Abstract
The bone changes on Nd-YAG laser irradiated wounds was observed in canine mandible by soft X-ray.
In defects by bone bur, new bone formation was observed after 2 weeks and the defects were filled with new bone nearly after 12 weeks.
In the YAG laser irradiated wounds, when the carbonized layer was removed, new bone formation was observed about 6 weeks later and filling was observed 12 weeks later than in bone bur wound. When the carbonized layer remained intact, new bone formation was observed about 14 weeks later than in bone bur wound and filling was not observed after 24 weeks yet, but defects were filled as a result of marrow ossification.
