Background. Screw-retained restorations are favored in some clinical situations such as limited inter-occlusal spaces. This study was designed to compare stresses developed in the peri-implant bone in two different types of screw-retained restorations (segmented vs. non-segmented abutment) using a finite element model. Methods. An implant, 4.1 mm in diameter and 10 mm in length, was placed in t...

Clinical evidence has shown that dental bridge (DB) misfit is more frequent than individual crown restoration misfit, and that it causes restorative failures. A comparative study of misfit profiles was performed for the most common clinical situations in mouth rehabilitation procedures with fixed restorations: gold-cast DB and porcelain metal alloy DB. Evidence from this study may lead dentists...

OBJECTIVES The purpose of this in vitro study was to evaluate misfit alterations at the implant/abutment interface of external and internal connection implant systems when subjected to cyclic loading. MATERIAL AND METHODS Standard metal crowns were fabricated for 5 groups (n=10) of implant/abutment assemblies: Group 1, external hexagon implant and UCLA cast-on premachined abutment; Group 2, i...

STATEMENT OF PROBLEM For patients with limited interocclusal space, standard height implant abutments may not be usable. Shorter abutments may be desirable. PURPOSE The purpose of this study was to determine the effect of the height of titanium abutments on the tensile strength required to dislodge zirconia copings. MATERIAL AND METHODS Two experimental groups of abutments were prepared: (1...

INTRODUCTION Differences between the tooth and implant response to load can lead to many biological and technical implications in the conditions of occlusal forces. OBJECTIVE The objective of this study was to analyze load distribution in tooth/implant-supported fixed partial dentures with the use of resilient TSA (Titan Shock Absorber, BoneCare GmbH, Augsburg, Germany) abutment and conventio...

SMIP94 Seminar Proceedings Abutment stiffnesses are determined directly from the earthquake motions recorded at the US 1011 Painter Street Overpass using a simple equilibrium-based approach without finite-element modeling of the structure or the abutment-soil systems. The calculated abutment stiffnesses, which include the effects of soil-structure interaction and nonlinear behavior of the soil,...

Statement of the problem Many partially edentulous situations are present whereby the choice between a removable and a fixed partial denture lies within the delicate balance of a single standing abutment. This abutment is called as a pier abutment. If and when a fixed fixed prosthesis is given in such a case, the retainer over the pier abutment acts as a fulcrum and invariably leads to cement f...

In this paper, the use of geotechnical centrifuge and numerical modeling techniques to investigate influence geogrid reinforcement EPS interlayer on lateral earth pressure backfill surface settlements behind gravity abutment pile-supported is reported. According principle equal strain, back structure, foundation, material, grid material were simulated, centrifugal model test for two types abutm...