In vitro effect of anodization on surface roughness and bacterial adhesion to titanium abutments.

Statement Of Problem: Titanium abutments are considered the criterion standard for dental implants, yet the gray color poses esthetic concerns. Anodization has been proposed to enhance esthetics, but its effects on surface roughness and bacterial adhesion are unclear.

Purpose: The purpose of this in vitro study was to assess the effect of anodization on surface roughness and bacterial adhesion to titanium abutments.

Effect of Ferrule Location on Fracture Resistance of Maxillary Premolars: An In Vitro Study.

Objectives: The present study aimed to assess the effect of ferrule location on fracture resistance of maxillary premolars.

Materials And Methods: A total of 72 extracted human maxillary premolars were selected and randomly assigned to six groups ( = 12 in each) considering ferrule location: circumferential ferrule (CF), without ferrule (WF), buccal ferrule (BF), lingual ferrule (LF), mesial ferrule (MF), and buccal-lingual ferrule (BLF). Cast posts were cemented into the prepared post spaces.

Effect of fluid contamination on the reverse torque values of abutment screws at implant-abutment connections.

Statement Of Problem: Screw loosening is still among the most important complications of dental implants. Identifying effective factors in screw loosening plays an important role in preventing this problem.

Purpose: The purpose of this in vitro study was to assess the effect of fluid contamination on the reverse torque values (RTVs) of abutment screws at implant-abutment connections.

An Investigation of Three types of Tooth Implant Supported Fixed Prosthesis Designs with 3D Finite Element Analysis.

Objective: Tooth/implant supported fixed prostheses may present biomechanical design problems, as the implant is rigidly anchored within the alveolus, whereas the tooth is attached by the periodontal ligament to the bone allowing movement. Many clinicians prefer tooth/implant supported fixed prosthesis designs with rigid connectors. However, there are some doubts about the effect of attachment placement in different prosthesis designs.