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Influence factors of achieving predictable maxillary sinus bone augmentation Zhao Yang Chinese Journal of Oral Implantology    2024, 29 (3): 289-294.   DOI: 10.12337/zgkqzzxzz.2024.06.016 Abstract （1792）      PDF （1348KB）（1348）       Knowledge map    Save Maxillary sinus floor elevation is a common surgical method to solve the problem of insufficient bone mass in the posterior maxillary region. Based on the special background of maxillary sinus bone augmentation, we explore the principles of achieving predictable maxillary sinus bone augmentation results from the mechanism of osteogenesis, which can be considered from four aspects: bone contact area, angiogenesis, stability of space, and safe healing. Reference | Related Articles | Metrics

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Recent advances in the factors affecting the pathogenesis, diagnosis, and treatment of peri-implantitis Yan Fuhua, Song Shiyuan Chinese Journal of Oral Implantology    2023, 28 (6): 402-409.   DOI: 10.12337/zgkqzzxzz.2023.12.003 Abstract （996）      PDF （1334KB）（1244）       Knowledge map    Save Oral implant therapy is one of the most common methods for restoring defective and missing dentition. Peri-implantitis is a prevalent biological complication of implant therapy, characterized by inflammation of the peri-implant mucosa and subsequent progressive loss of supporting bone. The occurrence of peri-implantitis can impact the prognosis of implant restorations or even lead to implant failure, significantly affecting the patient's health and quality of life. Therefore, reducing the risk factors of peri-implantitis, timely diagnosis and effective treatments are of great importance to enhance the prognosis of implant therapy. This review describes the factors influencing the pathogenesis of peri-implantitis, the current diagnostic criteria, and therapeutic methods. Furthermore, it discusses emerging treatment modalities with potential clinical applications and reviews ongoing research progress. Reference | Related Articles | Metrics

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Expert consensus on titanium mesh supported guided bone regeneration Editorial Board of Chinese Journal of Oral Implantology Chinese Journal of Oral Implantology    2024, 29 (2): 95-100.   DOI: 10.12337/zgkqzzxzz.2024.04.001 Abstract （420）      PDF （1401KB）（751）       Knowledge map    Save Nowadays, the clinical application of titanium mesh supported guided bone regeneration (TMs-GBR), especially using 3D printing individualized titanium mesh (3D-PITM), is increasing, serving as a reliable solution for bone augmentation in various cases of bone defects, particularly complex ones encountered during implant surgery. Given the technical sensitivity of TMs-GBR and the higher risk of complications such as titanium mesh exposure, as well as the current lack of relevant guidelines or international consensus, the editorial board of the Chinese Journal of Oral Implantology organized discussions among relevant experts and drafted this consensus, aiming to provide clinical reference for practitioners. Reference | Related Articles | Metrics

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Expert consensus on sinus floor elevation with maxillary sinus cyst or cyst-like lesions Chinese Society of Oral Implantology Chinese Journal of Oral Implantology    2024, 29 (3): 195-201.   DOI: 10.12337/zgkqzzxzz.2024.06.001 Abstract （306）      PDF （1090KB）（593）       Knowledge map    Save Sinus floor elevation is a predictable rehabilitation method commonly used to address bone deficiency in the maxillary posterior area. However, the presence of maxillary sinus cysts often presents a challenge for sinus floor elevation. At present, there is still a lack of guidelines or consensus on sinus floor elevation with maxillary sinus cyst. The purpose of this consensus is to provide clinicians with practical and feasible measures for sinus floor elevation with maxillary sinus cysts. Reference | Related Articles | Metrics

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Treatment decision-making and prognosis assessment of peri-implantitis Xu Shulan, Zhu Yuanxi Chinese Journal of Oral Implantology    2023, 28 (6): 394-401.   DOI: 10.12337/zgkqzzxzz.2023.12.002 Abstract （274）      PDF （1706KB）（880）       Knowledge map    Save Peri-implantitis is a common biological complication of dental implant treatment, and it is one of the significant causes of implant failure as well. The treatment decision-making and prognosis assessment of peri-implantitis present two major problems for implantologists in clinical practice. Evidence-based treatment decision-making and accurate prognosis assessment could help doctors propose appropriate treatment approaches and guide patients to conduct oral self-care and systemic factors control according to their own conditions, aiming for more a streamlined treatment process and better clinical outcomes. This literature review provides a comprehensive overview of the treatment decision-making and prognosis assessment of peri-implantitis, discusses its research progress and clinical recommendations, and puts forth suggestions for further research. Reference | Related Articles | Metrics

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Current status and progress of clinical application of oral occlusion Chen Jiang, He Kaixun Chinese Journal of Oral Implantology    2024, 29 (1): 3-8.   DOI: 10.12337/zgkqzzxzz.2024.02.002 Abstract （262）      PDF （1322KB）（457）       Knowledge map    Save Oral occlusion involves tooth position, temporomandibular joint movement, and muscle function. Normal oral occlusion is crucial for chewing, pronunciation, facial expressions, and other functions. Malocclusion can cause a series of complications, including pain in the temporomandibular joint and chipping of restorations. Therefore, the importance of oral occlusion in the field of oral medicine has become increasingly prominent. Through in-depth research on oral occlusion, dentists can better diagnose and treat occlusion-related problems and improve treatment effects and patients' quality of life. This article intends to introduce the current status and future directions of oral occlusion research and guide the application and development of implant occlusion. Reference | Related Articles | Metrics

