Shen Liheng, Dong Chengzhi, Chen Jianping, Bai Xiaolei, Yang Fan, Wang Linhong
Center for Plastic & Reconstructive Surgery, Department of Stomatology, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, China.
Department of Stomatology, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China.
BMC Oral Health. 2023 Oct 21;23(1):775. doi: 10.1186/s12903-023-03545-3.
The implant-abutment connection is a crucial factor in determining the long-term stability of dental implants. The use of a prosthetic index structure in the Morse taper implant-abutment connection has been proposed as a potential solution to improve the accuracy of this connection. This study aimed to provide a scoping review of the mechanical and clinical effects of the prosthetic index structure in the Morse taper implant-abutment connection.
A systematic scoping review of articles related to "dental implants," "Morse taper," and "index" was conducted using PubMed/MEDLINE, Web of Science, Cochrane, and Scopus databases, as well as a comprehensive literature search by two independent reviewers. Relevant articles were selected for analysis and discussion, with a specific focus on investigating the impact of prosthetic index structure on the mechanical and clinical aspects of Morse taper implant-abutment connections.
Finally, a total of 16 articles that met the inclusion criteria were included for data extraction and review. In vitro studies have demonstrated that the use of a prosthetic index structure in the Morse taper implant-abutment connection can affect stress distribution, biomechanical stability, and reverse torque values, which may reduce stress within cancellous bone and help limit crestal bone resorption. However, retrospective clinical studies have shown that this structure is also associated with a higher risk of mechanical complications, such as abutment fracture and abutment screw loosening.
Therefore, the clinical trade-off between preventing crestal bone resorption and mechanical complications must be carefully considered when selecting appropriate abutments. The findings suggest that this structure can improve the accuracy and stability of the implant-abutment connection, but its use should be carefully evaluated in clinical practice.
种植体与基台的连接是决定牙种植体长-term稳定性的关键因素。有人提出在莫氏锥度种植体与基台的连接中使用修复索引结构，作为提高这种连接准确性的一种潜在解决方案。本研究旨在对莫氏锥度种植体与基台连接中修复索引结构的力学和临床效果进行范围综述。
使用PubMed/MEDLINE、科学网、Cochrane和Scopus数据库，对与“牙种植体”、“莫氏锥度”和“索引”相关的文章进行系统的范围综述，并由两名独立评审员进行全面的文献检索。选择相关文章进行分析和讨论，特别关注研究修复索引结构对莫氏锥度种植体与基台连接的力学和临床方面的影响。
最后，共纳入16篇符合纳入标准的文章进行数据提取和综述。体外研究表明，在莫氏锥度种植体与基台连接中使用修复索引结构会影响应力分布、生物力学稳定性和反向扭矩值，这可能会降低松质骨内的应力，并有助于限制牙槽嵴骨吸收。然而，回顾性临床研究表明，这种结构也与较高的机械并发症风险相关，如基台骨折和基台螺钉松动。
因此，在选择合适的基台时，必须仔细考虑预防牙槽嵴骨吸收和机械并发症之间的临床权衡。研究结果表明，这种结构可以提高种植体与基台连接的准确性和稳定性，但在临床实践中应仔细评估其使用。
