Biomechanical Complications of Implant-Supported Fixed Single Crowns in the Posterior Area: A Systematic Review
Abstract:
Purpose: The purpose of this systematic review is to identify and explain the biological and mechanical complications of the different types of implant-supported fixed crowns. Material and methods: A database search on PUBMED, COCHRANE and EBSCO were conducted by 2 reviewers for valid articles until Mai 17 2023. The search was led by PICOS formula. The main question was “what are the biomechanical complications pertaining to implant-supported posterior crowns and what caused them? ”key-words, inclusion and exclusion criteria were well defined. Results: The preliminary search came up with 108 articles by use of a Boolean-equation. After applying the exclusion criteria, we ended up with 7 full text studies verifying all inclusion criteria. Biological complications percentage reached 11.25%, as for mechanical complications rate it was 11.63%. The study showed a variety of types of biomechanical complications such as bone loss (100%), peri-implant mucositis (16.18%), loss of retention (10.49%), contact points deviation (17.75%), veneering chipping (2.68%). Resin-modified ceramic crowns were the most susceptible to restoration complication, the same a screw-retained Implant-supported posterior crowns. Conclusion: Biomechanical complications can pose challenges to the long-term stability and function of implant-supported posterior crowns. Further research and advancements in implant design and materials will continue to contribute to reducing biomechanical complications and enhancing the success of implant dentistry
