Journal of implantology and applied sciences ISSN:2765-7833(Print) 2765-7841(Online) 대한구강악안면임플란트학회지

Purpose: The purpose of this study was to irradiate the lingual sides of adult dogs with an Er:YAG or Nd:YAG laser and to compare their healing processes by histological evaluation. Materials and Methods: Both lingual sides of adults dogs were resected with Er:YAG laseror Nd:YAG laser by varying the output to be 1.5 W or 3 W. The animals were sacrificed after 1 week or 2 weeks, and tissues were obtained and examined histologically both macroscopically and under a light microscope. Results: The following results were obtained: 1. No significant macroscopic differences between the groups irradiated with Er:YAG and Nd:YAG lasers were detected after 1 week or 2 weeks, and similar wound healing features were observed. 2. In the Er:YAG laser group, in comparison with the findings after 1 week, the histological defect size after 2 weeks was observed to be noticeably smaller. 3. The Er:YAG laser group showed narrower distributions of defect size, fibroblast proliferative activity, inflammation, and neovascularization than the Nd:YAG lasergroup, although the differences were not statistically significant. Based on the above results, resections performed with an Er:YAG laser showed good healing features comparable to those observed for resections performed with a Nd:YAG laser, which has been used primarily for incisions in soft tissues. Conclusion: Thus, an Er:YAG laser may also be useful for the incision of soft tissues.