Optimal irradiation condition of demineralized dentin treatment with a nanosecond pulsed laser at 5.8 &#956;m wavelength range

Katsunori Ishii; Masayuki Saiki; Tetsuya Kita; Kazushi Yoshikawa; Kenzo Yasuo; Kazuyo Yamamoto; Kunio Awazu

doi:10.1117/12.922868

8 May 2012 Optimal irradiation condition of demineralized dentin treatment with a nanosecond pulsed laser at 5.8 μm wavelength range

Katsunori Ishii, Masayuki Saiki, Tetsuya Kita, Kazushi Yoshikawa, Kenzo Yasuo, Kazuyo Yamamoto, Kunio Awazu

Author Affiliations +

Proceedings Volume 8427, Biophotonics: Photonic Solutions for Better Health Care III; 84273U (2012) https://doi.org/10.1117/12.922868
Event: SPIE Photonics Europe, 2012, Brussels, Belgium

Abstract

Conventional dental lasers have not realized a selective excavation of carious dentin. Objective of this study is to determine the optimal irradiation condition for the selective excavation by using a wavelength around 5.8 μm. A nanosecond pulsed laser with a wavelength of 5.8 μm was obtained by difference-frequency generation technique. The laser delivers 5 ns pulse width at a repetition rate of 10 Hz. 5.8 μm wavelength range, a short wavelength required high excavation energy and a long wavelength required low excavation energy to induce the selective excavation with a low thermal side effect. 5.8 μm wavelength provides a selective excavation technique for minimal intervention.

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Katsunori Ishii, Masayuki Saiki, Tetsuya Kita, Kazushi Yoshikawa, Kenzo Yasuo, Kazuyo Yamamoto, and Kunio Awazu "Optimal irradiation condition of demineralized dentin treatment with a nanosecond pulsed laser at 5.8 μm wavelength range", Proc. SPIE 8427, Biophotonics: Photonic Solutions for Better Health Care III, 84273U (8 May 2012); https://doi.org/10.1117/12.922868

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