低刺激性直接リライニング材で裏装した加熱重合型床用レジンの比例限における曲げ強さ

Abstract

This study was conducted to investigate the transverse strength at the proportional limit of a heat-cured denture base resin relined with low stimulative direct denture reline materials. The relined specimens with three low stimulative and a conventional self-cured direct denture reline materials were tested with a three-point loading test after 1 day of water immersion. Direction of load on the specimens also was tested. As a result, all relined specimens had significantly lower transverse strength than bulk of a heat-cured denture base material. The transverse strength of specimens relined with low stimulative direct denture reline materials was significantly low as compared with specimens relined with a conventional self-cured type direct denture reline material. There was no significant difference among three low stimulative direct denture reline materials. The direction of load on the specimens did not have an effect on the transverse strength at the proportional limit.