Abstract

LLAPAPASCA CRUZ, Christiam Paolo et al. Effect of therapeutic laser infrared in the bone repair post extraction in albino rats. Rev. Estomatol. Herediana [online]. 2017, vol.27, n.2, pp.101-110. ISSN 1019-4355.  http://dx.doi.org/https://doi.org/10.20453/reh.v27i2.3140.

Objectives: Determine the effect of infrared laser therapy on the bone repair post-extraction in albino rats. Material and methods: Thirty rats Albinas Holtzman were randomly divided into three groups (A, B and C) of 10 rats each according to the day of sacrifice and divided into two groups having 5 rats each (A1, A2, B1, B2, C1, C2). Incisor extracted alveolus from A1, B1 and C1 control groups were not applied infrared laser therapy and A2, B2 and C2 groups was applied infrared laser therapy AsGaAl on time and continuous. Samples were analyzed using an optical microscope by counting cell structures of alveoli. Results: After 3 days a greater number of neutrophils, lymphocytes, macrophages, fibroblasts and new blood vessels in irradiated groups was found but was only statistically significant in macrophages (p = 0.026). After 7 days an increased number of neutrophils, lymphocytes and macrophages in the control groups was found but it was statistically significant only in neutrophils and macrophages (p = 0.019 and p = 0.01 respectively). After 14 days osteoblasts were found in greater amount in the irradiated laser group being statistically significant (p=0.008; p <0.05). Conclusions: The infrared laser is effective to repair alveoli post-extracted teeth bone and to stimulate formation of cells and structures involved in healing dental alveolus.

Keywords : Bone repair; therapeutic laser; healing; alveolar bone.