Volumn Content

Chinese Journal of Oral Implantology 2023 Vol.28 Please wait a minute... For Selected: Download Citations EndNote Ris BibTeX Toggle Thumbnails Select As winter turns to spring, let's welcome a new year of progress Su Yucheng Chinese Journal of Oral Implantology    2023, 28 (1): 1-2.   DOI: 10.12337/zgkqzzxzz.2023.02.001 Abstract （253）      PDF （1322KB）（372）       Knowledge map    Save Related Articles | Metrics Select Expert consensus on bone grafting materials for maxillary sinus floor elevation: bone substitutes Chinese Society of Oral Implantology Chinese Journal of Oral Implantology    2023, 28 (1): 3-8.   DOI: 10.12337/zgkqzzxzz.2023.02.002 Abstract （624）      PDF （1435KB）（840）       Knowledge map    Save Autogenous bone has long been considered the "gold standard" for maxillary sinus floor elevation. However, secondary iatrogenic injury, limited source, easy resorption, and high risk of complications at donor sites limit its clinical application. Thus, the search for and selection of an ideal bone substitute for autologous bone becomes the development trend of bone augmentation technique. In this paper, the characteristics of three major bone substitutes including allograft, xenograft, and alloplastic graft, as well as the implant survival rate after the above bone substitutes were used on the maxillary sinus floor were summarized. Reference | Related Articles | Metrics Select Construction of the 3-dimensional osteogenesis model for maxillary sinus Zhou Yanmin, Zhu Yuemeng Chinese Journal of Oral Implantology    2023, 28 (1): 9-18.   DOI: 10.12337/zgkqzzxzz.2023.02.003 Abstract （238）      PDF （2243KB）（372）       Knowledge map    Save Maxillary sinus floor elevation (MSFE) is a commonly used surgical procedure for the restoration and reconstruction of the maxillary posterior area, and the mechanism of MSFE has always been a problem for scholars. The anatomy characteristics of MS and the standardized surgical procedures are essential for predicting osteogenesis patterns. For patients undergoing simultaneous implantation, the scholar has theorized a 3-dimensional osteogenesis model for the maxillary sinus (3D-OMMS) in terms of evidence-based medicine and fundamental research, the three spatial positions of the alveolar ridge bone, Schneider's membrane, and the implant surface. The theoretical development, content, and advantages of osteogenesis are illustrated in this paper. Also, we discussed the technical points of realizing 3D-OMMS, to better understand the model, which would pave the way for clinical treatment decisions for patients with insufficient bone mass in the posterior maxillary region. Reference | Related Articles | Metrics Select Research progress of zinc-based biodegradable metals for biological barrier membrane Xu Shulan, Chen Jiahao Chinese Journal of Oral Implantology    2023, 28 (1): 19-25.   DOI: 10.12337/zgkqzzxzz.2023.02.004 Abstract （320）      PDF （1549KB）（458）       Knowledge map    Save Guided Bone Regeneration (GBR) is the most common bone augmentation procedure in implant dentistry, and the effect of bone augmentation is determined by the material properties of the biological barrier membranes. However, are current biological barrier membranes are insufficient for all clinical requirements, including excellent biocompatibility, high mechanical properties, controllable degradation behavior, superior bioactivity, and easy clinical management. It is required to develop and investigate a novel material for the biological barrier membrane. Biodegradable metals (BMs) refer to metals that are intended to degrade in vivo. Among them, zinc(Zn)-based BMs are regarded as a novel generation of biological barrier membrane materials due to their excellent material properties. Nevertheless, Zn-based biological barrier membranes have been still in the stage of research and development. Based on our previous research studies and considering the future clinical applications, this paper systematically reviewed the research status and drawbacks of Zn-based biological barrier membranes in terms of four aspects: biocompatibility, mechanical properties, biodegradability, and bioactivity, providing scientific evidence to promote its clinical transformation. Reference | Related Articles | Metrics Select Influence of creating food escape grooves adjacent to marginal ridge on the perception of food impaction in implant-supported fixed prosthesis Zheng Jiabao, Gao Wenmo, Zuo Xiaoyun, Yang Bo, Luo Chenchen, Chen Ming Chinese Journal of Oral Implantology    2023, 28 (1): 26-29.   DOI: 10.12337/zgkqzzxzz.2023.02.005 Abstract （453）      PDF （1394KB）（404）       Knowledge map    Save Objective To investigate the effect of creating food escape grooves adjacent to marginal ridge on the improvement of food impaction around implant-supported prosthesis. Methods 41 patients with implant-supported prosthesis in the maxillary and mandibular molar regions complaining of distinct discomfort during chewing caused by food impaction around implants were selected. Food escape grooves were created adjacent to the marginal ridges of implant crowns. The patients were followed up regularly. Results All patients (100%) reported a significant improvement in symptoms of food impaction. Conclusion Creating food escape grooves adjacent to marginal ridge helps to improve the symptoms of food impaction and achieve a high level of patient satisfaction. Reference | Related Articles | Metrics Select Custom impression techniques of multi-unit implant-supported prosthesis in aesthetic zone Chen Danying, Wu Xiayi, Liu Quan, Chen Zhuofan Chinese Journal of Oral Implantology    2023, 28 (1): 30-34.   DOI: 10.12337/zgkqzzxzz.2023.02.006 Abstract （308）      PDF （1596KB）（337）       Knowledge map    Save The accurate transfer of the emergence profile of restoration is of great importance for the successful aesthetic outcome of implant-supported prosthesis in the aesthetic zone. The custom impression technique for a single unit implant-supported prosthesis in the aesthetic zone has been widely used in daily practice. However, the custom impression techniques for the multi-unit implant-supported prosthesis in the aesthetic zone are relatively complex. This current review listed the custom impression techniques for the multi-unit implant-supported prosthesis in the aesthetic zone. By comparing the two clinical situations in whioh the initial impression is missing or available, it is recommended to take separate staged impressions to transfer the implant position and the emergence profile. Reference | Related Articles | Metrics Select Characterization of peri-implant microbes and their changes under diseased conditions Liu Yue, Zhao Yajun, Liu Jin, Du Mi, Lan Jing Chinese Journal of Oral Implantology    2023, 28 (1): 35-39.   