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Proceedings Paper

Histological and ultrastructural effect of an Nd:YAG pulsed laser beam on dental hard tissue and pulp
Author(s): Costantino Vignato; Giuseppe Vignato; Antonella Nardelli; Arianna Baldan; Pier Nicola Mason
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Paper Abstract

The purpose of this study was to determine histological and ultrastructural modifications produced by an Nd:YAG pulsed laser beam after an in vivo exposure of human molars. Using a Nd:YAG pulsed laser beam delivered by a 600 micrometers optical fiber and concurrent air and water cooling spray, 14 human third molars with artificial first class cavities were exposed at different power levels (6, 7, and 8 W). All the teeth were extracted at different time periods between 10 and 25 days and prepared for histological examination. The results of the histological examination showed no evidence of degeneration or necrosis of the pulpar tissue. Analysis of the dentinal surfaces after exposure demonstrated that the dentinal tubules are completely closed due to the melted dentin. In conclusion a Nd:YAG pulsed laser beam with an air and water cooling spray is safe for treatments of class I decay and no necrosis or degeneration of the pulp was found for laser powers of 6, 7, and 8 W.

Paper Details

Date Published: 7 September 1994
PDF: 9 pages
Proc. SPIE 2128, Laser Surgery: Advanced Characterization, Therapeutics, and Systems IV, (7 September 1994); doi: 10.1117/12.184912
Show Author Affiliations
Costantino Vignato, Studio Dentistico Associato (Italy)
Giuseppe Vignato, Studio Dentistico Associato (Italy)
Antonella Nardelli, Studio Dentistico Associato (Italy)
Arianna Baldan, Studio Dentistico Associato (Italy)
Pier Nicola Mason, Univ. di Padova (Italy)

Published in SPIE Proceedings Vol. 2128:
Laser Surgery: Advanced Characterization, Therapeutics, and Systems IV
R. Rox Anderson M.D.; R. Rox Anderson M.D., Editor(s)

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