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 Preparation Design on Marginal Integrity and Fracture Resistance of Endocrowns: A Systematic Review.

Endocrown restorations were introduced for endodontically treated teeth as a conservative treatment. However, data about the effect of preparation design on marginal integrity and fracture resistance of endocrowns are lacking. The purpose of this systematic review was to investigate the effect of preparation design of endocrown restorations on marginal integrity and fracture resistance.

Bacterial microleakage in endodontically treated teeth following two methods of postspace preparation at two-time intervals: An study.

Aims: The goal of this study was to analyze the bacterial microleakage following two methods (heat vs. rotary) of postspace preparation after two-time intervals (immediate vs. 1 week later).

Treatment Planning Challenges in Cases with Root Proximity: An Interdisciplinary Approach.

Root proximity is defined as a situation where the distance between the roots of adjacent teeth on radiographs is ≤1.0 mm. This important situation should be detected by clinicians before definitive restorative treatments and they should be well aware of different approaches available for the management of this situation.

Comparison of Bond Strength in the Different Class of Resin Cements to Cast and CAD/CAM Co-Cr Alloys.

Objectives: Despite the widespread use of resin cements in cementing dental restorations, their bond strength to CAD/CAM base metal alloys is not widely studied. This study aimed to evaluate the microshear bond strength (SBS) between cobalt-chrome (Co-Cr) alloys fabricated using casting or CAD/CAM methods with three types of resin cements.

Materials And Methods: Fifty Co-Cr blocks were prepared with CAD/CAM or casting technique.

Evaluation of reverse torque values and failure loads of three different abutment designs with internal connections.

Background: High percentage of biomechanical complications such as screw loosening in dental implants can be related to implant-abutment (I/A) connection properties which affect the behavior of implant assembly against functional loads in the oral cavity. The aims of the present study were to compare the reverse torque values (RTVs) and failure loads of three abutment types with internal Morse taper connection.

Materials And Methods: In this experimental study, eighteen implants (4.

Effect of fluid contamination on reverse torque values in implant-abutment connections under oral conditions.

Purpose: Implant mechanical complications, including screw loosening, can influence dental implant success. It has been shown that torque values are affected by contamination occurred in implant-abutment (I/A) interface. This study aimed to examine the effects of blood, saliva, fluoride and chlorhexidine contamination on reverse torque values (RTVs) of abutment screws in oral conditions.

Retention and Clinical Performance of Zirconia Crowns: A Comprehensive Review.

Zirconia has been used for rehabilitation of edentulous spaces approximately for a decade, and there have been several reports regarding the clinical performance and retention of zirconia crowns. Outstanding mechanical properties, biocompatibility, and excellent aesthetics make zirconia-based crowns as a popular crown among the current all-ceramic crowns in restorative dentistry. However, restoration with a zirconia crown is a challenging treatment.

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.

Comparative Evaluation of the Effect of Different Post and Core Materials on Stress Distribution in Radicular Dentin by Three-Dimensional Finite Element Analysis.

Objectives: The aim of this study was to investigate the stress distribution of different post and core materials in radicular dentin by three-dimensional finite element analysis (3D FEA).

Materials And Methods: Twelve 3D models of a maxillary central incisor were simulated in the ANSYS 5.4 software program.

Prosthetic rehabilitation of a mandibular root amputated molar using single crown.

In teeth with furcation involvement, root amputation is one of the treatment choices. A challenge which a dentist may encounter with is the prosthetic treatment of such teeth when their adjacent teeth are intact. According to the current goal of operative dentistry based on conservative treatment, it would be desirable to do in a manner resulting in minimal damage to the adjacent sound teeth.

Facilitation of Prosthetic Rehabilitation in Scleroderma: Case History Report.

Dental management of scleroderma patients is difficult and complicated because of compromised intraoral access. Physiotherapy may play an adjunctive and effective treatment role as described in a follow-up report on a previously documented case history.

A simple and effective method for prosthetic rehabilitation in scleroderma patients: a clinical report.

Treatment of patients with microstomia due to scleroderma is complicated. Limited mouth opening and altered finger shape present difficulties at every step of the prosthetic rehabilitation. This article describes the prosthetic management of an edentulous patient with severe microstomia induced by scleroderma.