Influence of a new denture cleaning technique based on photolysis of H2O2 on the mechanical properties and color change of acrylic denture base resin

被引：7

作者：

Nakahara, Tatsuro ^{[1
]}

Harada, Akio ^{[1
]}

Yamada, Yasutomo ^{[1
]}

Odashima, Yu ^{[1
]}

Nakamura, Keisuke ^{[2
]}

Inagaki, Ryoichi ^{[1
]}

Kanno, Taro ^{[1
]}

Sasaki, Keiichi ^{[1
]}

Niwano, Yoshimi ^{[2
]}

机构：

[1] Tohoku Univ, Grad Sch Dent, Div Fixed Prosthodont, Aoba Ku, Sendai, Miyagi 9808575, Japan

[2] Tohoku Univ, Grad Sch Dent, Lab Redox Regulat, Aoba Ku, Sendai, Miyagi 9808575, Japan

来源：

DENTAL MATERIALS JOURNAL | 2013年 / 32卷 / 04期

关键词：

Denture cleaning; Hydroxyl radical; Hydrogen peroxide; Acrylic resin; Flexural strength; CHEMICAL DISINFECTANTS; TRANSVERSE STRENGTH; STABILITY; STOMATITIS; ETIOLOGY; SYSTEM;

D O I：

10.4012/dmj.2013-047

中图分类号：

R78 [口腔科学];

学科分类号：

1003 ;

摘要：

The purpose of this study was to evaluate the influence of a disinfection technique based on photolysis of H2O2 on the mechanical properties and color change of acrylic denture base resin. Resin specimens were immersed in 1 M H2O2 irradiated with light-emitting diode (LED) light at 400 nm for 1. week. The immersion duration of 1 week (168 h) corresponded to performing approximately 500 times of 20-min cleaning. Hydroxyl radicals are potent oxidants and they were generated via the photolysis of H2O2. Oxidative damage caused by these radicals included reduced flexural strength and altered color for the acrylic resin. Nonetheless, the degraded flexural strength and altered color of acrylic resin after 500 times of cleaning in the disinfection system would be within clinically acceptable levels.

引用

页码：529 / 536

页数：8

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