DOI: 10.12337/zgkqzzxzz.2023.02.007 Abstract （223）      PDF （1514KB）（413）       Knowledge map    Save Peri-implant disease is a biological complication that occurs in the peri-implant tissue with plaque biofilm as the initiating factor. The initial colonization, homeostasis, and dysbiosis of peri-implant submucosal microbes are closely related to the healthy and diseased states of the peri-implant. This article reviews the research on the characterization of peri-implant microbes and their changes in the diseased states. The results showed that there are significant differences in the structure of submucosal microbes between states of healthy peri-implant, peri-implant mucositis and peri-implantitis. The count of submucosal periodontal pathogens and the complexity of microbes increased when peri-implant disease occurred. The clinical manifestations of peri-implant disease were correlated with the variety in the type and quantity of microbes. Reference | Related Articles | Metrics Select Research progress on nano-silver antibacterial materials in the application in oral implantology Cheng Wen, Ma Xiaoting, Shen Yajie, Lv Shouyin, Shao Bo Chinese Journal of Oral Implantology    2023, 28 (1): 40-46.   DOI: 10.12337/zgkqzzxzz.2023.02.008 Abstract （253）      PDF （1498KB）（356）       Knowledge map    Save As a new type of highly effective nanometer antibacterial material, nano-silver has a broad-spectrum antibacterial ability, high antibacterial efficiency, and good anti-inflammatory properties. At present, it is widely used in various fields of stomatology. The antibacterial mechanism and application of nano-silver was reviewed for the field of oral implantology, and the antibacterial research prospect of nano-silver were forecasted. Reference | Related Articles | Metrics Select The influence of anatomical characteristics of the alveolar bone on the outcome of guided bone regeneration in the aesthetic zone Xu Yifan, Ye Ying Chinese Journal of Oral Implantology    2023, 28 (1): 47-52.   DOI: 10.12337/zgkqzzxzz.2023.02.009 Abstract （250）      PDF （1313KB）（334）       Knowledge map    Save The implantation in the aesthetic zone is often accompanied by bone augmentation surgery to acquire enough peri-implant bone volume. Meanwhile, bone augmentation may achieve greater contour morphology and lay a solid foundation for soft tissue aesthetic effects. The guided bone regeneration (GBR) is the most common bone augmentation surgery performed in the aesthetic zone and has a satisfactory clinical outcome. Considerable literatures have discussed the factors influencing the postoperative effects of GBR, including factors associated with patients and surgery. This review focuses on the patient-related local factors, summarizing the evidence about the anatomical characteristics of the alveolar bone. We discuss the relationship between the anatomical characteristics of the alveolar bone and postoperative outcome of GBR, including the morphology of alveolar bone defect, the initial bone volume, the blood supply of alveolar bone at the implant sites, and the characteristics of the extraction socket in immediate implant placement, to provide a reference for the treatment planning for patients with bone defects in the aesthetic area and for the long-term prognosis of GBR. Reference | Related Articles | Metrics Select Progress in the study of osteogenesis after maxillary sinus floor elevation Deng Lei, Huang Haitao Chinese Journal of Oral Implantology    2023, 28 (1): 53-57.   DOI: 10.12337/zgkqzzxzz.2023.02.010 Abstract （280）      PDF （1561KB）（379）       Knowledge map    Save Maxillary sinus floor elevation is the main technique to address the problem of bone shortage in the maxillary posterior region currently. By creating an osteogenic space in the maxillary sinus floor, bone graft materials can be implanted or not implanted to guide the growth of new bone, thereby increasing the osseointegration of the implant and achieving long-term stability of the implant. Therefore, the research on the source and osteogenic mechanism of new bone after maxillary sinus floor elevation is of great importance for the improvement of clinical surgery and the long-term success of the implant. Reference | Related Articles | Metrics Select The decision-making principles of sinus floor elevation (part 3) Pi Xuemin, Liu Qian, Chen Deping, Ren Bin, Pan Hong, Su Yucheng Chinese Journal of Oral Implantology    2023, 28 (1): 58-66.   DOI: 10.12337/zgkqzzxzz.2023.02.011 Abstract （313）      PDF （1350KB）（566）       Knowledge map    Save Reference | Related Articles | Metrics Select Clinical implications of 3-dimensional osteogenesis model for maxillary sinus to promote osteogenesis in maxillary sinus Zhou Yanmin, Qin Qiuyue Chinese Journal of Oral Implantology    2023, 28 (2): 69-76.   DOI: 10.12337/zgkqzzxzz.2023.04.001 Abstract （377）      PDF （2718KB）（651）       Knowledge map    Save The "3-dimensional osteogenesis model for maxillary sinus" (3D-OMMS) elucidated the osteogenic mechanism of maxillary sinus floor elevation. It provides a scientific theoretical basis for the treatment of maxillary sinus floor elevation in patients with missing maxillary posterior teeth. This manuscript reports the clinical application of "3D-OMMS" in the implants including single tooth or multiple teeth, immediate and delayed implants, transalveolar sinus floor elevation and lateral window approach sinus floor elevation, respectively. Preoperative and postoperative cone-beam computed tomography（CBCT）images were used to evaluate the osteogenic effect of the maxillary sinus region. In conclusion, the application of 3D-OMMS can form a three-dimensional space with diversified osteogenic directions in the maxillary sinus, shorten the vascularization osteogenesis path, accelerate the osteogenic process, improve the quality of new bone, and increase the success rate of implantation, which can be widely used in clinical practice. Reference | Related Articles | Metrics Select Study on surface dealloying treatment and cytocompatibility of 3D printed nickel-titanium implants Qin Xinyu, Zhang Liang, Chen Yingying, Han Zekui, Su Yucheng, Wang Xinyu Chinese Journal of Oral Implantology    2023, 28 (2): 77-81.   