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...

X-ray micro-tomography (micro-CT) is a miniaturized form of conventional computed axial tomography (CAT) able to investigate small radio-opaque objects at a-few-microns high resolution, in a non-destructive, non-invasive, and tri-dimensional way. Compared to traditional optical and electron microscopy techniques, which provide two-dimensional images, this innovative investigation technology ena...

PURPOSE This study aimed to evaluate the accuracy of digitizing dental impressions of abutment teeth using a white light scanner and to compare the findings among teeth types. MATERIALS AND METHODS To assess precision, impressions of the canine, premolar, and molar prepared to receive all-ceramic crowns were repeatedly scanned to obtain five sets of 3-D data (STL files). Point clouds were com...

OBJECTIVES This study was undertaken to characterize the mechanical response of bare (as-received) and single-layer ceramized zirconia abutments with both internal and external connections that have been developed to enhanced aesthetic restorations. MATERIAL AND METHODS Sixteen zirconia implant abutments (ZiReal Post®, Biomet 3i, USA) with internal and external connections have been analyzed....

PURPOSE The aim of this clinical research on implant-supported restorations is to analyze, through spectrophotometric digital technology, the influence of the abutment material on the color of the peri-implant soft tissue. MATERIAL AND METHODS Twenty patients received an endosseous dental implant in the anterior maxilla. At the time of each definitive prosthesis delivery, an all-ceramic crown...

Nowadays the problem of optimal restorative prosthetics on dental implants is paramount importance for solving a number clinically difficult cases and extends beyond alternative treatment at complete partial adentia both upper lower jaws. An essential factor here understanding biomechanical behaviour implant-abutment interface, because an interface simulates biophysical natural teeth ensures lo...

Introduction: The surgical stent is used to transfer the positional information in the diagnostic arrangement to the patient for accurate surgical placement of implants, which helps the practitioners place the implants in an optimal location. Aim: This case presentation describes the use of the surgical stent as a radiographic template, surgical stent, and the impression jig. Materials and Meth...

ABSTRACT Objective: The aim of this study was to compare the stress distribution in internal tapered connection implants with different adaptation geometries submitted oblique load simulation using Finite Element Analysis (FEA) method. Methods: Three implant-abutment assemblies were modeled by varying only diameter abutment body cone region. dimensions 4.0 mm and 13 length. Oblique loads 210 N ...