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Proceedings Paper

Calcium solubility of dental enamel following Er, Cr:YSGG laser irradiation
Author(s): Christian Apel; Hans-Georg Graeber; Norbert Gutknecht
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Paper Abstract

Ever since the laser was introduced in dental medicine, there has been a constant discussion about its use in caries prevention. Various studies have already illustrated the possible uses of CO2 and argon lasers in this field of dentistry. The aim of the present study was to examine the Er,Cr:YSGG laser with regard to potential in reducing the acid solubility of dental enamel. Thirty freshly extracted bovine incisor teeth were prepared for this purpose. The crowns of the teeth were covered with hard wax, leaving a standardized test area free. The test specimens were then divided into three groups. The test area was uniformly irradiated with 2.7 J/cm2 in the first test group and 6.5 J/cm2 in the second test group. The third test group was left untreated (control group). Demineralization of the teeth was performed over a period of 24 hours in acetate buffer solution (0.1 mol/l) with a pH value of 4.5 and a temperature of 37 degrees Celsius. The calcium content of the solution was subsequently determined by flame photometry. The results confirm a significantly lower calcium content in the test group exposed to radiation of 6.5 J/cm2 (p less than 0.025). Dental enamel seems to have increased acid resistance following irradiation with the Er,Cr:YSGG laser.

Paper Details

Date Published: 24 March 2000
PDF: 4 pages
Proc. SPIE 3910, Lasers in Dentistry VI, (24 March 2000); doi: 10.1117/12.380844
Show Author Affiliations
Christian Apel, Rheinisch-Westfaelische Technische Hochschule Aachen (Germany)
Hans-Georg Graeber, Rheinisch-Westfaelische Technische Hochschule Aachen (Germany)
Norbert Gutknecht, Rheinisch-Westfaelische Technische Hochschule Aachen (Germany)


Published in SPIE Proceedings Vol. 3910:
Lasers in Dentistry VI
John D. B. Featherstone; Peter Rechmann; Daniel Fried, Editor(s)

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