Monte-Carlo Modelling of light propagation in hard dental tissues
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Brazilian Dental Journal
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In the Monte-Carlo model, we simulated the propagation of visible
light and the temperature distribution in human tooth, which reflects
the energy deposited in the tooth by the laser. As a turbid medium,
differences in absorption and scattering coefficients of the enamel
and dentine must be taken into account. These data are not completely
established in the literature in the visible range. The results
are compared with experimental data of Cu-HyBrID laser light
propagation in human molar teeth, in order to evaluate the scattering
coefficient. The Cu-HyBrID laser emits green (510 nm) and yellow
(578 nm) radiation with high output peak power (20 kW) at high
repetition rates (13.7 kHz) and there is almost no report of its use in
Dentistry. This work aims to correlate the Cu-HyBrID energy deposition
with the tooth thermal response. The tooth is predominantly a
scattering medium (absorption much lower than scattering) and
small variations in the absorption coefficient do not reveal significant
alterations in the light distribution curve. According to the simulation,
most of the laser energy is accumulated on enamel-dentine
junction and the tooth thermal response is strongly affected by the
value of the absorption coefficient, which is not yet precisely known.
Como referenciar
ZEZELL, D.M.; MIYAKAWA, W.; RIVA, R.; WATANUKI, J.T. Monte-Carlo Modelling of light propagation in hard dental tissues. Brazilian Dental Journal, v. 15, p. 131-131, 2004. Special issue. Disponível em: http://repositorio.ipen.br/handle/123456789/32750. Acesso em: 20 Mar 2026.
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