DOI: 10.12337/zgkqzzxzz.2023.04.002 Abstract （232）      PDF （1383KB）（398）       Knowledge map    Save Objective This paper investigates the optimal modification process of 3D printed nickel-titanium alloys by bioactive treatments such as sandblasting, acid etching, and dealloying. Methods The surface structure and properties of specimens were examined by scanning electron microscope (SEM), energy dispersive spectrometer (EDS) and contact angle measurement. In this study, bone marrow mesenchymal stem cells (hBMSCs) were used to study the biocompatibility and osteogenic activity of different surfaces. Results The hydrophilicity of the dealloying surface was improved. EDS results showed that the surface nickel elementdecreased from 52.1wt% to 18.6wt%, which not only accelerated the differentiation and proliferation of cells on the surface, but also enhanced the adhesion ability of cells. Conclusion The dealloyed surface constructed a more abundant nanoscale mesh structure, which significantly promoted the osteogenic differentiation and functional expression of cells, which was of great importance for improving the osseointegration ability and long-term stability of implants. Reference | Related Articles | Metrics Select Influence of anatomical factors of maxillary sinus on the remodeling of bone graft materials for maxillary sinus floor lift Yu Zhengrong, Guo Shuigen, Yang Jingjing, Mao Weihua, Wei Hongwu Chinese Journal of Oral Implantology    2023, 28 (2): 82-89.   DOI: 10.12337/zgkqzzxzz.2023.04.003 Abstract （212）      PDF （1462KB）（340）       Knowledge map    Save Objective To evaluate the effects of anatomical factors (sinus cavity width, sinus cavity angle, and sinus floor morphology) on the reconstruction of bone graft materials for transalveolar technique for sinus floor elevation. Methods A total of 36 implant sites in 23 patients were included to analyze the changes in bone height and bone density at 6 months and immediately after surgery, and to evaluate the effect of anatomical factors of maxillary sinus on bone graft material modification in the maxillary sinus. Results The sinus cavity width, sinus cavity angle, and sinus floor morphology (intruding angle) were significantly positively correlated with bone height changes, P<0.01. Sinus floor morphology (intruding angle) was negatively correlated with changes in bone density around the implant, P<0.05. There was no significant correlation between RBH and bone graft material reconstruction, and different contact numbers of the bone walls had no significant effect on bone graft material reconstruction. Conclusion There was a correlation between the anatomical factors of the maxillary sinus and the reconstruction of bone graft materials in the maxillary sinus, and the anatomical morphology of the maxillary sinus should be carefully evaluated before surgery. Reference | Related Articles | Metrics Select Clinical analysis of extraction site preservation using Bio-Oss Collagen after extraction of maxillary molars Yu Jiuyue, Jia Wenhao, Fang Li, Wang Jian, Li Jiangming, Liu Han, Guo Qili Chinese Journal of Oral Implantology    2023, 28 (2): 90-96.   DOI: 10.12337/zgkqzzxzz.2023.04.004 Abstract （377）      PDF （1591KB）（465）       Knowledge map    Save Objective To investigate a clinical treatment method for extraction site preservation using Bio-Oss Collagen after extraction of maxillary molars. Methods The clinical data of 6 cases were retrospectively analyzed, and all 6 patients were treated with Bio-Oss Collagen for extraction site preservation after extraction of maxillary molar teeth. These six cases met the following characteristics: the affected tooth was destructed in the alveolar bone in the area of its furcation due to periodontitis or combined periodontal-endodontic lesions, and needed to be extracted; the remaining bone height in the top central part of the alveolar ridge was less than 3.5 mm after the extraction of the affected tooth; the bone walls of the buccal, lingual, mesial and distal parts of the extraction socket were nearly intact. After extraction of the affected tooth, the granulation tissue in the alveolar socket was thoroughly removed. Bio-Oss Collagen was placed in the alveolar sockets and the soft tissues were cross-sutured to hold the graft in place. The sutures are removed 7-10 days after surgery. CBCT was taken preoperatively, immediately postoperatively and at six months postoperatively. The vertical height of the remaining alveolar ridge was measured using Mimics 20.0 at five sites: buccal and lingual in the coronal position, mesial and distal in the median sagittal position, and central. Results Primary healing was obtained in all six patients. At 6 months after extraction, the patients had well healed alveolar sockets, normal gingival color and texture, and no change in attached gingival width. CBCT taken at 6 months after extraction showed no change or a small increase in alveolar crest height at the buccal, lingual, mesial and distal sites, but an increase of 3.48 to 7.89 mm at the central site, among the 5 sites measured. Conclusion After extraction of maxillary molars, Bio-Oss Collagen can be used for extraction site preservation if the surrounding bone wall height is adequate. This method causes less trauma, has a shorter operation time, and its results are similar to those of conventional extraction site preservation. Reference | Related Articles | Metrics Select Application of Bio-Oss Collagen with tent pole procedure in vertical bone augmentation of edentulous maxillary posterior area: a case report Li Xiaoyu, He Jie, Wang Xueke, Duan Jingyi, Ge Chang, Meng Weiyan Chinese Journal of Oral Implantology    2023, 28 (2): 97-101.   