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Expert consensus on maxillary sinus floor elevation: maxillary sinus septum Chinese Society of Oral Implantology Chinese Journal of Oral Implantology    2024, 29 (2): 103-108.   DOI: 10.12337/zgkqzzxzz.2024.04.003 Abstract （241）      PDF （1040KB）（634）       Knowledge map    Save The maxillary sinus septum is a common bony structure in the maxillary sinus. It is very important to understand the presence of the maxillary sinus septum when designing the sinus floor elevation. Therefore, this paper summarizes the classification of maxillary sinus septum, its anatomical and biological characteristics, its influence on maxillary sinus osteogenesis, and its treatment methods and principles, in order to provide a reference for the clinical implementation of sinus floor elevation with maxillary sinus septum, and to reduce the complications caused by the presence of maxillary sinus septum. Reference | Related Articles | Metrics

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Finite element analysis of the effect of different occlusal characteristics on the biomechanical behavior of posterior implant-supported single crown Yang Feng, Wang Mengya, Yin Wenjie, Zhang Zheng, Chen Jiang Chinese Journal of Oral Implantology    2024, 29 (1): 16-23.   DOI: 10.12337/zgkqzzxzz.2024.02.004 Abstract （217）      PDF （1667KB）（196）       Knowledge map    Save Objective The purpose of this study is to investigate the effect of occlusal characteristics on the biomechanical behavior of the implant-bone interface of a posterior implant-supported single crown under immediate loading, using finite element analysis. This aims to provide reference for the selection of clinical occlusal characteristics. Methods The finite element model of an implant-supported crown with immediate loading and surrounding bone was constructed using the interference fit method. Six different occlusal characteristics were designed according to natural teeth. Ansys Workbench 2021 R2 software was used to analyze the axial static loading of 200 N. All the data were evaluated using the comparative analysis method to assess the impact of different occlusal characteristics on implant-bone interface displacement and Von Mises stress. Results A-B-C occlusal contact produced the smallest displacement of the implant and surrounding cortical and cancellous bone (10.52 μm, 5.67 μm, 9.34 μm), while prosthodontic platform occlusal (3 points) contact produced the largest displacement of the implant, cortical bone, and cancellous bone (15.24μm, 8.94μm, 12.15 μm). Compared with other occlusal contact types, A-B occlusal contact produced the largest Von Mises stress in the implant (71.91 MPa), significantly reduced the maximum Von Mises stress in cortical bone and had the largest maximum Von Mises stress in cancellous bone ( 18.04 MPa, 17.81 MPa). Conclusion Different occlusal characteristics significantly affect the displacement and Von Mises stress distribution at the implant-bone interface under immediate loading, and also change the stress concentration sites. A-B-C occlusal contact is beneficial in reducing the Von Mises stress on the implant and surrounding bone tissues, while A-B occlusal design has a slight advantage in the axial transmission of occlusal force. Reference | Related Articles | Metrics

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Clinical effects of osseodensification technique for transalveolar sinus floor elevation Wang Kexin, Ji Ping, Li Dize, Chen Yuan, Zhao Hongyong, Lu Qinyi, Bai Yaxin, Chen Tao Chinese Journal of Oral Implantology    2024, 29 (1): 62-69.   DOI: 10.12337/zgkqzzxzz.2024.02.011 Abstract （217）      PDF （1660KB）（250）       Knowledge map    Save Objective To investigate the clinical effects of the osseodensification technique applied to transalveolar maxillary sinus floor elevation with simultaneous implant placement. Methods A total of 39 patients underwent transalveolar sinus floor elevation using osseodensification and implant placement in the Department of Implantology, Stomatological Hospital of Chongqing Medical University from May 2022 to May 2023. 21 cases were female, and 18 cases were male, with ages ranging from 21 to 73 years old and an average of (51.67±11.68) years old. Definitive prosthesis was delivered 6 months after implant surgery. Cone-beam computed tomography (CBCT) was conducted preoperatively (T0), postoperatively (T1), and at 6-month follow-up (T2), measuring residual bone height (RBH), vertical bone height (VBH), and bone density (BD) at the implant site. Implant stability test (IST), sinus membrane perforation rate, and implant survival rate (SR) were recorded and analyzed 6 months after implant surgery. Results A total of 39 patients underwent maxillary sinus floor elevation surgery with 53 implants placed simultaneously. Alveolar bone heights ranged from 3.38 to 9.40 mm at T0, with a mean of (6.16±1.00) mm, (11.25±1.10) mm at T1, and (10.36±0.99) mm at T2. Significant differences in alveolar bone height were observed among different observation points ( P <0.001). The BDT0, BDT1 and BDT2 were 196.65 Hu, 441.70 Hu, and 435.04Hu respectively. Significant differences in bone density between T0 and T1 ( P<0.0001) were found. The sinus membrane perforation rate was 1.89%. 2 implants were lost in 6 months after surgery, yielding a cumulative implant survival rate of 96.23%. The remaining implants exhibited favorable IST values 77.61±4.78 at 6 months post-surgery, and no peri-implant inflammation was observed during the follow-up period. Conclusion The osseodensification technique may achieve optimal clinical effects for transalveolar sinus floor elevation. The technique exhibits acceptable short-term outcomes, while further studies on long-term clinical effects are required. Reference | Related Articles | Metrics

