Abstract
Background: Dental implants have become the most common restorative technique for rehabilitation of edentulism. The stability of the crestal bone is believed to be a key factor for maintaining stable soft tissue dimension with direct inuence on aesthetics. The concept of “platform switching” explains the use of a smaller-diameter abutment on a larger-diameter implant collar. This may decrease the risk of bone loss around implants. Aim: To analyze the effect of platform switching on alveolar crestal bone level. Materials and methods: An electronic database search for randomized controlled trials, clinical trials, prospective studies and retrospective studies published in peer-reviewed Journals in English was conducted from the following databases: PubMed, EBSCOhost, EMBASE and Google Scholar. Results: A total 248 articles were identied on electronic database. Eleven studies were included for the qualitative synthesis. Out of the 11 studies, 8 were randomized controlled clinical trials, 1 was a clinical trial, 1 was a prospective study and 1 was a retrospective study. All the included studies suggested that platform switching has signicant effect on alveolar crestal bone level. Conclusion: The platform-switched implants remained stable over the course of 10 years and had an overall survival rate of 97.1%. From the present systematic review, based on the articles that were included in this study, it can be concluded that platform switching technique has signicant reduction in alveolar crestal bone level as compared to platform matched technique.
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