Er,Cr:YSGG激光在根管治疗中的应用进展

Application research progress of Er,Cr:YSGG laser in root canal therapy

铒、铬:钇钪镓石榴石(erbium,chromium:yttrium scandium gallium garnet laser,Er,Cr:YSGG)激光在牙科领域主要应用于根管治疗术、牙周疾病、龋病、牙本质过敏症、牙髓切断术等。本文从根管封闭性、灭菌、空穴效应和对根尖周组织影响四个方面对Er,Cr:YSGG激光在根管治疗中的研究进展作一综述。文献复习结果表明,Er,Cr:YSGG功率为2~4 w,20 Hz时,可以较好清除牙本质小管玷污层,从而提高材料与牙本质之间的密闭性;Er,Cr:YSGG能量产生的热效应具有灭菌作用,而牙体的光导性使冲洗液能够进入更深的组织,进一步提高灭菌效果;Er,Cr:YSGG还具有空穴效应,破坏深处溶液的表面张力,从而可以清除深层的玷污层与细菌;但是在相同功率下Er,Cr:YSGG如果使用不当,Er,Cr:YSGG产生的热效应会对根尖周组织造成一定伤害,因此,合理的Er,Cr:YSGG使用时间长短和在水冷却条件下是重要的。

Erbium,chromium:yttrium scandium gallium garnet(Er,Cr:YSGG)laser is mainly used for root canal treatment,periodontal disease,tooth decay,dentin hypersensitivity,pulp amputation,etc in the field of dentistry.This paper mainly describes the research progress of Er,Cr:YSGG laser in root canal therapy from following four aspects:root canal sealing,sterilization,cavitation effect and the effect on periapical tissue.The experimental results showed that when the operation parameters of Er,Cr:YSGG were 2 ~ 4 w and 20 Hz,it could effectively remove the stained layer of dentin tubules and improve the tightness between materials and dentin.The thermal effect produced by Er,Cr:YSGG energy has a sterilizing effect,while the optical conductivity of the tooth enables the rinse solution to enter deeper tissues,further improving the sterilizing effect.Er,Cr:YSGG also has a cavitation effect,which destroys the surface tension of the deep solution,removing the stain layer and bacteria in the deep layer.However,with the same operation parameters,if Er,Cr:YSGG is not used properly,the thermal effect of Er,Cr:YSGG will cause some damage to the periapical tissues.Therefore,reasonable use time of Er,Cr:YSGG and water cooling conditions are important.