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Risks and countermeasures of dental implant treatment in osteoporosis patients Liu Zhonghao, Dong Kai Chinese Journal of Oral Implantology    2024, 29 (4): 303-310.   DOI: 10.12337/zgkqzzxzz.2024.08.003 Abstract （211）      PDF （1557KB）（309）       Knowledge map    Save Osteoporosis (OP) is a systemic skeletal disease with the main characteristic of reduction of bone density and low bone mass. With the increasing age of the population, the incidence of OP increases year by year. Replacement of missing teeth with dental implants is one of the most common treatment options with a high success rate. However, in patients with OP, deterioration of bone tissue may lead to an increased risk of implant failure. Although OP is not a contraindication for implant therapy, clinicians should still pay great attention to associated risk factors. This article discusses the alveolar bone modeling and remodeling, the success rates of dental implants, the influence of anti-osteoporosis drugs, and the strategy of dental implant treatment in OP patients for clinical reference. Reference | Related Articles | Metrics

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Implant restorations and occlusal reconstruction in partially edentulous patients aided by digital technology: a basic restorative procedure Yan Yuwei, Lin Xiao, Ma Rui, Liang Chao, Geng Wei Chinese Journal of Oral Implantology    2024, 29 (1): 30-35.   DOI: 10.12337/zgkqzzxzz.2024.02.006 Abstract （207）      PDF （2541KB）（304）       Knowledge map    Save Occlusal reconstruction is a complex oral treatment procedure that requires a high degree of treatment accuracy, especially when it involves occlusal reconstruction treatment of implant-supported fixed restorations. The assistance of digital technology is conducive to improving the accuracy of treatment and providing long-term stability for patients of implant restorations and occlusal reconstruction. The purpose of this article is to discuss the basic restorative procedures of implant restorations and occlusal reconstruction in partially edentulous patients assisted by the digital technology of the neuromuscular analysis system and the electronic facebow for clinical reference. Reference | Related Articles | Metrics

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Evaluation of the clinical effects of Er, Cr: YSGG laser in the treatment of peri-implantitis Sun Fei, Wang Cui, Hu Wenjie Chinese Journal of Oral Implantology    2023, 28 (6): 417-423.   DOI: 10.12337/zgkqzzxzz.2023.12.005 Abstract （206）      PDF （1568KB）（267）       Knowledge map    Save Objective To evaluate changes in clinical parameters using Er, Cr: YSGG laser compared to submucosal debridement for the non-surgical treatment of early peri-implantitis. Methods Twenty-eight patients and 28 implants with early peri-implantitis were recruited. The patients were randomly divided into a test group and a control group. The test group (14 subjects/14 implants) was treated with Er, Cr: YSGG laser, and the control group (14 subjects/14 implants) received mechanical submucosal debridement using a titanium curettage and chlorhexidine irrigation. Clinical parameters, such as modified plaque index (mPI), peri-implant pocket probing depth (PD), and bleeding index (BI), were measured at baseline, 2 months, and 3 months after treatment. Differences in clinical parameters before and after treatment were compared. Results The mPI, PD and BI of both the test group and control group significantly reduced at 2 and 3 months after non-surgical intervention (P<0.05). Compared to the control group, the test group significantly achieved a reduction in BI value at 2 and 3 months after treatment (1.67 ± 0.45 vs. 2.40 ± 0.55, P=0.001; 1.07 ± 0.38 vs. 2.09 ± 0.83, P<0.001). Both the control and test group exhibited comparable mPI and PD reductions ( P>0.05). The treatment success rates were 28.6% and 7.1% at the patient level ( P=0.037) and 70.2% and 48.8% at the site level ( P=0.012), respectively. Conclusion Er, Cr: YSGG laser for the treatment of early peri-implantitis may be used as an alternative to hand instrumentation to reduce soft tissue inflammation. Reference | Related Articles | Metrics

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Research progress on digital methods for recording and transferring maxillomandibular relationship Man Yi, Lan Dongping Chinese Journal of Oral Implantology    2024, 29 (3): 212-217.   DOI: 10.12337/zgkqzzxzz.2024.06.004 Abstract （198）      PDF （1472KB）（391）       Knowledge map    Save In recent years, the advancing development of digital dental technology has heralded a new era in full-arch implant restoration. A crucial element for successful complete denture is the accurate recording and transfer of the maxillomandibular relationship. Compared to traditional methods, digital technology has the potential to shorten the treatment cycle and improve the efficiency of diagnosis and treatment. This article elaborates on the application and advances of digital technology in recording and transferring the maxillomandibular relationship in edentulous patients. The opportunities and challenges presented by the digitization of dental technology to clinicians will be discussed, with the aim of providing them with a valuable reference. Reference | Related Articles | Metrics

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"Improved" maxillary sinus lift surgery Sun Xiaolin, Luo Jiaxin Chinese Journal of Oral Implantology    2024, 29 (2): 118-126.   DOI: 10.12337/zgkqzzxzz.2024.04.005 Abstract （193）      PDF （1637KB）（361）       Knowledge map    Save When posterior maxillary teeth are missing, the residual bone height required for implantation is insufficient due to the lack of functional stimulation from the teeth and pneumatization of the maxillary sinus. When residual bone volume cannot ensure the initial stability of the implant, a maxillary sinus floor elevation is needed to increase bone volume in the posterior maxillary region. The "PESS" procedure is a "modified" maxillary sinus floor elevation surgery that uses platelet-rich fibrin (PRF) as a single bone graft material, with the aid of an endoscope to elevate the maxillary sinus floor through the alveolar ridge and place implants simultaneously. The PESS procedure has optimized maxillary sinus floor elevation surgery to some extent and reduced surgical trauma. This article elaborates on the principles, indications, clinical procedures, and precautions of the "PESS" procedure to provide technical support for its clinical application. Reference | Related Articles | Metrics

