Yaeko Ishizaka1, Toru Eguro, Toru Maeda, Hisayoshi Tanaka. 1. Department of Endodontics and Operative Dentistry, School of Dentistry at Tokyo, Nippon Dental University, Tokyo, Japan. yaeko-n@tokyo.ndu.ac.jp
Abstract
BACKGROUND AND OBJECTIVES: The effects of Er:YAG laser irradiation on dentin have not been sufficiently investigated. The purpose of this study was to investigate the effects of Er:YAG laser irradiation on dentin. STUDY DESIGN/ MATERIALS AND METHODS: After cavities were prepared using Er:YAG laser irradiation or rotary cutting instruments, histological observations of cavity-floor dentin utilizing polarizing microscopy, microradiography and light microscopy, and analysis of composition of cavity-floor dentin using Fourier-transformed (FT-IR) spectrometry were conducted. RESULTS: In the laser-treated side, a deeply stained basophilic layer was observed. The number of odontoblastic processes present was obviously less in the laser-treated side than in the bur-treated side. FT-IR analysis revealed that compared to the bur-treated side, a broad background peak at around 1,600 cm(-1) was present. CONCLUSIONS: Er:YAG laser irradiation might have denatured the organic materials of dentin. Copyright 2002 Wiley-Liss, Inc.
BACKGROUND AND OBJECTIVES: The effects of Er:YAG laser irradiation on dentin have not been sufficiently investigated. The purpose of this study was to investigate the effects of Er:YAG laser irradiation on dentin. STUDY DESIGN/ MATERIALS AND METHODS: After cavities were prepared using Er:YAG laser irradiation or rotary cutting instruments, histological observations of cavity-floor dentin utilizing polarizing microscopy, microradiography and light microscopy, and analysis of composition of cavity-floor dentin using Fourier-transformed (FT-IR) spectrometry were conducted. RESULTS: In the laser-treated side, a deeply stained basophilic layer was observed. The number of odontoblastic processes present was obviously less in the laser-treated side than in the bur-treated side. FT-IR analysis revealed that compared to the bur-treated side, a broad background peak at around 1,600 cm(-1) was present. CONCLUSIONS: Er:YAG laser irradiation might have denatured the organic materials of dentin. Copyright 2002 Wiley-Liss, Inc.
Authors: Luís Eduardo S Soares; Aldo Brugnera; Fátima A A Zanin; Ana Maria E Santo; Airton A Martin Journal: Lasers Med Sci Date: 2010-07-13 Impact factor: 3.161
Authors: Daniel Nguyen; Kwang Chang; Saba Hedayatollahnajafi; Michal Staninec; Kenneth Chan; Robert Lee; Daniel Fried Journal: J Biomed Opt Date: 2011-07 Impact factor: 3.170
Authors: Marcelo Tavares de Oliveira; Patrícia Moreira de Freitas; Carlos de Paula Eduardo; Glaucia Maria Bovi Ambrosano; Marcelo Giannini Journal: Eur J Dent Date: 2007-07