DOI: 10.12337/zgkqzzxzz.2023.04.005 Abstract （242）      PDF （1566KB）（462）       Knowledge map    Save Vertical bone augmentation is one of the greatest challenges of bone regeneration in implant dentistry. When the bone defect is large, it is often necessary to open a second operative area for autologous bone block grafting or to use titanium mesh or non-absorbable membrane in combination with autologous bone blocks or particulates. The incidence of complications is high and the surgical trauma is significant. In this case, the patient had a severe vertical bone defect in the posterior maxillary region. Bio-Oss Collagen combined with titanium tent poles and absorbable collagen membrane were used for vertical bone augmentation. The average bone height increased by 6.57 mm at 6 months after bone grafting, which met the need of implant implantation. The bone tissue around the implant was relatively stable during the follow-up after restoration. Due to the predictable effect of bone augmentation, the simpler operation procedure and the less invasive results, this operation can provide a reference for the clinical selection of vertical bone augmentation. Reference | Related Articles | Metrics Select The autologous platelet concentrates for maxillary sinus floor elevation: an overview of systematic reviews Gong Jiaming, Zhao Ruimin, Zhang Qihang, Yu Zhanhai, Su Linhan Chinese Journal of Oral Implantology    2023, 28 (2): 102-108.   DOI: 10.12337/zgkqzzxzz.2023.04.006 Abstract （314）      PDF （1256KB）（319）       Knowledge map    Save Objective To evaluate the quality of methodology and evidence of the systematic reviews and meta-analyses (SR/MA) of autologous platelet concentrates (APC) for maxillary sinus floor elevation (MSFE). Methods PubMed, Embase, Cochrane Library, Scopus, CNKI, SinoMed, and WanFang databases were electronically searched to enroll SR/MA of APC for MSFE from inception to August 31, 2022. Two reviewers independently screened literature, extracted data, and employed the AMSTAR 2 and the GRADE for evaluating the quality of methodology of the included studies and the certainty of the evidence for outcomes respectively. Results A total of 13 SR/MA were included and the major conclusions were that APC presents limited influence on MSFE and might promote the healing of sinus tissue. The 9 items of AMSTAR 2 were reported well, and two items were not reported in any of the included SRs, and the quality was relatively convinced. The evidence grading of GRADE revealed that, in the total of 46 outcomes, 9 were graded as high-level, 25 as medium-level, 11 as low-level, and 1 as extremely low-level. Conclusion Most of the current evidence shows the advantages of APC in MSFE are not obvious, but the reliability of SR/Ma is inconsistent. High-quality clinical trials are still needed to verify the efficacy of APC for MSFE Reference | Related Articles | Metrics Select Research progress on trace elements modification of PEEK implant Luo Guisheng, Liu Yumeng, Wang Penglai, Yuan Changyong Chinese Journal of Oral Implantology    2023, 28 (2): 109-113.   DOI: 10.12337/zgkqzzxzz.2023.04.007 Abstract （188）      PDF （1192KB）（398）       Knowledge map    Save Polyetheretherketone (PEEK) is a high-performance specialty plastic with good mechanical properties and biocompatibility and is easy to process and form, making it an alternative material for dental implants. However, the lack of biological activity and the easy accumulation of plaque limit the clinical application of PEEK in the field of oral implantology. At present, many scholars solve the problem of biological inertia and plaque attachment of PEEK through trace elements modification. Different trace elements have their own advantages. Strontium, tantalum, manganese, and other elements can promote osteoblast differentiation. Fluorine, silver, zinc, and other elements can inhibit the growth of inflammatory bacteria, and the co-modification of various trace elements gives PEEK implant more diversified properties. Reference | Related Articles | Metrics Select Research status on 3D printed individualized scaffold materials in alveolar bone augmentation Cheng Yi, Huang Haitao Chinese Journal of Oral Implantology    2023, 28 (2): 114-118.   DOI: 10.12337/zgkqzzxzz.2023.04.008 Abstract （220）      PDF （1165KB）（475）       Knowledge map    Save Patients with severe bone mass deficiencies require bone augmentation surgery prior to implantation, and the success depends on the stability of the bone graft material and the ability to maintain the bone regeneration space. The scaffolds provide the spatial structure and osteogenic environment for bone regeneration, which are critical to the effect of bone augmentation. With the development of computer-aided design and computer-aided manufacturing, 3D printed individualized scaffolds prepared from different materials have emerged. In this paper, the characteristics and applications of titanium mesh, polyetheretherketone mesh and absorbable polymer composite scaffold materials are discussed, and the application effects and future development directions are evaluated. Reference | Related Articles | Metrics Select Research progress of the socket shield technique Luo Zhen, Liu Hong, Wu Wangxi Chinese Journal of Oral Implantology    2023, 28 (2): 119-123.   DOI: 10.12337/zgkqzzxzz.2023.04.009 Abstract （822）      PDF （1177KB）（680）       Knowledge map    Save The socket shield technique is a new technology emerging in oral implantology in the last decade or so. Its introduction is to fundamentally interrupt the process of physiologic resorption in the alveolar socket after the tooth extraction. But no consensus has been reached on the standard operation and long-term effect of this treatment. Meanwhile with the development of digital technology, how to accurately and efficiently apply the socket shield technique has gradually attracted attention. The clinical procedure, the complication, the evaluation index and the digital application of the socket shield technique will be reviewed in this paper, hoping to provide a theoretical basis for the promotion of this technique in oral implantology. Reference | Related Articles | Metrics Select Combined use of computer-assisted dynamic navigation and socket shield technique in immediate implant placement Liu Quan, Chen Jieyin, Liu Meixiu, Chen Zhuofan Chinese Journal of Oral Implantology    2023, 28 (2): 124-127.   