Penetration of IR laser radiation in human teeth: angular distribution of light and coefficients of absorption and scattering
thumbnail.default.placeholder
Дата
2013-06
Автори
Uzunova, P.
Deneva, M.
Uzunov, Ts.
Rabadzhiyska, St.
Kisov, Hr.
Kaymakanova, N.
Dinkov, E.
Nenchev, M.
Заглавие на списанието
ISSN на списанието
Заглавие на тома
Издател
Централна медицинска библиотека - МУ София / Central medical Library - MU Sofia
Резюме
We have developed techniques and practical set-ups and have
studied comparatively the propagation of a traditional 1.06 μm laser emission and
a non-familiar 1.36 μm line of the widespread Nd:YAG laser in human dentin (pure)
samples and in combined enamel-dentin samples. The wavelength 1.36 μm can
be obtained with high energy output using some non-complicated modification of
Nd:YAG laser, as it is further shown in this work. This wavelength is of potential interest
for application in dentistry due to its known higher absorption in comparison with
a 1.06 μm line in human soft tissues. Thus, it is possible that it would also be highly
absorbed in hard dental tissues. As a result of our investigation on human pure dentin
samples and combined enamel-dentin samples, we have obtained the following parameter
estimates: 1) reflectivity of these two tissue substances; 2) the full coefficient
of the extinction and angular distribution of the intensity (in the cross-sections) of the
penetrated light in the examined dental substances; 3) as a main point, combining
the optical and calorimetric techniques, we have obtained separately the absorbed
and the diffused part of the light, and have calculated separately the coefficients of
absorption and scattering in the dentin. The study is based on in vitro examination of
fresh teeth samples from participants from Bulgaria, Sofia region.
Описание
Address for correspondence:
P. Uzunova
Faculty of Medicine
Medical University – Sofia
Ключови думи
Nd:YAG laser treatment, human tooth, dentin’s light absorption
Цитирания
P. Uzunova, M. Deneva, Ts. Uzunov, St. Rabadzhiyska, Hr. Kisov, N. Kaymakanova, E. Dinkov and M. Nenchev. Penetration of IR laser radiation in human teeth: angular distribution of light and coefficients of absorption and scattering - Acta medica bulgarica , 40, 2013, No 1, 65-75.