Assessment of the systemic effects of low-level laser therapy (LLLT) on thyroid hormone function in a rabbit model

被引：17
作者：
Fronza, B. [1 ]
Somacal, T. [1 ]
Mayer, L. [1 ]
de Moraes, J. F. [1 ]
de Oliveira, M. G. [1 ]
Weber, J. B. B. [1 ]
机构：
[1] Pontificia Univ Catolica Rio Grande do Sul, Dept Maxillofacial Surg, Porto Alegre, RS, Brazil
来源：
INTERNATIONAL JOURNAL OF ORAL AND MAXILLOFACIAL SURGERY | 2013年 / 42卷 / 01期
关键词：
thyroid gland; laser therapy; low level; thyroid hormones; BONE REPAIR; IRRADIATION; GLAND; DEFECTS; TISSUE;
D O I：
10.1016/j.ijom.2012.06.017
中图分类号：
R78 [口腔科学];
学科分类号：
1003 ;
摘要：
The aim of this study was to assess the effects of low-level laser therapy (LLLT) applied to a dental extraction socket on thyroid gland function in a rabbit model, based on serum triiodothyronine and thyroxine levels. Sixteen male New Zealand rabbits were randomly distributed into two groups: a control group (non-irradiated animals) and an experimental group (irradiated animals: one irradiation point in the extraction socket of the lower incisor). Animals in the experimental group were irradiated with an aluminium gallium arsenide diode laser (AlGaAs; wavelength 830 nm, 40 mW, CW laser), for 13 days, every 48 h, at a dose of 6 J/cm(2) per session, resulting in a total dose of 42 J/cm(2). Serum triiodothyronine and thyroxine levels were measured in both groups before extraction and on the last day of observation (day 15). There were no statistically significant differences between the groups in pre- and post-irradiation triiodothyronine and thyroxine values. With the irradiation protocol used in this study, LLLT did not affect thyroid function in rabbits as assessed by circulating serum triiodothyronine and thyroxine levels.
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页码：26 / 30
页数：5
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