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Proceedings Paper

Visualization of root canal dentin structure irradiated by Er:YAG laser using confocal laser scanning microscopy
Author(s): Arata Ebihara; Boris Majaron; Lih-Huei L. Liaw; Tatiana B. Krasieva; Petra B. B. Wilder-Smith
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Paper Abstract

The aim of this study was to determine the effects of varying parameters of Er:YAG laser irradiation with and without water spray cooling on root canal dentin in vitro. After horizontally removing tooth crowns from extracted human teeth, roots were axially sectioned into thin slices, exposing the root canal surface. An Er:YAG laser delivered 10-30 J/cm2 into a 0.4-mm diameter laser spot on the root canal surface .Single pulses of different lengths were applied with and without water spray cooling/irrigation, and sequences of 3 pulses at a repetition rate of 30 Hz were applied at selected pulse parameters. The irradiated samples were investigated using confocal laser scanning microscopy (CLSM). At most irradiation conditions, root canal dentin surface was ablated. 3D images from CLSM revealed that the cavity walls were not smooth. Depths, diameters and micro surfaces of the cavities revealed a significant different between the cavities.

Paper Details

Date Published: 27 April 2001
PDF: 8 pages
Proc. SPIE 4249, Lasers in Dentistry VII, (27 April 2001); doi: 10.1117/12.424510
Show Author Affiliations
Arata Ebihara, Beckman Laser Institute and Medical Clinic and Tokyo Medical and Dental Univ. (Japan)
Boris Majaron, Beckman Laser Institute and Medical Clinic and Jozef Stefan Institute (Slovenia)
Lih-Huei L. Liaw, Beckman Laser Institute and Medical Clinic (United States)
Tatiana B. Krasieva, Beckman Laser Institute and Medical Clinic (United States)
Petra B. B. Wilder-Smith, Beckman Laser Institute and Medical Clinic (United States)


Published in SPIE Proceedings Vol. 4249:
Lasers in Dentistry VII
Peter Rechmann; Daniel Fried; Thomas Hennig, Editor(s)

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