DOI: 10.12337/zgkqzzxzz.2023.04.010 Abstract （172）      PDF （1524KB）（375）       Knowledge map    Save The optimal three-dimensional position of dental implants could be obtained by using computer-assisted dynamic navigation based on intraoperative tracking and real-time feedback. The recession of peri-implant soft- and hard tissues can be largely reduced by the socket-shield technique due to the preservation of root segments and periodontal ligaments. Therefore, the combined use of computer-assisted dynamic navigation and socket shield technique in immediate implant placement may be of value to achieve a satisfactory clinical outcome. The aim of this article was to elaborate on the main procedure in the combined use of computer-assisted dynamic navigation and socket shield technique in immediate implant placement. Reference | Related Articles | Metrics Select Clinical procedure of transalveolar technique for sinus floor elevation Chen Deping, Liu Qian, Pi Xuemin, Pan Hong, Ren Bin, Su Yucheng Chinese Journal of Oral Implantology    2023, 28 (2): 128-132.   DOI: 10.12337/zgkqzzxzz.2023.04.011 Abstract （346）      PDF （1348KB）（813）       Knowledge map    Save The transalveolar technique for sinus floor elevation is a common surgical approach when there is insufficient vertical bone height in the maxillary posterior region for implant treatment. This article describes the evolution of this technique and the technical points of the clinical approach. It is very difficult to assess the intactness of the maxillary sinus mucoperiosteum in transalveolar technique when simultaneous bone augmentation is required. The use of electronic endoscope is a very helpful method to better confirm the preparation depth of the implant site and the status of the maxillary sinus mucoperiosteum, thus effectively avoiding complications of bone augmentation due to the maxillary sinus mucoperiosteum perforation. This article focuses on the clinical procedures and considerations in the use of transalveolar technique for sinus floor elevation to provide a reference for clinicians to improve the predictability of this technique. Reference | Related Articles | Metrics Select Preface to the special section on dental implant robots Chinese Journal of Oral Implantology    2023, 28 (3): 133-133.   DOI: 10.12337/zgkqzzxzz.2023.06.001 Abstract （104）      PDF （1095KB）（164）       Knowledge map    Save Related Articles | Metrics Select Expert consensus on the clinical application of dental implant robots (first edition) Chen Jiang, Su Yucheng, Shen Guofang, Zhou Yanmin, Man Yi, Wu Yiqun, Yang Guoli, Zhang Yufeng, Tang Chunbo, Liu Qian, Fu Gang, Du Liangzhi, Liu Feng, Gao Yongbo, Yang Xingmei, Chen Deping, Chen Zhuofan, Xu Shulan, Wang Liping, Zhang Sihui Chinese Journal of Oral Implantology    2023, 28 (3): 134-139.   DOI: 10.12337/zgkqzzxzz.2023.06.002 Abstract （386）      PDF （1437KB）（647）       Knowledge map    Save Dental implant robot is a new clinical technology in the field of dental implantology in recent years. In view of its high accuracy and stability, it has been applied in many professional fields of stomatology, such as dental implant, oral and maxillofacial surgery, etc. On the basis of clinical application and document retrieval, this consensus discusses the definition of related terms, clinical application requirements, operation specifications and risk prevention of dental implant robots, putting forward consensus views based on the clinical operation experience of some domestic experts. Reference | Related Articles | Metrics Select Robotic computer-assisted implant surgery: opportunities and challenges Xu Shulan, Li Ping Chinese Journal of Oral Implantology    2023, 28 (3): 140-145.   DOI: 10.12337/zgkqzzxzz.2023.06.003 Abstract （167）      PDF （1370KB）（298）       Knowledge map    Save The precise placement of dental implants is crucial for successful implant surgery. As a technological innovation, robotic-assisted technology offers personalized, predictable, and exact surgical methods for implant placement. With the gradual expansion of robotic-assisted technology in the field of oral implantology, it provides new directions and opportunities for development, as well as challenges and difficulties. This article aims to introduce the basic principles and clinical applications of robotic-assisted technology, as well as to discuss the emerging opportunities and challenges that come with its use in oral implantology. Reference | Related Articles | Metrics Select Progress in clinical application of implant robotics, dynamic navigation system and full-guide template in the field of oral implantology Man Yi, Yang Mutong Chinese Journal of Oral Implantology    2023, 28 (3): 146-151.   DOI: 10.12337/zgkqzzxzz.2023.06.004 Abstract （325）      PDF （1434KB）（379）       Knowledge map    Save With the development of digital technology in dental implantology, from the full-guide template to the dynamic navigation system, and now to the implant robotics, implant accuracy has always been a topic of concern in the field of dental implantology. In this paper, the clinical application process of full-guide template, dynamic navigation system, and implant robotics was described, and their respective advantages were analyzed. The purpose of this study is to provide a reference for clinical implantologists when selecting digital technology. Reference | Related Articles | Metrics Select Study on the surgical accuracy of dental implant robot with different optical tracking systems Xie Rui, Li Zhiwen, Ren Nan, Zhao Ruifeng, Bai Shizhu Chinese Journal of Oral Implantology    2023, 28 (3): 152-158.   DOI: 10.12337/zgkqzzxzz.2023.06.005 Abstract （111）      PDF （1551KB）（210）       Knowledge map    Save Objective To evaluate the effect of different optical tracking systems on the surgical accuracy of the dental implant robot for clinical application. Methods Visible light guidance and infrared light guidance were integrated into the experimental platform of the implant robot. After planning the implant position and path, the robot prepared the implant beds on the modular dentition defect implant models autonomously. 