This study assessed methods for evaluation of glass transition temperature (Tg) of autopolymerized hard direct denture reline resins using dynamic mechanical analysis and differential scanning calorimetry in addition to the dynamic mechanical properties. The Tg values of 3 different reline resins were determined using a dynamic viscoelastometer and differential scanning calorimeter, and rheolog...

Acrylic resin denture base material has been available to the dental profession for over 60 years, and although materials with superior properties have on market some time, it still remains most popular choice of clinicians. The requirement simple processing equipment low cost fabrication process are reasons its continued popularity. However, debonding acrylic teeth from resins a problem both p...

At present, complete dentures (CDs) remain the only treatment available for majority of edentulous patients. CDs are primarily fabricated using a conventional method polymethylmethacrylate (PMMA) resin. The steps involved in PMMA polymerisation directly affect quality resin prosthetic base and any error reduces retention occlusal accuracy CDs. Furthermore, when technique, residual monomer alter...

OBJECTIVE The shear bond strengths of two hard chairside reline resin materials and an auto-polymerizing denture base resin material to cast Ti and a Co-Cr alloy treated using four conditioning methods were investigated. MATERIAL AND METHODS Disk specimens (diameter 10 mm and thickness 2.5 mm) were cast from pure Ti and Co-Cr alloy. The specimens were wet-ground to a final surface finish of 6...

The addition of different polymers, such as polytetrafluorethylene (PTFE), to denture base resins could be an option to modify acrylic resin mechanical properties. This study evaluated the surface hardness, impact and flexural strength, flexural modulus and peak load of 2 acrylic resins, one subjected to a long and another subjected to a short polymerization cycle, which were prepared with or w...