to June 2017, 100 patients with missing or too narrow buccal keratinized gingival were selected from our department of stomatology. According to the different methods of buccal keratinization gingival reconstruction were divided into control group and observation group with 50 cases in each group. Among them, the patients in the control group were treated with traditional implant meth-ods. In the observation group, the buccal keratinized gingiva was reconstructed by root reduction flap tech-nique. The reconstruction effect of buccal keratinized gingival was compared between the two groups. Results: There were 27 cases(54.00%) cured person in the observation group. The total effective rate of treat-ment was 94.00. Which were significantly higher than the control group 14 cases (P<0.05). After repair, the observation group of width of keratinized gingival was(1.85±0.71) mm, and the thickness of keratin-ized gingival was(2.91±0.53)mm, which was significantly better than the control group（1.23±0.33）mm, （1.98±0.46）mm(P<0.05). The gingival index of the implant teeth in the observation group was(0.38 ± 0.23) after 6 months. It was significantly lower than that in the control group (0.54 ±0.25)(P<0.05). There was no significant difference in gingival index, gingival bleeding between adjacent teeth and operation ar ea between the two groups. The degree of anastomosis of adjacent teeth, the beauty of crown and the de-gree of tooth imperfection in the observation group were significantly better than the control group(P< 0.05). Conclusion: The application of root reduction flap in the reconstruction of buccal keratinized gingi-val is more effective, good effect, high aesthetic degree and quick recovery, so it can be widely recom-mended in clinic. Reference | Related Articles | Metrics Select Analysis of factors related to early failure after implant implantation HUANG Lijuan, MU Yandong, QING Wei, et al Chinese Journal of Oral Implantology    2018, 23 (3): 131-135.   DOI: 10.12337/zgkqzzxzz.2018.09.008 Abstract （184）      PDF （528KB）（263）       Knowledge map    Save Objective: To analyze the factors related to the failure of implants in the department of stomatology in the past five years. Methods: A total of 392 cases were implanted in the Department of Oral Implantol-ogy of People's Hospital of Sichuan Province from January 2013 to December 2017. A total of 392 men were enrolled in this study, 212 of whom were males and 180 were females. A total of 598 implants were implanted. There were 116 Dentiums, 170 American Biohorizons, and 312 Straumanns from Switzerland. Table analysis was performed. Chi-square test was used to analyze the early failure of the implants in terms of gender, different implant systems, different bone augmentation procedures, different implant sites, and implant size. The relevant factors of the rate. Results: According to the analysis of case data, there were 8 cases of early failure within 5 years and 10 implants. The early failure rate of implants was 1.67%. In terms of gender, the early failure rate after implantation was not statistically significant(p>0.05), there was no significant difference in early failure rate between different implant systems(p>0.05), the ear-ly failure of maxillary sinus extraction and bone grafting. The rate was highest, but it was not statistically significant compared to other bone augmentation surgeries. The number of implanted mandibular anterior teeth was the lowest but the early failure rate was higher than other sites and statistically significant (p< 0.05), fine implants (Diameter≤3.8mm), the early failure rate of short implants(length≤10mm) was signifi-cantly higher than other types of implants, and there was a statistically significant(p<0.05). Conclusions: The early failure rate of implants in the anterior mandibular area, narrow implants and short implant placements are much higher. Reference | Related Articles | Metrics Select Application effect and prognosis of bone graft and tissue engineering scaffold materials in maxillary sinus lifting oral implant restoration JIANG Jian Chinese Journal of Oral Implantology    2018, 23 (3): 136-138.   DOI: 10.12337/zgkqzzxzz.2018.09.009 Abstract （179）      PDF （499KB）（290）       Knowledge map    Save Objective: To investigate the application effect and prognosis of bone graft and tissue engineering scaffold in maxillary sinus lifting oral implant restoration. Methods: Thirty patients with maxillary sinus and oral implants were selected. All of them were treated from May 2016 to May 2017. Bio-Oss collagen was applied as a scaffold for bone grafting and tissue engineering. The effect and prognosis were observed. Results: A total of 30 patients were selected in this study. A total of 34 threaded column implants were implanted. There was no infection and damage of the maxillary sinus mucosa and gingival mucosa. After 6 months of follow-up, X-ray examination and artificial bone fusion of the alveolar bone were ideal, and the implant was effectively combined with the surrounding bone. After an average of 24 months of follow-up, the denture can play a normal role. Conclusion: For patients with clinically treated maxillary sinus eleva-tion for oral implant restoration, Bio-Oss collagen is applied as a bone graft and tissue engineering scaf-fold material. The implant bone combination is ideal, which can avoid loosening and falling off. Satisfacto-ry repair results provide a strong guarantee. Reference | Related Articles | Metrics Select Comparison of implant denture and fixed denture in oral restoratipn CHEN Yu Chinese Journal of Oral Implantology    2018, 23 (3): 139-141.   