20 implant beds were prepared under each guidance. After the preparation, CBCT scanned the implant models, reconstructed the three-dimensional shape of the implant beds and compared them with the planned implant position to obtain the shoulder deviation, root deviation and angle deviation. An independent sample t-test was performed to analyze the effect of the two optical tracking systems on the accuracy of the dental implant robot. Results The mean and standard deviation of shoulder deviation, root deviation and angle deviation of the preparation guided by infrared light guidance were （0.39±0.14）mm,（0.60±0.19）mm and（2.03±0.84）degrees. The mean and standard deviation of shoulder deviation, root deviation and angle deviation of the preparation guided by visible light guidance were （0.57±0.21） mm,（0.89±0.30）mm and（3.08±1.13）degrees. The results of the independent sample t-test showed that there was a significant difference in the accuracy of implant bed preparation guided by two different principles of optical tracking systems ( P<0.05). Conclusion The results of the in vitro model experiments showed that the deviation of the surgical accuracy of the dental implant robot guided by visible light is greater than that guided by infrared light. Reference | Related Articles | Metrics Select Analysis of the clinical application value of minimally invasive non-flap technique based on autonomous robot implant surgery He Jin, Ren Lingfei, Zhang Qinmeng, Jiang Zhiwei, Yang Guoli Chinese Journal of Oral Implantology    2023, 28 (3): 159-164.   DOI: 10.12337/zgkqzzxzz.2023.06.006 Abstract （86）      PDF （1500KB）（241）       Knowledge map    Save Objective To compare the accuracy and postoperative pain response of autonomous robotic and traditional free-hand implantations. Methods This study reviewed patients with dentition defects who underwent autonomous robotic (non-flap technique) and free-hand (flap technique) implantations at the Affiliated Hospital of Stomatology of the Zhejiang University School of Medicine from August 2022 to April 2023. Preoperative and postoperative cone beam computer tomography (CBCT) was used to compare the accuracy. The NRS score was applied to evaluate the pain response of patients in the first week after surgery. Results The linear and angular deviations in the robot group were significantly lower than those of the free-hand group [platform: (0.57±0.12)mm vs. (1.43±0.54)mm, apex: (0.59 ± 0.99)mm vs. (2.17±0.78)mm, angle: 1.13°±0.46 ° vs. 7.36°±4.02° ( P < 0.05). ] NRS scores showed that patients in the robot group had a significantly lower pain response compared to the free-hand group on the 1st, 2nd, and 7th postoperative days. Conclusion The non-flap autonomous robotic implantation makes oral implant surgery more accurate and minimally invasive, and reduces the postoperative pain response, providing a promising alternative in the future clinical implant surgery. Reference | Related Articles | Metrics Select Research on the accuracy of dental implant robot in immediate implantation Jiang Yuxi, Sun Shichen, Wan Linzi, Liu Wenfeng, Yang Zhikang, Wu Xifeng, Sun Haipeng, Li Shuchun, Gao Yongbo Chinese Journal of Oral Implantology    2023, 28 (3): 165-171.   DOI: 10.12337/zgkqzzxzz.2023.06.007 Abstract （104）      PDF （1575KB）（193）       Knowledge map    Save Objective To investigate the accuracy error of dental implant robots in immediate and delayed implantation. Methods Implant patients who met the requirements of implant restoration treatment were divided into two groups: immediate implant ( n=4) and delayed implant ( n=6). Each group was implanted with a dental implant robot. Preoperative CBCT, implant position design, surgical procedure planning, robotic arm registration and alignment were routinely performed, and implant socket preparation and implant placement were performed by the robot. The implant placement error was analyzed by CBCT after surgery. Results The dental implant robot surgery was successfully completed, and there were no complications during and after the surgery. The deviation of the implant depth at the apical point was (0.25±0.13) mm in the immediate the implant group and (-0.88±0.49) mm in the delayed implant group, and the deviation of the implant angle was 1.38°±0.14° in the immediate implant group and 0.59°±0.08° in the delayed implant group. There was a statistical difference between the two groups ( P<0.05). Conclusion The dental implant robot showed good accuracy in both immediate and delayed implantation. The accuracy of the implant point and the apical point of the dental implant robot during immediate implantation is close, and the angle deviation is greater than that of the delayed implant. Reference | Related Articles | Metrics Select Accuracy analysis of dental implant robot in immediate implantation in the anterior region Huang Hong, Fu Gang, Chen Xi, He Tian Chinese Journal of Oral Implantology    2023, 28 (3): 172-178.   DOI: 10.12337/zgkqzzxzz.2023.06.008 Abstract （120）      PDF （1472KB）（163）       Knowledge map    Save Objective To investigate the accuracy of the autonomous implant robot-assisted immediate implant surgery in the anterior region. Methods Ten cases with 10 implant sites in the anterior region requiring immediate implantation were included according to the inclusion criteria. The implant bed preparation and placement were performed according to the standardized procedure of the dental implant robot. After surgery, CBCT was taken again and the deviation between the actual implant sites and the designed sites was evaluated using the robotic navigation software. Results The average total deviation of the implant neck was（ 0.86±0.40）mm, the lateral deviation was （0.69±0.36）mm, and the depth deviation was（ 0.28±0.57） mm. The average total deviation of the implant apex was（0.98±0.49） mm, the lateral deviation was （0.81±0.49 ）mm, the depth deviation was（0.29±0.58）mm, and the angular deviation was 1.09°±0.61°. Conclusion The autonomous robot-assisted immediate implantation in the anterior region is highly accurate and can achieve satisfactory clinical results. Reference | Related Articles | Metrics Select Clinical study of dental implant robot-assisted implant surgery and immediate restoration in esthetic area Pi Xuemin, Chen Deping, Ren Bin, Pan Hong, Su Yucheng, Liu Qian, Wang Xia Chinese Journal of Oral Implantology    2023, 28 (3): 179-185.   