In vitro comparison of guided versus freehand implant placement: use of a new combined TRIOS surface scanning, Implant Studio, CBCT, and stereolithographic virtually planned and guided technique.

Implant placement requires precise planning and execution to avoid collision with critical anatomical structures. Technology advances may improve placement outcomes. The purpose of this study was to trial and measure in an in vitro environment the accuracy of placing a single dental implant in the planned position using a specific guided surgery technique compared with a freehand surgery technique.

In vitro fracture resistance of endodontically treated central incisors with varying ferrule heights and configurations.

Statement Of Problem: The in vitro effectiveness of a uniform circumferential ferrule has been established in the literature; however, the effect of a nonuniform circumferential ferrule height on fracture resistance is unknown.

Purpose: This in vitro study investigated the resistance to static loading of endodontically treated teeth with uniform and nonuniform ferrule configurations.

Material And Methods: Fifty extracted intact maxillary human central incisors were randomly assigned to 1 of 5 groups: CRN, no root canal treatment (RCT), restored with a crown; RCT/CRN, no dowel/core, restored with a crown; 2 FRL, 2-mm ferrule, cast dowel/core and crown; 0.

Simple(r) soft tissue masque for individual fixed restorations.

This article describes a simplified technique for creating a soft tissue masque to aid in shaping the gingival contours of fixed restorations. The additional clinical visit that has been previously described is circumvented, and only one master cast is required.

An esthetic comparison of a metal ceramic crown and cast metal abutment with an all-ceramic crown and zirconia abutment: a clinical report.

This clinical report compares the esthetic outcome of replacing the same left maxillary central incisor with 2 types of implant-supported restorations, a zirconia abutment with a Procera crown and a custom metal abutment with metal ceramic crown. There were only subtle differences noted and both restorations yielded a satisfactory result.