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Determination of the occlusal plane in the computer-assisted design of implant-supported fixed complete-arch rehabilitation Ye Ying, Liu Weicai Chinese Journal of Oral Implantology    2024, 29 (1): 9-15.   DOI: 10.12337/zgkqzzxzz.2024.02.003 Abstract （190）      PDF （1569KB）（393）       Knowledge map    Save Various digital techniques have been extensively applied in implant dentistry. When addressing edentulous cases with implant-supported fixed complete-arch rehabilitation, the determination of the occlusal plane is a critical step, which is a prerequisite for achieving stable occlusal function. This review discusses the employed digital techniques and data fusion, the techniques of virtual mounting, and various methods applied in occlusal plane determination. We hope this work could provide valuable insights into the clinical work in implant-supported occlusal rehabilitation. Reference | Related Articles | Metrics

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Comparison of the clinical effects of two different wound closure methods in extraction site preservation of maxillary molars Liu Zongyi, Zhang Qingbin, Ye Zhanchao, Yu Changying, Liu Wanqing Chinese Journal of Oral Implantology    2024, 29 (1): 49-55.   DOI: 10.12337/zgkqzzxzz.2024.02.009 Abstract （183）      PDF （1608KB）（279）       Knowledge map    Save Objective To assess the clinical effects of concentrated growth factor (CGF) and free gingival grafting (FGG) in combination with Bio-Oss Collagen in extraction site preservation after maxillary molar extraction. Methods Thirty patients were randomly divided into two groups. The tooth sockets were filled with Bio-Oss Collagen, and then the wounds were closed using either CGF or FGG. Postoperative wound healing and the width of keratinized gingival tissue were observed, while CBCT was used to evaluate the changes in the alveolar bone and maxillary sinus floor. Results Group B exhibited a higher rate of wound healing compared to group A ( P<0.05). The width of keratinized gingival decreased by (0.79±0.16) mm in group A and (0.35±0.18) mm in group B, respectively ( P<0.05). There was no significant difference between the two groups regarding changes in alveolar bone or maxillary sinus floor ( P>0.05). Conclusion Both CGF and FGG combined with Bio-Oss Collagen effectively reduced bone resorption during ridge preservation after maxillary molar extraction, with no significant differences observed in alveolar bone or maxillary sinus floor changes between the two groups. However, FGG demonstrated better wound healing rates and less reduction of buccal keratinized gingival compared to CGF. Reference | Related Articles | Metrics

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Impact of implant restorative abutment emergence taper changes on gingival attachment Xu Xinxin, Wang Xinyu, Han Zekui, Zhang Liang, Gao Shijun Chinese Journal of Oral Implantology    2024, 29 (1): 36-41.   DOI: 10.12337/zgkqzzxzz.2024.02.007 Abstract （181）      PDF （1552KB）（303）       Knowledge map    Save Objective To assess the impact of different tapers and materials of abutments on peri-implant soft tissue attachment in vivo, and to select the best abutment taper. Methods Ti6Al4V and zirconia abutments with different tapers were prepared using CAD/CAM technology. The abutments underwent surface treatment and were placed into the oral cavities of animals. The animals were executed four weeks after healing, and the gingival attachment to abutments with different materials and tapers was observed using HE staining and immunohistochemistry (IHC). Results Roughness Ti6Al4V Ra= 0.16 μm, zirconia Ra=0.34 μm. HE staining showed that there were more inflammatory cells in the 35° group than in the other groups, while there was no significant difference in the number and distribution of inflammatory cells in the 20°~ 30° groups, and the inflammation in zirconia group was more obvious than that in Ti6Al4V group. IHC staining demonstrated an immune response to laminin-5 at the interface between the abutment and the surrounding epithelium. The expression intensity reached its peak at 30° with the increase of the emergency taper. The expression in the zirconia group was weaker than that in the Ti6Al4V group. The MOD values (Mean Optical Density) of 20° to 40° were 0.27 ± 0.00, 0.29 ± 0.00, 0.35 ± 0.00, 0.24 ± 0.01 and 0.25 ± 0.01, respectively. The MOD values of Ti6Al4V and zirconia were 0.29 ± 0.00 and 0.20 ± 0.01, respectively. Conclusion The soft tissue attachment ability of the restorative abutment with 30° emergency taper was better, and the 3D-printed Ti6Al4V abutment was better than the digitally cut zirconia abutment. Reference | Related Articles | Metrics

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Implant treatment for patients with congenital tooth agenesis Wu Yiqun, Wang Feng Chinese Journal of Oral Implantology    2024, 29 (3): 204-211.   DOI: 10.12337/zgkqzzxzz.2024.06.003 Abstract （176）      PDF （2552KB）（247）       Knowledge map    Save Congenital tooth agenesis primarily manifests as an insufficient number of teeth, hypoplasia of the maxillary and mandibular alveolar processes, and maxillofacial dysplasia, all of which can result in oral or systemic dysfunction. Congenital tooth agenesis is harmful, and its treatment is challenging. Dental implants are an ideal option to restore missing teeth in these patients due to their good stability and comfort. This article aims to analyze the challenges associated with dental implants in the treatment of congenital tooth agenesis and propose strategies for the reconstruction of oral function in patients with congenital tooth agenesis. Reference | Related Articles | Metrics

