奥威尔脱敏剂封闭牙本质小管的扫描电镜观察  

Dentinal Tubule Occlusion with Oravive Desensitizer:A Scanning Electron Microscopic Observation

作　　者：张晓芳[1] 狄丽莎[2] 康洪英[2] 董培[2] 

机构地区：[1]中国医科大学附属口腔医院干诊科,沈阳110002 [2]中国医科大学附属口腔医院儿童牙科,沈阳110002

出　　处：《中国医科大学学报》2011年第10期906-908,共3页Journal of China Medical University

基　　金：辽宁省科技计划项目(2009225001-2)

摘　　要：目的通过扫描电镜观察临床新型脱敏剂奥威尔对牙本质小管的封闭情况及抗洗刷能力。方法新鲜离体正畸牙24颗,随机平均分为2组(实验组和对照组),制备成为牙本质过敏标本后,分别使用奥威尔脱敏剂与极固宁对实验组与对照组暴露的牙本质表面进行处理,每组取6颗进行刷牙实验,然后劈开离体牙处理面,用扫描电镜分别对牙本质表面和剖面进行观察。结果 2种脱敏剂均在牙本质表面形成封闭,且牙本质小管内形成"树脂突"样管塞结构,奥威尔组封闭深度较深且经过刷牙实验后奥威尔显示出较好的封闭性。结论 2种脱敏剂都能取得封闭牙本质小管的效果,奥威尔较极固宁的封闭性和抗洗刷能力更佳。Objective To observe the effects of dentinal tubule occlusion and abrasion resistance with Oravive, a new desensitizer, by scanning electron microscope （SEM）. Methods 24 freshly extracted human premolars were selected and were randomly divided into two groups：experiment group and control group. Oravive desensitizer and Green OrTM desensitizer were applied respectively on the exposed dentin surfaces after the models of dentine hypersensitivity had been made. Six teeth out of each group were selected for tooth brushing test. Then the teeth were vertically cleaved into two halves. An observation was made on the surface and the section plane by scanming election microseope. Results Both of the two desensitizers could occlude the dentinal surface and ＂resin tag＂-like structures were formed to fill the tubules. The Oravive group had a greater occlusion depth and demonstrated better occluding ability after the tooth brushing test. Conclusion Both of the two desensitizers have occluding effect on tubule. Oravive performs better than Green OrTM in occluding ability and abrasion resistance.

关 键 词：牙本质过敏症 脱敏剂 扫描电镜 奥威尔 

分 类 号：R781.2[医药卫生—口腔医学]