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Evaluation of the thermoplasticity of different gutta-percha cones and Resilon®
The goal of this study was to evaluate the thermoplasticity of conventional and thermoplastic gutta-percha and Resilon®, a polyester polymer-based material. Specimens with standardised dimensions were made from the following ...
Effects of thermocycling on mechanical properties of soft lining materials.
Soft linings are materials used to reduce the tension and forces of mastication, forming all or part of the fitting surface of a denture. This study evaluated the effect of thermocycling on water absorption, solubility, ...
Influência do escoamento estático (CREEP) na dureza do amálgama. Efeito de ligas e regióes de medida.
The authors studied the CREEP of 5 amalgam alloys (1 conventional and 4 with high cooper) by the application os static load of 36 MPa in 478 mm specimens, 7 days old. After CREEP test, the samples were included in acrylic ...
Periapical repair after root canal filling with different root canal sealers
The aim of this study was to evaluate periapical repair after root canal filling with different endodontic sealers. Sixty four root canals from dog ́s teeth were filled, divided into 4 groups (n=16). Root canals were ...
Characteristics of the double-torsion test to determine the R-curve of ceramic materials
Double-torsion tests were carried out on a commercial ceramic floor tile to verify whether this test is suitable for determining the R-curve of ceramics. The instantaneous crack length was obtained by means of compliance ...