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Advances in the clinical application of computer-assisted implant surgery Fu Shuang, Huang Bin, Feng Yi, Wang Haiyan, Sun Wei, Ji Wei, Shi Bin Chinese Journal of Oral Implantology    2024, 29 (1): 87-92.   DOI: 10.12337/zgkqzzxzz.2024.02.015 Abstract （168）      PDF （1295KB）（226）       Knowledge map    Save Computer-assisted technology has been applied in the field of implant surgery to improve the accuracy of implant placement and to achieve high success rate of implants and optimal aesthetic outcomes. There are two major types of computer-assisted implant surgery: static and dynamic computer-assisted implant surgery. Static computer-assisted implant surgery uses a surgical template to transfer the pre-designed implant position to patient while dynamic computer-assisted implant surgery guides implant placement using real-time tracking and navigation. With the rapid development of digital technology, computer-assisted implant surgery has been more and more widely used in clinical practice. In this paper, the clinical procedures of static and dynamic computer-assisted implant surgery are described. The accuracy of implant placement and factors influencing implant accuracy, clinical outcomes and patient-reported indicators of static and dynamic computer-assisted implant surgery are analyzed. Reference | Related Articles | Metrics

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Editorial Board of Chinese Journal of Oral Implantology Editorial Board of Chinese Journal of Oral Implantology Chinese Journal of Oral Implantology    2024, 29 (4): 295-296.   DOI: 10.12337/zgkqzzxzz.2024.08.001 Abstract （165）      PDF （1347KB）（247）       Knowledge map    Save Related Articles | Metrics

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Current research status of transalveolar technique for sinus floor elevation with simultaneous placement of dental implants Xia Haibin, Xu Junyi Chinese Journal of Oral Implantology    2024, 29 (2): 109-117.   DOI: 10.12337/zgkqzzxzz.2024.04.004 Abstract （165）      PDF （1604KB）（312）       Knowledge map    Save When the residual bone height is insufficient in the maxillary posterior region, the transalveolar technique for sinus floor elevation with simultaneous implant placement is less invasive, resulting in milder postoperative reactions and shorter treatment periods compared to the lateral window technique. However, due to the limited surgical vision and elevation technique, the transalveolar technique is susceptible to mucoperiosteal perforation or compromised osteogenesis and is therefore traditionally considered suitable only for cases where the residual bone height is mildly inadequate. With modifications to surgical instruments, improvements in clinical skills, and the assistance of digital technology, researchers have gained new insights into the indications and surgical protocols for transalveolar sinus floor elevation with simultaneous placement of dental implants. This paper presents an overview of the current basic and clinical research status of the transalveolar technique for sinus floor elevation with simultaneous implantation by reviewing recent literature. Reference | Related Articles | Metrics

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A case of infraocclusion after implant placement and restoration of upper left central incisor Liu Lupeng, Zhao Ge, Yang Yundong, Xiao Huijuan Chinese Journal of Oral Implantology    2024, 29 (1): 77-81.   DOI: 10.12337/zgkqzzxzz.2024.02.013 Abstract （162）      PDF （1622KB）（241）       Knowledge map    Save The objective is to discuss the occurrence of infraocclusion after implant restoration in patients with missing upper anterior teeth,analyze and discuss the causes and clinical management methods of such complications. The patient's upper left central incisor was injured, and the crown and root were fractured subgingivally and could not be preserved. The affected tooth was extracted in a minimally invasive surgery and replaced by flapless immediate implant placement and immediate restoration. After 7 months, the zirconia ceramic crown restoration was delivered. CBCT and periapical radiographs with paralleling technique showed good osseointegration, sufficient thickness of the labial bone plate, and stabilization of marginal bone level. During the 5-year follow-up after implant placement, it was found that the implant settled and presented an infraocclusal situation. Reference | Related Articles | Metrics

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Preface for the key column on implant-supported occlusal reconstruction Chinese Journal of Oral Implantology    2024, 29 (1): 1-2.   DOI: 10.12337/zgkqzzxzz.2024.02.001 Abstract （162）      PDF （1174KB）（241）       Knowledge map    Save Related Articles | Metrics

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Research progress on repair methods of maxillary sinus mucoperiosteum perforation in lateral window technique for sinus floor elevation Fu Daxi, Tang Zengbin, Zhu Yilin, Shi Zimai, Pan Xiaobo Chinese Journal of Oral Implantology    2024, 29 (4): 378-384.   DOI: 10.12337/zgkqzzxzz.2024.08.014 Abstract （162）      PDF （1588KB）（146）       Knowledge map    Save Maxillary posterior tooth loss can lead to resorption of the alveolar ridge and continuous pneumatization of the maxillary sinus, resulting in insufficient bone quantity in the maxillary posterior region. Maxillary sinus floor elevation is a technique for augmenting the maxillary posterior region. Maxillary sinus mucoperiosteum perforation is one of the most common complications in the lateral window technique for sinus floor elevation. How to repair the perforation and the effects of different repair methods vary. This article reviews the different repair methods for maxillary sinus mucoperiosteum perforation in the lateral window technique for sinus floor elevation, aiming to provide some reference for clinical practitioners. Reference | Related Articles | Metrics

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Application and research progress of digital technology in bone augmentation for dental implants Chen Jiang, Qiu Yubei Chinese Journal of Oral Implantology    2024, 29 (3): 252-257.   DOI: 10.12337/zgkqzzxzz.2024.06.010 Abstract （160）      PDF （1333KB）（171）       Knowledge map    Save Insufficient alveolar bone mass at the implant site is an important factor affecting the outcome of dental implants. Bone augmentation is an effective strategy to solve this problem. The application of digital technology provides a new approach for bone augmentation in oral implantology. This article presents the application and research progress of digital technology in bone augmentation for dental implants. Reference | Related Articles | Metrics

