CAJ | 학술논문

目的观察铒铬钇钪镓石榴石(Er,Cr∶YSGG)激光无水条件下照射牙本质的表面形态,探讨此激光可能的临床应用.方法人离体前磨牙制备1.5 mm厚的牙本质片11张.1张未做任何处理,作为对照组;其余10张分为5组,无水条件下行Er,Cr∶YSGG激光照射,输出功率分别为1、2、3、4、6W,常规制SEM标本,扫描电镜观察牙本质表面的形态变化.结果无水Er,Cr∶YSGG激光照射后,随着输出功率的增加,牙本质表面可见小管管腔缩窄,部分小管封闭;3～6W激光照射后牙本质表面出现微裂、炭化等热损伤改变.结论 1～2 W无水Er,Cr∶YSGG激光照射时可起到较为理想而安全的缩窄和封闭牙本质小管的作用,在临床上有望用于治疗牙本质过敏症.
목적 관찰이락을항가석류석(Er,Cr∶YSGG)격광무수조건하조사아본질적표면형태,탐토차격광가능적림상응용.방법 인리체전마아제비1.5 mm후적아본질편11장.1장미주임하처리,작위대조조;기여10장분위5조,무수조건하행Er,Cr∶YSGG격광조사,수출공솔분별위1、2、3、4、6W,상규제SEM표본,소묘전경관찰아본질표면적형태변화.결과 무수Er,Cr∶YSGG격광조사후,수착수출공솔적증가,아본질표면가견소관관강축착,부분소관봉폐;3～6W격광조사후아본질표면출현미렬、탄화등열손상개변.결론 1～2 W무수Er,Cr∶YSGG격광조사시가기도교위이상이안전적축착화봉폐아본질소관적작용,재림상상유망용우치료아본질과민증.
Objective To observe the surface morphology of dentin irradiated by Er,Cr∶YSGG laser under anhydrous conditions and discuss the possible clinical applications of the laser.Methods 11 freshly extracted specimens (approximately 1.5 mm thick) taken from the first premolars were selected.One was regarded as the control group without any treatment and the remaining ten were divided into 5 groups whose dentin surface was irradiated by Er,Cr∶ YSGG laser with different energy (1,2,3,4,6 W) under anhydrous condition.The specimens were routinely prepared for electron microscopic scanning observation.Results As the output power increased with Er,Cr∶YSGG laser irradiation,the dentin surface was observed of the constriction of tubular lumen,and part of the tubules closed.The dentin surfaces with 3 ～6 W laser irradiation were observed thermal injury alters such as micro crack and carbonization.Conclusion 1 ～2 W anhydrous Er,Cr:YSGG laser irradiation play a more ideal and safe constriction and sealing role to dentinal tubules,and the laser is expected to be used for the treatment of dentin hypersensitivity.