脉冲 Nd：YAG 激光辅助治疗中重度慢性牙周炎疗效分析

摘要

Objective:To investigate the effects of pulsed neodymium yttrium aluminium garnet(Nd:YAG)laser in combination with scaling and root planing(SRP)in the treatment of moderate and server chronic periodontitis.Methods:30 patients with moderate or server chronic periodontitis were included in this split-mouth single blind randomized controlled clinical trial.The contralateral teeth with chronic periodontitis in the patients were randomly divided into 2 groups(n =55)and treated by SRP(group A)and SRP +Laser (group B)respectively.At base line,3 and 6 months after treatment.The clinical parameters including periodontal probing depth (PPD),vertical clinical attachment loss(CAL-V),bleeding index(BI)and CBCT data including alveolar bone density(ABD)and height(ABH)were measured.Results:3 months after treatment,the PPD and BI of group B was lower than those of group A(P <0.05).The gained CAL-V of group B was higher than that of group A(P <0.05).6 months after treatment,group B showed higher CAL-V and ABD at the mesial and distal directions than group A(P <0.05).Conclusion:SRP combined Nd:YAG laser is more ef-fective than SRP in the treatment of moderate and server chronic periodontitis.%目的：观察脉冲 Nd：YAG 激光辅助治疗中重度慢性牙周炎后牙槽骨变化及牙周附着水平的改善效果。方法：30名中、重度慢性牙周炎患者的同颌对称同名患牙随机分为对照组（超声龈下刮治＋根面平整术）和实验组（超声龈下刮治＋根面平整术＋激光治疗），每组55颗患牙。临床检查患牙治疗前与治疗后3、6个月牙周袋探诊深度（PPD）、垂直向附着丧失（CAL-V）、出血指数（BI）、CBCT 检查牙槽骨骨密度（ABD）和高度值（ABH）的改变。结果：术后3个月，实验组 PPD、BI 低于对照组（P ＜0．05），实验组 CAL-V 获得高于对照组（P ＜0．05）。术后6个月，实验组 CAL-V 获得、近远中位点 ABD 高于对照组（P＜0．05）。结论：脉冲 Nd：YAG 激光辅助龈下刮治根面平整术治疗慢性中重度牙周炎，效果优于龈下刮治根面平整术。