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

Tatsuro Nakahara; Akio Harada; Yasutomo Yamada; Yu Odashima; Keisuke Nakamura; Ryoichi Inagaki; Taro Kanno; Keiichi Sasaki; Yoshimi Niwano

doi:10.4012/dmj.2013-047

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

Tatsuro Nakahara, Akio Harada, Yasutomo Yamada, Yu Odashima, Keisuke Nakamura, Ryoichi Inagaki, Taro Kanno, Keiichi Sasaki, Yoshimi Niwano

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	529-536
Number of pages	8
Journal	Dental materials journal
Volume	32
Issue number	4
DOIs	https://doi.org/10.4012/dmj.2013-047
Publication status	Published - 2013 Jul 31

Keywords

Acrylic resin
Denture cleaning
Flexural strength
Hydrogen peroxide
Hydroxyl radical

ASJC Scopus subject areas

Ceramics and Composites
Dentistry(all)

Access to Document

10.4012/dmj.2013-047

Cite this

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

abstract = "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.",

keywords = "Acrylic resin, Denture cleaning, Flexural strength, Hydrogen peroxide, Hydroxyl radical",

author = "Tatsuro Nakahara and Akio Harada and Yasutomo Yamada and Yu Odashima and Keisuke Nakamura and Ryoichi Inagaki and Taro Kanno and Keiichi Sasaki and Yoshimi Niwano",

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AU - Nakahara, Tatsuro

AU - Harada, Akio

AU - Yamada, Yasutomo

AU - Odashima, Yu

AU - Nakamura, Keisuke

AU - Inagaki, Ryoichi

AU - Kanno, Taro

AU - Sasaki, Keiichi

AU - Niwano, Yoshimi

PY - 2013/7/31

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AB - 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.

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KW - Flexural strength

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KW - Hydroxyl radical

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