Finite Element Analysis of OT Bridge fixed prosthesis system

The aim of this paper has been to define the behaviour of an OT Bridge fixed prosthesis system (Rhein83®). Through the use of finite element analysis, the typical load conditions of the chewing dynamics were studied, in order to highlight possible errors of inadequate use of the implant itself. These techniques highlight how knowledge of the stresses produced on the implant prosthesis becomes necessary and indispensable. The innovation in this retention system lies in the use of Seeger rings in acetal resin. The Seeger ring constitutes a revolution in the concept of anchoring the prosthesis; having a retentive function, it prevents the screws from unscrewing by taking most of the retentive load.