STATEMENT OF THE PROBLEM The survival of pulpless teeth restored with different post and core systems is still a controversial issue. PURPOSE This study compared the retention of two different post and core systems and also the fracture resistance of teeth restored with these systems. MATERIAL AND METHOD Eighty endodontically treated maxillary central incisors were sectioned perpendicular t...

This research was conducted to investigate the bond strength between artificial teeth and a thermoplastic denture base resin for injection molding with different surface preparations use in flexible removable partial dentures. Composite acrylic were bonded three types of resins (polyamide, polyester, polycarbonate) conventional heat-polymerized polymethyl methacrylate (PMMA) (control). The ridg...

Abstract Statement of problem: Addition zirconium oxide nanofillers to PMMA had improved the mechanical properties heat polymerized acrylic resin, but it’s effect on bond strength teeth hadn’t been evaluated yet. Purpose: The purpose study was evaluate Zirconium (ZrO2) powder with different concentrations (1.5%, 3%, 5%) resin denture base before and after thermocycling. Material methods: nanopa...

The purpose of this systematic review was to identify the different methods used measure artificial teeth wear and determine which denture (or combination tooth types) have better resistance. focused patient, intervention, comparison, outcome (PICO) question for “which available or higher resistance?” method testing measuring also evaluated as a secondary outcome. We searched OVID Medline, PubM...

BACKGROUND As per many studies endodontically treated teeth are widely considered to be more susceptible to fracture than vital teeth. Obturation strains and post placement have been a major cause of vertical root fracture. Present study was conducted to compare in vitro fracture resistance after filling with either Gutta-percha or Resilon by lateral condensation techniques in root canals. This...

STATEMENT OF THE PROBLEM Endodontic irrigants and medicaments may affect the bond strength of intracanal posts to root dentin. PURPOSE The aim of this study was to compare the effect of calcium hydroxide (Ca(OH)2) and 2% chlorhexidine gel (CHX) on bond strength of fiber post cemented with resin cement to root dentin. MATERIALS AND METHOD This in vitro experimental study was conducted on 36 ...