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Light-curing of dental resins with GaN violet laser diode: The effect of photoinitiator on mechanical strength

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Abstract

The purpose of this study was to evaluate whether a Gallium Nitride (GaN) -based violet laser diode (VLM500) could be used as a light source for light-cured dental resins. Three experimental unfilled resins containing different photoinitiators (camphorquinone, CQ; phenyl propanedione, PPD; or mono acylphosphineoxide, MAPO) were evaluated. These resins were light-cured with a VLM500 laser diode, and their ultimate micro-tensile strengths (μTS) were compared to those cured with three different LED light sources (Curenos, G-Light Prima-normal mode and G-Light Prima-PL mode). The VLM500 produced high μTS values in all three resins, and we concluded that this violet laser diode can be used as a light source for light-cured dental resin materials.

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Acknowledgements

This work was supported by a Grant-in-Aid for Young Scientists from MEXT, Japan ((B) 21791864) (A.K.). This study was also supported by Oral Health Science Center Grant HRC7 from Tokyo Dental College, and by a “High-Tech Research Center” Project for Private Universities: matching fund subsidy from MEXT, Japan, 2006-2010. We would like to thank Mr. K. Shinno and Mr. T. Nakatsuka (Shofu Inc.) for the preparation of our experimental samples.

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Authors and Affiliations

  1. Oral Health Science Center HRC7, Tokyo Dental College, Chiba, Japan

    Atsushi Kameyama

  2. Lightwave Network Products Division, SEI Optifrontier Co., Ltd., Chigasaki, Kanagawa, Japan

    Hitoshi Hatayama

  3. Division of General Dentistry, Tokyo Dental College Chiba Hospital, 1-2-2 Masago, Mihama-ku, Chiba, 261-8502, Japan

    Atsushi Kameyama, Junji Kato, Akiko Haruyama, Hiromi Teraoka, Yasuaki Takase & Masatake Tsunoda

  4. Cariology and Operative Dentistry, Department of Restorative Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan

    Junji Kato

  5. Division of Oral Implants Research and HRC7, Oral Health Science Center, Tokyo Dental College, Chiba, Japan

    Masao Yoshinari

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  1. Atsushi Kameyama
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  2. Hitoshi Hatayama
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  3. Junji Kato
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Correspondence to Atsushi Kameyama.

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Kameyama, A., Hatayama, H., Kato, J. et al. Light-curing of dental resins with GaN violet laser diode: The effect of photoinitiator on mechanical strength. Lasers Med Sci 26, 279–283 (2011). https://doi.org/10.1007/s10103-011-0896-z

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  • DOI: https://doi.org/10.1007/s10103-011-0896-z

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