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Research progress on peri-implant soft tissue augmentation materials Chen Jiaxin, Gu Xinhua Chinese Journal of Oral Implantology    2024, 29 (3): 284-288.   DOI: 10.12337/zgkqzzxzz.2024.06.015 Abstract （158）      PDF （1341KB）（211）       Knowledge map    Save With the increasing maturity of dental implant technology, the aesthetic effects of dental implants and long-term health of surrounding tissues in implant restorations are of growing concern. Due to the decrease in the amount of soft and hard tissue around the missing tooth area, dental defects often fail to meet the requirements for implant restoration. Therefore, the augmentation of soft and hard tissue around the implant is a key step in dental implantation. The purpose of this paper is to introduce common peri-implant soft tissue augmentation materials and provide references to solving the problem of peri-implant soft tissue insufficiency. Reference | Related Articles | Metrics

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Clinical considerations of organ transplant patients receiving implant therapy Tang Yiman, Qiu Lixin Chinese Journal of Oral Implantology    2024, 29 (4): 297-302.   DOI: 10.12337/zgkqzzxzz.2024.08.002 Abstract （158）      PDF （1481KB）（168）       Knowledge map    Save Organ transplantation is an effective treatment for end-stage organ disease. Based on the increase in life expectancy, the demand for restoration of missing teeth in organ transplant patients has gradually increased. Dental implants have become the preferred treatment of choice for restoring missing teeth. Although dental implants have high success rates in healthy adults, the risk of implant therapy is correspondingly increased in organ transplant patients with previous systemic diseases and immunosuppressive therapy. In this article, we describe the particularity and success of oral implant therapy in organ transplant patients, and further discuss how to conduct a comprehensive assessment when performing implant therapy in organ transplant patients. Besides, we also discuss how to develop an individualized treatment plan to prevent possible risks and complications, in order to provide clinical references for the implementation of safe and effective implant therapy for organ transplant patients. Reference | Related Articles | Metrics

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Advances of yttrium-containing zirconia materials in dental clinical applications Xie Hailin, Guo Xueqi, Wang Liping Chinese Journal of Oral Implantology    2024, 29 (2): 184-189.   DOI: 10.12337/zgkqzzxzz.2024.04.014 Abstract （156）      PDF （1344KB）（217）       Knowledge map    Save Yttrium-containing zirconia ceramic (YCZC) has been widely used in field of implant and restorative dentistry. It has good mechanical and biological properties when compared with other types of zirconia ceramics. Different types of zirconia ceramics have been used in clinical application, such as Yttrium-stabilized tetragonal zirconia polycrystal (Y-TZP)with high mechanical properties, and Yttrium-partially stabilized zirconia (Y-PSZ)with high aesthetic properties. Therefore, understanding the physical and chemical properties of different YCZC can improve the clinical success of dental restorations. This article summarizes the available literature concerning the physical and chemical properties of YCZC and their clinical applications in the field of dentistry. Reference | Related Articles | Metrics

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Application of deep learning-assisted anatomical structure segmentation based on CBCT in implant dentistry Gao Qiancheng, Li Xindong, Cao Mingguo, Liu Yunfeng Chinese Journal of Oral Implantology    2024, 29 (1): 82-86.   DOI: 10.12337/zgkqzzxzz.2024.02.014 Abstract （156）      PDF （1333KB）（269）       Knowledge map    Save Compared with manual segmentation and traditional algorithm segmentation, the application of deep learning for oral anatomical structure segmentation can obtain accurate and consistent segmentation results efficiently. This approach can quickly obtain the anatomical structure information of the surgical areas to design implant surgery and restoration. This review provides an overview of the progress in CBCT-based deep learning for anatomical structure segmentation in the field of implant dentistry. Reference | Related Articles | Metrics

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Analysis of factors related to complications of transalveolar technique for sinus floor elevation Qian Yuxin, Wu Wei, Zhou Yongmiao, Wang Mingxi, Tang Chunbo Chinese Journal of Oral Implantology    2024, 29 (2): 138-143.   DOI: 10.12337/zgkqzzxzz.2024.04.008 Abstract （151）      PDF （1371KB）（223）       Knowledge map    Save In cases of insufficient bone in the maxillary posterior region, the transalveolar technique is a common, safe, and effective method to increase the amount of bone required for implantation. However, this technique may also lead to various intraoperative and postoperative complications. Clinicians need to pay attention to various risk factors to minimize the incidence of complications. The purpose of this article is to discuss the risk factors associated with complications of internal sinus floor elevation, which are categorized into intraoperative and postoperative complications. The most common intraoperative complications are perforations of the sinus floor mucosa and ectopic insertions of implants into the sinus. Postoperative complications, such as maxillary sinus infection and postoperative maxillary sinusitis, displacement of implants after surgery, and benign paroxysmal positional vertigo (BPPV), deserve more attention. Given these complications, this article provides a detailed description of the risk factors, hoping to help clinical doctors in using the internal sinus floor elevation more safely and effectively in the clinic. Reference | Related Articles | Metrics

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Current status of virtual patient construction in implant dentistry Chen Jinyan, Zhang Yun, Wu Yiqun, Wang Feng Chinese Journal of Oral Implantology    2023, 28 (6): 473-477.   DOI: 10.12337/zgkqzzxzz.2023.12.013 Abstract （145）      PDF （1380KB）（218）       Knowledge map    Save With the application of digital technology in dentistry, the construction of virtual patients can integrate multi-source digital information of patients to assist dentists in diagnosis and treatment planning, which has good prospects in dental implant therapy. The article discusses the acquisition of multi-source three-dimensional images and dynamic information, the construction of virtual patients as well as their application in the field of implant dentistry. Reference | Related Articles | Metrics

