本文以Nd—YAG、CO_2、Ar~+三种激光照射大鼠舌粘膜,三种激光波长不同,所引起粘膜组织病理改变却基本相同,只是受损组织深度不同。其病理改变开始为粘膜上皮坏死,上皮下疱形成,继而出现溃疡和组织坏死,形成由表及里的四层改变,即坏死组织层、炎症细胞渗出层。浆液渗出层和肉芽组织层。后则为炎症逐渐吸收、组织增生,损伤愈合。 This article uses Nd-YAG, CO2, Ar~+ three kinds of laser irradiation of rat tongue mucosa, the three laser wavelengths are different, causing mucosal pathological changes are basically the same, but the depth of damaged tissue is different. The pathological changes began with mucosal epithelial necrosis, subepithelial hernia formation, followed by ulceration and tissue necrosis, the formation of four changes in the table and the inside, namely, necrotic tissue layer, inflammatory cell exudate layer. Slurry exudate layer and granulation tissue layer. After that, the inflammation gradually absorbed, the tissue hyperplasia, and the injury healed.