2种铒激光对牙本质小管封闭的体外研究  

Occluding effect of two kinds of Er laser on dentinal tubules: An in vitro study

作　　者：王婕[1] 董菁杰 丁亚娟[1] 王梦婷[1] 陈亚明[1] 

机构地区：[1]南京医科大学口腔疾病研究江苏省重点实验室.南京医科大学附属口腔医院综合科,210029

出　　处：《实用口腔医学杂志》2016年第4期537-541,共5页Journal of Practical Stomatology

基　　金：江苏高校优势学科建设工程资助项目(编号:2014-037);南京医科大学口腔医学院横向合作项目(编号:22011001)

摘　　要：目的:研究2种铒激光对牙本质小管封闭的效果。方法:制取27个离体牙的牙本质盘,用0.5 mol/L的EDTA脱矿使得牙本质小管开放,按处理方法不同随机分为3组(n=9):空白对照组(A),Er:YAG激光组(B),Er,Cr:YSGG激光组(C)。通过扫描电镜(SEM)观察比较3组牙本质小管的封闭效果。结果:SEM观察发现B、C组均有明显封闭物堵塞牙本质小管口。小管面积暴露率A、B、C组分别为(33.610±7.545)%、(4.186±0.723)%、(3.798%±0.843)%(3组间比较,P<0.01;B、C组间比较,P>0.05)。结论:2种铒激光均能较好的封闭牙本质小管,两者的封闭效果无显著差异。Objective： To evaluate the occluding effect of 2 kinds of Er laser on dentinal tubules. Methods： 27 dentine discs were prepared,etched with 0. 5 mol / L EDTA and then divided into 3 groups（ n = 9）. The samples in group A without treatment were used as the controls,in group B treated with Er： YAG laser irradiation and in group C treated with Er,Cr： YSGG laser irradiation. The occluding effect was examined by scanning electron microscopy（ SEM）. Results： Micrographs of SEM showed obvious occluding effect in group B and C. The dentinal tubule exposure rates of group A,B and C were 33. 610% ± 7. 545%,4. 186% ± 0. 723% and 3. 798% ±0. 843% respectively（ among 3 groups,P〈0. 01; B vs C,P〉0. 05）. Conclusion： The 2 kinds of Er laser can block dentinal tubules.

关 键 词：ER:YAG激光 Er Cr:YSGG激光 牙本质小管 封闭 扫描电镜 

分 类 号：R781.2[医药卫生—口腔医学]