Abstract
The platform switching concept involves the reduction of the restoration abutment diameter with respect to the diameter of the dental implant.Crestal bone loss has been documented as one of the important factors that affect the long term prognosis of a dental implant. Platform switching for maintaining peri-implant bone levels has gained popularity among implant manufacturers over the last few years. However, the assumption that the inward shifting of the implant- abutment junction may preserve crestal bone was primarily based on serendipitous finding rather than scientific evidence. The platform switching configuration led notonly to a relative decrease in stress levels compared to narrow and wide standard configurations, but also to a notable stress field shift from bone towards the implant system, potentially resulting in lower crestal bone overloading.This article shows that platform switching helps to prevent crestal bone loss after implant placement and helps obtain satisfactory aesthetic results. The purpose of this article is to review the biomechanical behavior of platform switching and its influence on bone crestel levels and on peri implant soft tissues
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