DOI: 10.12337/zgkqzzxzz.2018.09.010 Abstract （175）      PDF （508KB）（316）       Knowledge map    Save Objective: To apply implant denture in the process of oral repair and analyze the value of clinical application. Methods: Select our hospital 128 cases of patients with the need for oral cavity repair as the research object, the selected time period from 2011 to 2011, using the method of retrospective type, ac-cording to different patients to choose way of repair were divided into control group (n=64) and planting group(n=64), control group patients with conventional fixed denture, planting planting denture group of pa-tients, to evaluate the repair effect of two groups of patients. Results: There was no significant difference in BI score between the two groups before treatment, and there was no statistical significance, P>0.05. Af-ter repair, the BI score of the implant group was significantly lower than that of the control group, and the advantage was obvious, P<0.05. The functional recovery time of the implant group was (5.01 + 1.14) months, significantly longer than that of the control group, P<0.05. The total effective rate of patients in both the implant group and the control group was higher than 90.00%, and there was no significant differ-ence, P>0.05. The patients in the implant group were 96.88% satisfied with the repair effect, which was significantly higher than the control group's 79.69%, P<0.05. Conclusion: Implantable denture repair can achieve similar results to fixed denture repair in oral repair, and it will not cause damage to healthy teeth. The satisfaction of patients is higher. Reference | Related Articles | Metrics Select Statistical analysis of 973 cases (2224 domestic implant prostheses) WANG Guang, REN Daopu, HE Lu, et al Chinese Journal of Oral Implantology    2018, 23 (3): 142-146.   DOI: 10.12337/zgkqzzxzz.2018.09.011 Abstract （156）      PDF （828KB）（271）       Knowledge map    Save Objective: To preliminarily evaluate the clinical effects of two kinds of domestic systems and meth-ods for bony union implant denture. Methods: From January 2003 to March 2014, 2224 homemade bonebonded implants were implanted in our department. They were 832 HBIC implants developed by Hebei Medical University and 1392 CDIC implants developed by the China dental implantology center(West Chi-na Medical University). Repair design: 938 cases of fixed repair, 35 cases of active repair, a total of 973 patients(including jaw defect repair and reconstruction cases). The longest implantation time was 134 months, the shortest implantation time was 52 months, and the average implantation time was 93 months. The methods of observation were X-ray examination and clinical examination. Results: 29 of the implants were loosened before the upper structure was restored, 52 were loosened after the upper structure was re-stored, and 2142 were retained. Conclusion: The 134 month survival rate of domestic implant is 96.31%. Reference | Related Articles | Metrics Select Minimally invasive immediate implant restoration in maxillary aesthetic zone with multiple teeth loss: case report DONG Xin, WANG Lijun, YANG Xiaodong Chinese Journal of Oral Implantology    2018, 23 (3): 147-150.   DOI: 10.12337/zgkqzzxzz.2018.09.012 Abstract （150）      PDF （660KB）（276）       Knowledge map    Save Objective: This study is aimed to investigate the clinical effect of minimally invasive immediate im-plant restoration in maxillary aesthetic zone with multiple teeth loss. Methods: This study did the immedi-ate implant surgery with bone expansion and bone augmentation technique in a minimally invasive flap-less way using 2 Nobel-Replace bone level implants. And the permanent restoration was performed 6 months after the implant surgery. The synosteosis and periprosthetic soft tissue were observed 3, 30, 72 months later. Results: The synosteosis was well formed and the impants were stable after long-term load-ed. And the periprosthetic soft tissue had healthy pink aesthetics and proper white aesthetics. The treat-ment effect was beyond expectation and the patient left with great satisfaction. Conclusion: The minimal-ly invasive immediate implant restoration can meet both the functional and aesthetic demand of the pa-tients with multiple teeth loss in maxillary aesthetic zone which is significant in clinical therapy to some degree. Reference | Related Articles | Metrics Select Chinese Journal of Oral Implantology    2018, 23 (3): 151-154.   DOI: 10.12337/zgkqzzxzz.2018.09.013 Abstract （126）      PDF （481KB）（362）       Knowledge map    Save Reference | Related Articles | Metrics Select Effects of platelet-rich fibrin(PRF)on periodontal ligament healing in dislocation replantation WANG Deli, LIN Yangyang, XI Yuli, et al Chinese Journal of Oral Implantology    2018, 23 (4): 155-159.   