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In situ testing of CO2 laser on dental pulp function: Effects on microcirculation

✍ Scribed by Shimon Friedman; Mintsai Liu; Jutta Dörscher-Kim; Dr. Syngcuk Kim

Publisher
John Wiley and Sons
Year
1991
Tongue
English
Weight
624 KB
Volume
11
Category
Article
ISSN
0196-8092

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✦ Synopsis

The effect of CO, laser irradiation on pulpal microcirculation was studied in cat canines. The enamel surfaces of 4 teeth were exposed with energy densities of 304-1440J/cm2, using either a handpiece or a microslad, with a focal spot of 0.21mm and 0.33mm respectively. Pulpal blood flow (PBF) before and following lasing was recorded through the intact tooth surface by a laser Doppler flowmeter. C 0 2 laser irradiation caused an increase in PBF, which was immediate and transient. The PBF increase was higher in a large pulp than in a small pulp, and it was inversely related to the focal spot size. These findings confirm that the dental pulp is thermally affected by C 0 2 lasing of the tooth surface, however, without extensive pulp coagulation. It is concluded that the effects of laser irradiation on the pulpal microcirculation may be studied in situ by means of the presented methodology.

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