Radiographic inspection of porosity in pure titanium dumbbell castings.

Background:   Titanium frameworks are frequently indicated for implant supported prostheses; however, voids are usually encountered inside cast titanium.

Objective:   This study aimed to confirm the efficacy of a radiographic technique for inspection of porosity in commercially pure titanium castings with different diameter.

Materials And Methods:   Sixty dumbbell rods (n=20) with a central 1.

Relining of prosthesis with auto-polymerizing hard denture reline resins: effect of post-polymerization treatment on flexural strength.

Background: It has been suggested that microwave irradiation and prosthesis immersion in hot water after its polymerization may improve mechanical and viscoelastic properties of acrylic resins.

Purpose: This study was proposed to verify the influence of microwave post-polymerization (PP) treatment over the flexural strength of thermo-polymerizing acrylic resin specimens (QC-20) relined or not with two different composition hard chairside auto-polymerizing reliners [Kooliner (K) and New Truliner (NT)].

Materials And Methods: For this study, 50 specimens of 64 x 10 x 3.