DOI: 10.12337/zgkqzzxzz.2018.12.001 Abstract （141）      PDF （622KB）（334）       Knowledge map    Save Objective: To investigate the effect of platelet-rich fibrin(PRF)on promoting periodontal healing by replantation of canine dislocation. Methods: 10 adult mongrel dogs were selected and the upper and low-er anterior teeth were pulled out at intervals. Whole blood was extracted from jugular vein to prepare PRF and PRP. The dislocated teeth were randomly divided into groups according to 30min, 1h and 2h after dry placement in vitro. The infected teeth in each group were replanted with PRF, PRP or without any graft, and immediate replantation was used as the control group. Histological observation was used to evaluate the periodontal healing in each group. Results: The first group presented normal periodontal membrane structure. No inflammatory changes and inflammatory absorption, no inflammatory changes and inflamma-tory absorption occurred in groups 3 and 4, and the difference in normal periodontal membrane and sur-face absorption was not statistically significant(P>0.05). The periodontal membrane structure of the fourth group and the seventh group had relatively dense collagen fiber structure and strong directivity. There was no significant difference in normal periodontal membrane between the fourth group and the seventh group and the first group(P>0.05). Normal periodontal membrane of the 7th group was higher than that of the 6th group, while surface absorption was lower than that of the 6th group, and the difference was statistically significant(P<0.05). There was no significant difference in surface absorption between the 9th group and the 10th group(P>0.05), but surface absorption was mostly repaired and static. Conclusion: The effect of PRF on periodontal healing was more obvious than that of the group without grafting and the group using PRP. After 2h of dislocation, PRF/PRP was difficult to promote periodontal healing. Reference | Related Articles | Metrics Select The CBCT study of lingual concavity in the mandibular posterior region LI Zhi, DONG Qiang, LI Ying, et al Chinese Journal of Oral Implantology    2018, 23 (4): 160-163.   DOI: 10.12337/zgkqzzxzz.2018.12.002 Abstract （218）      PDF （547KB）（476）       Knowledge map    Save Objective: This study took use of CBCT(Cone Beam Computed Tomography) to measure and to ana-lyze the lingual concavity of the mandibular posterior region. When implanted in the mandibular posterior region, it provided some certain imaging references to preoperative diagnosis design and effective avoid-ance of concavity. Methods: According to the inclusion and discharge criteria, 318 of CBCT raw datas were there for measurement, upon which statistical analysis was performed through SPSS 22.0 statistical software package. Results: 1. The incidence of concavity was statistically different from age and tooth po-sition. 2. The indentations of different tooth positions were statistically different in the ABC area for differ-ent teeth. 3. There were statistical differences among three groups of measurements from different tooth positions. 4. The three groups of measurements in the ABC area were statistically different. Conclusion: This study suggested that when large concavity occurred in the AB region, the chance of lingual perfora-tion increased. Another finding of this study was that in the position of the second premolar of the lower jaw, sometimes there was a large undercut on the lingual side, and simultaneously an undercut on the buc-cal bone wall would be there, the rigorous design before surgery was especially important together with the presence of the buccal pupil. Reference | Related Articles | Metrics Select Evaluation of the effect of minimally invasive oral implantation on alveolar ridge crest absorption ZOU Ziying Chinese Journal of Oral Implantology    2018, 23 (4): 164-166.   DOI: 10.12337/zgkqzzxzz.2018.12.003 Abstract （187）      PDF （512KB）（309）       Knowledge map    Save Objective: To investigate the clinical effect of minimally invasive non-flap implantation and tradi-tional flap implantation on alveolar ridge parietal bone resorption in patients with loss of teeth with good bone mass. Methods: 120 edentulous patients who underwent dental implantation in our hospital from January 2016 to June 2017 were randomly divided into control group and observation group, 60 cases in each group. Patients in the control group were treated with traditional flap implantation, while patients in the observation group were treated with minimally invasive non-flap implantation. Results: The success rate of planting was 96.67% in the observation group, significantly higher than 85.00% in the control group (P<0.05). The incidence of adverse events in the observation group was 1.67%, significantly lower than 11.67% in the control group(P<0.05). The PES score and implant stability coefficient in the observa-tion group were significantly higher than those in the control group(P<0.05). The absorbance of alveolar ridge parietal bone in the observation group was significantly lower than that in the control group at 6 and 12 months after operation(P<0.05). Conclusion: Minimally invasive non-flap implantation has high suc-cess rate, good stability, low alveolar ridge parietal bone resorption, and can alleviate the complications and pain. Reference | Related Articles | Metrics page Page 1 of 2 Total 49 records First page Prev page Next page Last page