DOI: 10.12337/zgkqzzxzz.2023.06.009 Abstract （120）      PDF （1362KB）（175）       Knowledge map    Save Objective To study the clinical application of dental implant robot-assisted implant surgery and immediate restoration in esthetic zone. Methods The dental implant robot-assisted surgery and immediate restoration cases in the aesthetic area were reviewed at the Beijing Citident Hospital of Stomatology, and the deviation between the preoperative design and the actual postoperative position of the implant was analyzed. Results In this study, 10 patients were treated with 12 implants which were placed by the dental implant robot. The total deviation of the implant points was (0.488 ± 0.268) mm (range 0.110 to 0.810 mm), and the total deviation of the apex point was (0.573±0.278)mm(range 0.180 to 1.040 mm), and the average angular deviation was 1.166°±0.439°(range 0.290° to 1.690°). The total deviation of the implant points from the apex was highly correlated with the lateral deviation and weakly correlated with the depth deviation. Conclusion The implant robot has high navigation accuracy and can accurately perform the preoperatively designed implant position during surgery. It is suitable for assisting with implant bed preparation and implant placement in the esthetic area, and is conducive to the rapid and accurate completion of clinical procedures such as immediate restoration. Reference | Related Articles | Metrics Select Meta-analysis of the accuracy of robotic system-assisted dental implant surgery Li Yanqin, Chen Jiang Chinese Journal of Oral Implantology    2023, 28 (3): 186-192.   DOI: 10.12337/zgkqzzxzz.2023.06.010 Abstract （109）      PDF （1566KB）（211）       Knowledge map    Save Objective To systematically evaluate the accuracy of robotic system-assisted dental implant surgery . Methods A search was performed for studies on surgical robot-assisted implantation, including in vitro model tests, animal experiments, and clinical studies that were published before January 2023, from the databases including PubMed, Embase, Cochrane library, CNKI, VIP, Wanfang and CBM databases. The main outcome index was the deviation between the preoperative design of the implant and the actual position in the three-dimensional direction, including the implant platform, the implant apex and the implant axial angle. Data were combined and analyzed using Stata 17.0. The subgroup analysis was used to compare the deviations of different research designs, with or without implant placement, and different robot systems. Results A total of 14 papers were included, including 9 model trials, 3 clinical studies and 3 animal studies, with a total of 705 implant sites. According to the results of meta-analysis, the deviation of the platform in the robot-assisted implant surgery is 0.72mm (95% CI:0.63-0.81, I2=93.2%), the apex deviation is 0.90mm (95% CI:0.76-1.03, I2=95.7%), and the angle deviation is 1.57° (95% CI:1.26-1.88, I2=98.1%). Conclusion The accuracy of implant surgery robot has reached an acceptable clinical level. Most studies are model trials, and more clinical studies are needed to enrich the data. Reference | Related Articles | Metrics Select Research and application progress of surgical robot system for zygomatic implant placement Tao Baoxin, Wang Wenying, Wu Yiqun Chinese Journal of Oral Implantology    2023, 28 (3): 193-197.   DOI: 10.12337/zgkqzzxzz.2023.06.011 Abstract （137）      PDF （1279KB）（165）       Knowledge map    Save The application of robot technology in the field of oral implantology is in the rise. The robotic system enables higher accuracy in dental implant site preparation and implant placement, making the implant surgery more personalized and predictable. As a complex surgery in dental implantology, zygomatic implant surgery requires higher accuracy due to its long drilling path, complex adjacent anatomical structures, and poor view. These problems also increase the difficulty of zygomatic implant surgery. Robotic technology seems to be an efficient method to improve the accuracy and predictability of zygomatic implantation surgery. This review introduces the composition, principle, research progress, and clinical application of robotic system for zygomatic implant surgery, and discusses the optimization considerations of the robotic system. Reference | Related Articles | Metrics Select Force analysis of personalized titanium mesh for guided bone regeneration based on finite element method Ma Rui, Wang Zhihui, LiuYang, Gao Yang Chinese Journal of Oral Implantology    2023, 28 (3): 198-203.   DOI: 10.12337/zgkqzzxzz.2023.06.012 Abstract （110）      PDF （1791KB）（205）       Knowledge map    Save Objective Based on finite element analysis, the stress and displacement distributions of the titanium mesh were analyzed under different thicknesses, different porosities and different rod diameter of the fillings of the convention unit cell structure in response to vertical external forces. The results of the analysis can provide a biomechanical basis for the design of personalized titanium mesh when used to guide bone regeneration in the treatment of jawbone defects. Methods The mandible of a patient with 31-32 defects was used as a study carrier for small-sized titanium mesh (S-type), and the mandible of a patient with 33-37 defects was used for large-sized titanium mesh (L-type). A 3D model reconstruction of the jaws was performed for their CBCT images, respectively. Based on this, titanium mesh with different thicknesses, porosities, and rod diameters was designed, and 3D finite element models were established. The stress and displacement distribution of the titanium mesh under stress conditions was analyzed by FEM analysis. Results With an increase in titanium mesh thickness, the stresses and displacements of titanium mesh show a decreasing trend; with an increase in the porosity of titanium mesh, the stresses and displacement of titanium mesh show an increasing trend; with an increase in the diameter of the titanium mesh rod, the stress and displacement of S-type titanium mesh showed a decreasing trend, while the stress and displacement of L-type titanium mesh showed no obvious trend. Conclusion The stress