Regular and Platform Switching: Bone Stress Analysis Varying Implant Type

Abstract

The influence of platform switching was more evident for cortical bone than for trabecular bone, mainly for the external hexagon implants. In addition, the external hexagon implants showed less stress concentration in the regular and switching platforms in comparison to the internal hexagon implants.

Platform‐Switching for Cemented Versus Screwed Fixed Dental Prostheses: Reliability and Failure Modes: An In Vitro Study

“…As an alternative technique to restore implant‐supported restorations, the “platform switching” refers to the use of an abutment with a reduced diameter in relation to the diameter of the implant platform, leading to a horizontal mismatch between the implant‐abutment interface and the peri‐implant bone. Although still subject to controversies, the concept of switching platform was developed, to try control the peri‐implant bone loss after implant insertion, and it can be seen in numerical simulations and some in vivo studies an improved maintenance of peri‐implant bone levels when platform switching is used. However, despite the promising results for bone stability of platform‐switched prosthesis, its mechanical effects on the probability of survival of ISFDP have not yet been reported …”

Main Predictors of Bone Crest Preservation With the Use of the Switching Platform.

“…The ideal for the success of an implant would be minimal or no bone loss, however, there is always some bone loss, especially after one year of masticatory function [28]. Several biological and mechanical factors influence this resorption around the implant, such as bacterial microleakage, localization of inflammatory connective tissue area, concentration of stresses in the cervical region of the implant, location of the implant / abutment junction and micromovements [38].…”

Case presentation of two patients using diagonal platform-switched double implants for maxillary single-first-molar replacement as the alternative of a single-tooth implant

“…The benefits of this shape have been reported. With platform-switched implants, the shape affects the cortical bone more than the trabecular bone [25], which contributes to the maintenance of inter-implant bone height and soft tissue level [26] and reduces bone loss [27]. The horizontal discrepancy between the outer edge of the implant platform and the implant-abutment interface influences post-restorative biologic processes [28].…”