Computer simulation of surface temperature profiles during CO<sup>2</sup> laser irradiation of human enamel

Duncan Yu; Jeffrey L. Fox; Jer Hsu; G. Lynn Powell; William I. Higuchi

doi:10.1117/12.60752

1 February 1993 Computer simulation of surface temperature profiles during CO₂ laser irradiation of human enamel

Duncan Yu, Jeffrey L. Fox, Jer Hsu, G. Lynn Powell, William I. Higuchi

Author Affiliations +

Optical Engineering, Vol. 32, Issue 2, (February 1993). https://doi.org/10.1117/12.60752

Abstract

The surface temperature profiles of human enamel blocks following laser irradiation are examined using a mathematical model. A physical model for calculating this surface temperature is developed and then solved by the Laplace transform technique. The enamel block is modeled as a homogeneous cylinder in one dimension with the entiresurface exposed to laser beam irradiation. Both the photon absorption/transmission and convective heat loss are taken into consideration in the proposed model. This model allows the surface temperature to be calculated under arbitrary combinations of laser wavelength, pulse pattern, and energy density. Results indicate that (1) surface temperature depends on the wavelength, energy density, and duration of the pulse; (2) high surface temperatures (~ 300°C) can be achieved with associated inside temperature changes of less than 5°C; and (3) the surface temperature depends strongly on the environmental heat transfer coefficients. These results will facilitate the rational development of lasers as potential tools in preventive dentistry.

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Duncan Yu, Jeffrey L. Fox, Jer Hsu, G. Lynn Powell, and William I. Higuchi "Computer simulation of surface temperature profiles during CO₂ laser irradiation of human enamel," Optical Engineering 32(2), (1 February 1993). https://doi.org/10.1117/12.60752

Published: 1 February 1993

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