Comparison of the acid resistance of root dentin after treatment with an MIR-FEL emitting at &#955;=9.0 µm and &#955;=9.7 µm

Manabu Heya; Hiroshi Horiike; Shu Sano; Hiroaki Kumasaki; Yuichi Hashishin; Kazuhisa Sunada; Kazushi Yoshikawa; Masayoshi Inoue

doi:10.1117/12.583011

23 March 2005 Comparison of the acid resistance of root dentin after treatment with an MIR-FEL emitting at λ=9.0 μm and λ=9.7 μm

Manabu Heya, Hiroshi Horiike, Shu Sano, Hiroaki Kumasaki, Yuichi Hashishin, Kazuhisa Sunada, Kazushi Yoshikawa, Masayoshi Inoue

Author Affiliations +

Proceedings Volume 5687, Lasers in Dentistry XI; (2005) https://doi.org/10.1117/12.583011
Event: SPIE BiOS, 2005, San Jose, CA, United States

Abstract

Background and Objective: The surface modification of root dentin by mid-infrared (MIR) pulsed-laser irradiation is a potential candidate for non-invasive treatment to prevent root surface caries. The purpose of this study is to compare the relative acid resistance of root dentin treated with an MIR Free Electron Laser emitting at between 9.0 μm and 9.7 μm. Study Design/Materials and Methods: The average power density was varied over the range 7.5-51.5 W/cm2. After irradiation, the samples were immersed in a 0.1 M lactic acid solution. Acid resistance was estimated as the quantity of Ca dissolved in the solution after immersion times (tim) of 1-22 h. Results: The acid resistance of all samples increased markedly, but only until tim = ~3 h. It did not depend significantly on the laser parameters used. Conclusion: The surface modification of root dentin leads to improved acid resistance, but this only persists for a few hours and therefore represents a poor treatment for root surface caries.

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Manabu Heya, Hiroshi Horiike, Shu Sano, Hiroaki Kumasaki, Yuichi Hashishin, Kazuhisa Sunada, Kazushi Yoshikawa, and Masayoshi Inoue "Comparison of the acid resistance of root dentin after treatment with an MIR-FEL emitting at λ=9.0 μm and λ=9.7 μm", Proc. SPIE 5687, Lasers in Dentistry XI, (23 March 2005); https://doi.org/10.1117/12.583011

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