introduction: introduction: few studies have investigated the distribution of stress around implants. in this study the distribution of stress in bones around implants was investigated in five overdenture (od) treatment designs including od-1, od-2, od-3, od-4 and od-5. materials and methods: the catia modeling software was used in order to simulate the tooth/implant model and bone. first, the ...

background and aims . peri-implantitis is a chronic progressive marginal infection which is defined as an inflammato-ry reaction affecting the tissues surrounding osseointegrated dental implants resulting in loss of supporting bone. microflora of patients with implants who are edentulous mainly consists of gram positive facultative cocci and non motile rods. pre-dominantly, streptococcus sangui...

Objective Overdenture therapy is an important option for implant rehabilitation. However, numerous reports suggest that mechanical/technical complications and failures can limit therapeutic success. The goal of this report to illustrate a digital approach design construction robust overdenture with high-esthetic value. Materials methods Beginning new denture establish esthetic parameters, 3D mo...

This preliminary in vitro study evaluated the simulated retention force of O-rings used for mini-implant overdenture treatment and the effect of mechanical fatigue corresponding to 6 months of wear. A mandibular overdenture analog device was attached to two mini-implants and underwent a tensile strength test before and after the application of insertion-removal and simulated masticatory cycles....

Traditionally, it has been advocated that implants planned for use as overdenture abutments be placed parallel to each other to obtain predictable attachment retention and complete seating of the restoration and to prevent premature wear of components. However, it is often difficult or impossible to place implants parallel to each other, and patients with implants that have already been placed ...

Purpose: Purpose of this study to evaluate the effect implant position on prosthesis movement mandibular two implant-supported overdenture under simulating biting force. Materials and methodology: 30 experimental overdentures (N=30) were made for an edentulous test model, which included artificial mucosa. Based position, samples divided into three groups (n=10) (i.e., A E, B D,in between D). Fo...

Aim: To compare new design implant-supported removable partial dentures retained with anterior fixed prosthesis a conventional locater and bar attached implant overdenture prostheses by two or four implants via photoelastic stress analysis. Materials Methods: Seven edentulous mandibuler acryclic models prepared divided into main groups; to models, subgroup separation as stated; for locator atta...