Nd :YAG激光照射后封闭治疗老年人早期根面龋的实验研究

Experimental Study on Seal Treatment of Early Root Surface Caries in Senile Patients after Irradiated by Nd:YAG Laser

目的 探讨Nd :YAG激光对老年人早期根面龋的治疗作用。方法 选择 6 0岁以上病人的早期根面龋离体牙若干颗 ,分别用不同功率Nd :YAG激光照射龋损部 ,然后用光敏窝沟封闭剂封闭 ,在扫描电镜下进行观察。结果 扫描电镜下见早期根面龋呈蜂窝状或蚕蚀状 ,Nd :YAG激光照射后呈熔融状 ,封闭后根面龋损区表面光滑。结论 Nd

Objective To study the curative effect of pulsed Nd: YAG laser on early root surface caries in senile patients.Methods Teeth with early root surface caries removed from patients aged over 60 were irradiated with different energy output and equal pulse frequency of Nd:YAG laser on the surface of early root surface carious lessions,which were sealed with light cured sealant and observed under scanning electron microscope.Results Surface layer on eraly root face caries were seen to be honeycomb or nibbled before irradiation,melted after irradiated by Nd: YAG laser,and with a smooth surface of the lesion after sealed.Conclusion Early root surface caries sealed with light cured sealant after pulsed Nd:YAG laser irradiation is a safe and effective therapy.