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Preface for the key column on peri-implantitis Chinese Journal of Oral Implantology    2023, 28 (6): 392-393.   DOI: 10.12337/zgkqzzxzz.2023.12.001 Abstract （144）      PDF （1131KB）（306）       Knowledge map    Save Related Articles | Metrics

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Impact of osteoporosis on dental implantation and related clinical considerations Qiu Yun, Wang Yulan, Zhang Yufeng Chinese Journal of Oral Implantology    2024, 29 (4): 336-341.   DOI: 10.12337/zgkqzzxzz.2024.08.007 Abstract （144）      PDF （1397KB）（267）       Knowledge map    Save With the development of dental technology, dental implants are gradually becoming the primary choice for restoring missing teeth. The quality and quantity of the alveolar bone are key to the success of implant surgery and the long-term retention of the implants. Osteoporosis is a systemic disease characterized by a decrease in bone mass and a reduction in bone density, affecting bones throughout the body, including the alveolar bone. Therefore, its characteristic oral manifestations can be indicative of an early diagnosis of osteoporosis. At the same time, the changes in bone density and bone structure in osteoporosis patients necessitate awareness of the treatment risks during implantation and modification of the treatment plan to improve the success rate of implant treatment. This article reviews the oral manifestations of osteoporosis, the risks of implant treatment, and the consideration for implant treatment through a literature review. Reference | Related Articles | Metrics

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Study on the preparation and antibacterial properties of polytetrafluoroethylene film modified customized titanium mesh Yang Bo, Han Zekui, Dai Haoran, Zhang Liang, Zang Yixin, Wang Xinyu, Su Yucheng Chinese Journal of Oral Implantology    2023, 28 (6): 451-459.   DOI: 10.12337/zgkqzzxzz.2023.12.010 Abstract （141）      PDF （2768KB）（168）       Knowledge map    Save Objective By preparing polytetrafluoroethylene film on the surface of customized titanium mesh, the biocompatibility and antibacterial ability of the surface of customized titanium mesh were improved. Methods The surface of the customized titanium mesh was sandblasted to roughen the surface by alumina and air-sprayed with PTFE dispersion. The polytetrafluoroethylene film modified customized titanium mesh (PMTM) was obtained by sintering and heat curing. The experimental groups were selective laser melting printing untreated group (CON), mechanical polishing group (MP), low-grit sandblasting group (SB), titanium-reinforced dense polytetrafluoroethylene film group (TRDP). The surface morphology, roughness, hydrophilicity, functional groups and phase composition of the samples were analyzed. The number and morphology of bacteria adhering to the surface of each group of samples after co-culture with Staphylococcus aureus and Escherichia coli were analyzed to evaluate the in vitro antibacterial ability of polytetrafluoroethylene film modified customized titanium mesh. Results The polytetrafluoroethylene film with stable bonding and a high purity is formed on the surface of the PMTM group, which reduced the micron-scale roughness and is highly hydrophobic. The number of bacteria on the surface of the CON group was the largest ( P<0.001), and the numbers of bacteria on the surface of the MP and SB groups were lower. The PMTM and TRDP groups had the lowest bacterial adhesion, and their antibacterial adhesion effects were similar ( P>0.05). Conclusion The preparation of polytetrafluoroethylene film on the surface of customized titanium mesh can improve its ability to inhibit bacterial adhesion, which is an ideal surface treatment method for customized titanium mesh. Reference | Related Articles | Metrics

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Application of platform technology in the treatment of peri-implantitis combined with implant infraposition in the aesthetic zone: a case report and literature review Lin Zhihui, Wang Xi, Man Yi Chinese Journal of Oral Implantology    2023, 28 (6): 424-429.   DOI: 10.12337/zgkqzzxzz.2023.12.006 Abstract （139）      PDF （1718KB）（393）       Knowledge map    Save In the process of long-term functional use of implant-supported dentures, the occurrence of peri-implant biological complications is often difficult to avoid due to various factors such as the patient's overall health condition, surgical procedures, implant restorations, and prosthetic techniques. Additionally, during the long-term clinical follow-up of patients with aesthetic zone implant restorations, it is often observed that the incisal edge of implant restoration is positioned lower towards the root compared to the contralateral natural tooth, indicating implant infraposition. This article reports a case of aesthetic zone implant peri-implantitis combined with implant infraposition treated using platform techniques. In this case, non-surgical treatment was used to control inflammation in the surgical area before the surgery, and connective tissue platform techniques were employed during the surgery to increase soft tissue volume around the implant. Temporary restoration was performed after 3 months postoperatively, followed by the final restoration after 6 months. Short-term treatment results showed that for cases of aesthetic zone implant peri-implantitis combined with implant infraposition, the use of connective tissue platform techniques can effectively achieve soft tissue reconstruction in the surgical area and reduce aesthetic risks. Reference | Related Articles | Metrics

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Progress in research on genes associated with tooth agenesis Zhang Han, Sun Yao Chinese Journal of Oral Implantology    2024, 29 (3): 218-223.   DOI: 10.12337/zgkqzzxzz.2024.06.005 Abstract （139）      PDF （1372KB）（182）       Knowledge map    Save Tooth agenesis, a prevalent oral disease, remains partially elusive in terms of its underlying pathogenic mechanism. Recent breakthroughs have elucidated a series of pathogenic genes associated with this condition, whose encoded proteins play key roles in regulating and guiding normal tooth germ development through essential signaling pathways. This review focuses on genes related to congenital tooth agenesis and their involvement in the signaling pathways of tooth developrnet. As research progreses, especialy through the use of model animal, insights into the pathogenic processes of this developmental anomaly may lead to effective strategies for treating congenital tooth agenesis by modulating the function of these genes or repairing defects in signal transmission.Moreover, this article also discusses the clinical characteristics of congenital tooth agenesis-causing genes observed in human patients and explores the potential link between these genes and the occurrence of tumors. Reference | Related Articles | Metrics

