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Lasers Med Sci. 2011 May;26(3):279-83. doi: 10.1007/s10103-011-0896-z. Epub 2011 Feb 23.

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

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


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.

[Indexed for MEDLINE]

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