values of all titanium meshes are within the safe equivalent stress range with sufficient strength for thicknesses of 0.4 mm and above, considering that too thick titanium mesh will stimulate the mucosa, 0.4mm thickness titanium mesh is more suitable for clinical needs; stress values were within the safe equivalent force range for S-type with 55% porosity and below, and L-type with 55%~68% porosity, with sufficient strength, increasing the porosity of titanium mesh can provide more adequate blood channels to the mucosa, reducing the risk of mucosal ischemia atrophy and cracking, L-type titanium mesh should try to choose 68% porosity, S-type titanium mesh should choose 55% porosity; S-type titanium mesh rod diameter at 0.7 mm and above, L-type titanium mesh rod diameter at 0.5 mm and above, can meet the strength requirements , comprehensive porosity and other comprehensive factors, considering that the larger the rod diameter, the mucosal stimulation increases, so the 0.7 mm rod diameter titanium mesh is more suitable for clinical needs. Reference | Related Articles | Metrics Select Mechanical properties of homogeneous and gradient porosity Gyroid structures and porous implant additive manufacturing Song Yihan, Zheng Xiaoxiao, Sun Zihui, Zhang Yan, Han Zekui, Su Yucheng, Wang Xinyu Chinese Journal of Oral Implantology    2023, 28 (3): 204-209.   DOI: 10.12337/zgkqzzxzz.2023.06.013 Abstract （103）      PDF （2223KB）（209）       Knowledge map    Save Objective To study the mechanical properties of Gyroid structures with different porosity and gradient porosity, and to design and prepare a new type of porous implant. Methods Gyroid structure models with homogeneous porosity of 60%, 65%, 70%, 75%, 80% and 60%~80% gradient were established by MSLattice and Magics software. The mechanical properties of Gyroid structures with different porosity were compared by finite element analysis and mechanical compression test respectively. A new porous implant was designed and fabricated by selective laser melting (SLM). Results As the porosity increases, the elastic modulus and compressive strength of the Gyroid structure decreased. At the same porosity, the differences in the elastic modulus of the Gyroid structures were not statistically significant ( P>0.05), and the maximum compressive strengths of the gradient Gyroid structures were lower than those of the homogeneous porosity Gyroid structures. Conclusion The gradient Gyroid structure matches the elastic modulus of cortical bone and cancellous bone, and the strength is similar to that of human bone, which has excellent mechanical properties and is expected to be used in dental implants. Reference | Related Articles | Metrics Select Digital technology-assisted implant-supported full-arch fixed prosthesis: a case report Chinese Journal of Oral Implantology    2023, 28 (3): 210-214.   DOI: 10.12337/zgkqzzxzz.2023.06.014 Abstract （129）      PDF （2019KB）（239）       Knowledge map    Save Reference | Related Articles | Metrics Select The first summit of domestic oral implant material research and development Chinese Journal of Oral Implantology    2023, 28 (3): 215-215.   Abstract （56）      PDF （802KB）（74）       Knowledge map    Save Related Articles | Metrics Select Preface for the key column on edentulous implant treatment Chinese Journal of Oral Implantology    2023, 28 (4): 216-216.   DOI: 10.12337/zgkqzzxzz.2023.08.001 Abstract （154）      PDF （1023KB）（241）       Knowledge map    Save Related Articles | Metrics Select Exploration of the application of digital technology in implant treatment of edentulous patients Sun Wei, Shi Bin Chinese Journal of Oral Implantology    2023, 28 (4): 217-222.   DOI: 10.12337/zgkqzzxzz.2023.08.002 Abstract （209）      PDF （1523KB）（405）       Knowledge map    Save With the widespread application of digital technology in oral implantology, implant surgery and prosthetic procedures have been significantly optimized. However, the digital process of implant treatment for patients with edentulism has yet to be integrated. This paper combined the application of emerging digital technologies in the process of implant treatment for patients with edentulism and sorted out the full digital process in order to provide reference for implant specialists. Reference | Related Articles | Metrics Select A case series on accuracy analysis of metal implant guides in edentulism Luo Minrun, Bai Xueying, Zhu Yuxi, Wu Tao, Zhou Yi Chinese Journal of Oral Implantology    2023, 28 (4): 223-228.   DOI: 10.12337/zgkqzzxzz.2023.08.003 Abstract （139）      PDF （1431KB）（186）       Knowledge map    Save Objective This study analyzed the accuracy of implant placement in edentulism implant surgeries guided by metal guides through a case series. Methods Five cases of full or partial edentulism implant surgeries with a total of 35 implants were included. Preoperative cone beam computed tomography (CBCT) was performed to obtain three-dimensional data, which was then used to design the implant guide within software. Titanium metal guides were 3D-printed and used for guided implant placement. The accuracy of the metal guides was analyzed by comparing the planned implant positions with the postoperative positions. Results After excluding 5 partially guided implants, 1 zygomatic implant, and 4 maxillary sinus elevation implants, a total of 25 implants were included in the analysis. No guide fractures or thermal osteonecrosis were observed, and all implants achieved successful healing. In the mesiodistal direction, the average apex horizontal displacement was 0.91 (0.28-1.35) mm, neck horizontal displacement was 0.46 (0.23-0.83) mm, apex vertical displacement was 0.57 (0.29-0.80) mm, and angular deviation was 1.93° (1.02°-3.40°). In the buccolingual direction, the average apex horizontal displacement was 0.84 (0.43-1.51) mm, neck horizontal displacement was 0.77 (0.32-1.05) mm, apex vertical displacement was 0.52 (0.30-0.88) mm, and angular deviation was 2.77° (2.09°-4.21°). Conclusion In this limited case series of edentulism implant surgeries, metal guide plates have shown similar accuracy and clinical outcomes to those of resin guide plates. Reference | Related Articles | Metrics page Page 1 of 3 Total 83 records First page Prev page Next page Last page