CAJ | 학술논문

目的研究EL Cr:YSGG激光封闭牙本质小管的效果.方法选取新鲜离体的人后牙35颗,制备成70个2 mm×2mm×2 mm牙本质小片,随机分为即刻组和磨损组,两组内除阴性对照不作任何处理外,分别以Gluma脱敏剂,无水条件下0.5、1.5、2.5、3.5、W W的Er. Cr:YSGG激光处理,磨损组则再通过模拟刷牙实验后,用扫描电镜观察.结果随着Er.Cr:YSGG激光输出能量的增加,牙本质表面的碳化现象越明显,牙本质小管开口越来越少,当输出能量为4.5 W时,牙本质小管开口已不可见,即刻组与磨损组未见明显差异.而Gluma脱敏剂处理,即刻组未见牙本质小管开口开口,磨损组牙本质小管开口增多.结论 Er.Cr:YSGG激光封闭牙本质小管的作用随着输出能量的增加而逐渐增加,与Gluma脱敏剂相比,封闭效果更为持久.
목적 연구EL Cr:YSGG격광봉폐아본질소관적효과.방법 선취신선리체적인후아35과,제비성70개2 mm×2mm×2 mm아본질소편,수궤분위즉각조화마손조,량조내제음성대조불작임하처리외,분별이Gluma탈민제,무수조건하0.5、1.5、2.5、3.5、W W적Er. Cr:YSGG격광처리,마손조칙재통과모의쇄아실험후,용소묘전경관찰.결과 수착Er.Cr:YSGG격광수출능량적증가,아본질표면적탄화현상월명현,아본질소관개구월래월소,당수출능량위4.5 W시,아본질소관개구이불가견,즉각조여마손조미견명현차이.이Gluma탈민제처리,즉각조미견아본질소관개구개구,마손조아본질소관개구증다.결론 Er.Cr:YSGG격광봉폐아본질소관적작용수착수출능량적증가이축점증가,여Gluma탈민제상비,봉폐효과경위지구.
Objective To investigate the effects of sealing dentinal tubules by Er. Cr:YSGG in vitro. Methods 35 freshly extracted human premolars and molars were selected. Their dentin was exposed and made into 70 dentin cubics with hand piece, whose dimen-shion was 2 mm x 2 mm x 2 ram. These dentin eubies were randomly divided into timely group and wearing-out group. EaCh group in-cluded 35 dentin eubies, five of which were selected as negative control dentin cubics without being treated, the others were treated with Gluma desensitizer or Er. Cr: YSGG. Then, the timely group was observed by means of a scanning electron microscope, while the wear-ing-out group was treated through the imitation of brushing tooth before that. Results Er. Cr: YSGG could seal dentinal tubules but re-suited in dentin-melting. This would be improved with more export energy. The effects of sealing dentinal tubules by Er. Cr:YSGG were durable compared with those of Gluma desensitizer. Conclusions Er. Cr:YSGG could thoroughly seal dentinal tubules when its expor-ting energy was beyond 3. 5 W.