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Recent progress in bone regenerative materials for implant dentistry Li Xin, Liu Kaizheng, Wu Shiyu, Liu Yuanxiang, Huang Baoxin, Qiao Wei, Pan Haobo, Chen Zhuofan Chinese Journal of Oral Implantology    2024, 29 (4): 371-377.   DOI: 10.12337/zgkqzzxzz.2024.08.013 Abstract （139）      PDF （1414KB）（228）       Knowledge map    Save There has been an increasing number of cases involving bone regeneration in oral clinical treatments, and the requirements for related biomaterials are simultaneously getting higher. This review aims to summarize the research status of bone regeneration materials in the field of implant dentistry. First, specific characteristics of oral bone regeneration applications are introduced. Next, the biochemical and physical properties that affect the performance of materials are discussed, followed by some of the key issues in the field. Finally, an outlook on future research directions is provided to promote the development of next-generation oral bone regeneration materials. Reference | Related Articles | Metrics

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Research advances in treatment of tooth agenesis Geng Chenxin, Liu Yang, Han Dong Chinese Journal of Oral Implantology    2024, 29 (3): 224-230.   DOI: 10.12337/zgkqzzxzz.2024.06.006 Abstract （138）      PDF （1368KB）（398）       Knowledge map    Save Tooth agenesis is the most common dental developmental anomaly in humans, which can cause significant chewing, pronunciation, aesthetic and craniofacial development problems. Due to the unique characteristics of tooth agenesis, its treatment is very time-consuming and costly, imposing huge economic burdens and mental stress on patients. The treatments include a sequential therapeutic strategy with a multidisciplinary team of pediatric dentistry, prosthodontics, oral and maxillofacial surgery, orthodontics, oral implantology, and other backgrounds, as well as emerging methods such as targeted molecular therapy and tissue engineering. This review provides an update on the knowledge on the characteristics of tooth agenesis, traditional treatments, and the rising fields of molecular therapy and tissue engineering. We also discuss the treatment effects of each method, aiming to provide a reference for the treatment of tooth agenesis. Reference | Related Articles | Metrics

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Implant restoration of severely insufficient residual bone height and limited interarch distance in the maxillary posterior region: a case report Xu Yehao, Dai Jieting, Ren Bihui, Wei Hongwu, Guo Shuigen Chinese Journal of Oral Implantology    2023, 28 (6): 466-472.   DOI: 10.12337/zgkqzzxzz.2023.12.012 Abstract （138）      PDF （1526KB）（230）       Knowledge map    Save This paper reports on the implant restoration of a case with severely insufficient residual bone height and limited interarch distance in the maxillary posterior region, aiming to provide reference value for the treatment of such patients. In this case, occlusal reconstruction of other teeth was performed first to raise a portion of the occlusion. However, after occlusal reconstruction, the interarch distance remained insufficient. Subsequently, transalveolar sinus floor elevation and bone augmentation surgery were performed at the implant sites to create stable conditions for the late implant placement with surrounding bone. A second transalveolar sinus floor elevation was performed 8 months later, with two taper-retained short implants placed deep under the bone level simultaneously. Follow-up examinations indicated good osseointegration. The peri-implant bone tissue was shown to be stable during the follow-up 2 years after the permanent restoration. Therefore, if the residual bone height and interarch distance in the maxillary posterior region are severely insufficient, transalveolar sinus floor elevation and bone augmentation can be performed first to create a stable condition for bone integration around the implant during late implant placement. Then transalveolar sinus floor elevation and the deep implant placement of short implants can be carried out during the second surgery to create sufficient restorative space for the final restoration. Reference | Related Articles | Metrics

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In vitro study on the accuracy and reproducibility of parameters obtained by optical sensing mandibular movement tracing system Shi Xiaorui, Zhang Jihao, Liu Feng Chinese Journal of Oral Implantology    2024, 29 (1): 24-29.   DOI: 10.12337/zgkqzzxzz.2024.02.005 Abstract （138）      PDF （1495KB）（229）       Knowledge map    Save Objective To measure and compare differences in sagittal condylar inclination (SCI) and sagittal frontal table inclination (SFTI) under different setting values and operating paths through in vitro experiments. Evaluate the accuracy and reproducibility of parameter results obtained by optical sensing mandibular movement tracing system. Methods Based on the actual intraoral scan data and dentition coordinate data files from recruited subjects, personalized measurement models and fixtures were designed and 3D-printed, then installed on the fully adjustable articulator. Bilateral SCI and SFTI were set with gradient changes from 10° to 60°, resulting in a total of 12 groups. The articulator module was used to complete the tracing of the mandibular movement and get the measurement parameters, followed by statistical analysis. Results Except for the 40° and 60° SCI groups and the 10° SFTI group, statistical differences were observed between the measured values and the set values, with standard deviation ranging from 0.300° to 2.994°. There was no statistical difference in SCI values obtained at different acquirement timings of hinge axis during operation. Conclusion The accuracy and reproducibility of parameters obtained by optical sensing mandibular movement tracing system can meet the needs of clinical applications, but there are still certain differences between the measured values and the setting values. Ensuring the stability of the test device, multiple tests on the same object, whether repeated hinge axis positioning is performed or not, has no significant impact on the results. Reference | Related Articles | Metrics