Abstract: A total of 12 male Wistar strain rats at 6 weeks old were used randomly for the study. Twelve rats were divided into 2 groups of 6 rats each to form the laser therapy and nonirradiation groups. To measure the amount of tooth extension, two points were identified in front of the right lower incisor in all rats. The measurements were performed between the gingival edge and the edge of the cutted incisal part of the tooth with a caliper. The tooth was cutted approximately until, the half. For the low-level laser source, a GaAlAs laser was used. The first dose of laser irradiation was performed just after the preparation of the teeth and then successive applications were realized at same time following two next days. In the laser application group, the averages of the teeth length were 3.1, 4.0, 5.2 and 7.08 at 0-3 days, respectively. In nonirradiation group these values were 3.11, 3.86, 4.65 and 5.7 at 0-3 days, respectively. To compare the differences of the measurements in each group the Wilcoxon signed ranks test was performed. The hypothesis is that LLLT may enhance tooth extension in rats. For this reason, in the presented study, the effect of LLLT was evaluated quantitatively.
Kamuran Pamuk, Kemal Murat Okcu, Metin Sencimen, Z. Kadir Saritas, Nejdet Dogan and Musa Korkmaz, 2009. Investigation of the Effect of Low-Level Laser Therapy on Tooth Extension in Wistar Rats: A Preliminary Study. Journal of Animal and Veterinary Advances, 8: 2055-2057.