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

Journal Article · Mon Dec 31 23:00:00 EST 1990 · Lasers in Surgery and Medicine; (United States)

DOI:https://doi.org/10.1002/lsm.1900110403· OSTI ID:5010392

Friedman, S; Liu, M; Doerscher-Kim, J K; Kim, S ^[1]

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1. Department of Endodontics, Hadassah-Hebrew University School of Dental Medicine, Jerusalem (Israel)

The effect of CO2 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. CO2 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 CO2 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.

• OSTI ID: 5010392
• Journal Information: Lasers in Surgery and Medicine; (United States), Journal Name: Lasers in Surgery and Medicine; (United States) Vol. 11:4; ISSN 0196-8092; ISSN LSMED
• Country of Publication: United States
• Language: English

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