Nd:YAG激光照射对牙周病患牙根面的影响  

Effect of Nd:YAG laser on periodontally involved root surfaces in vivo.

作　　者：曾雄群[1] 李梅[1] 谭澍良[1] 张雄[1] 

机构地区：[1]广东省口腔医院,广东广州510280

出　　处：《口腔医学纵横》2001年第2期132-134,共3页Journal of Comprehensive Stomatology

摘　　要：目的 :研究Nd :YAG激光照射对未处理过的和用超声波或手工器械刮治过的牙周病患牙根面的影响。方法 :选择因严重牙周病而须拔除的单根牙 18颗 ,随机平均分为 6组 ,在临床麻醉下分别先后作如下治疗 :超声波刮治 +激光照射 ;激光照射 +超声波刮治 ;手工器械刮治 +激光照射 ;激光照射 +手工器械刮治 ;超声波刮治 ;手工器械刮治。然后拔除患牙作扫描电镜观察。结果 :单纯用超声波或手工器械刮治过的牙根表面均有明显的涂层 ,而用激光 (2 0pps、2 .0W、3min)照射 ,无论是在刮治前还是刮治后 ,均有助于根面涂层的去除 ,但激光对牙根表面结构有不同程度的影响。结论 :先用Nd :YAG激光照射、再行龈下刮治 ,牙根表面的涂层被清除 ,而结构改变最小。Objective:This study was to evaluate the effect of Nd:YAG laser irradiation on untreated and subgingival scaled by manual or ultrasonic instrumentation periodontally involved root surfaces.Methods:18 single rooted human teeth with sever periodontitis were assigned randomly to 6 groups.These groups separately were treated in clinical anesthesia by ultrasonic scaling+irradiation,irradiation+ultrasonic scaling,manual scaling+irradiation,irradiation+ manual scaling,ultrasonic scaling,manual scaling.Then these teeth were extracted and SEM was performed.Results:It was observed that surface smear layer was present on the root surfaces of teeth that were scaled by ultrasonic or manual instrumentation only;Regardless of treatment sequence,laser irradiation for 3 minutes using energy settings of 2.0W at 20pps was able to remove the smear layer,but the root surfaces of teeth exhibited some degree of laser-induced alteration.Conclusions:Treated by laser for 3 minutes at settings of 2.0W and 20pps followed by subgingival scaling, surface smear layer could be removed and there was minimal change on the root surfaces. [

关 键 词：ND:YAG激光 扫描电镜 龈下刮治 牙周病 

分 类 号：R781.4[医药卫生—口腔医学]