酚醛树脂对根管壁封闭的影响

发布时间：2018-11-25 10:09

【摘要】：目的本文探讨酚醛树脂对根管壁的封闭作用,以期提高牙周牙髓联合病变的远期疗效。方法前牙、前磨牙、磨牙各20颗,随机分为A、B两组,每组30颗牙齿。A组根管壁用酚醛树脂封闭和B组根管壁不用酚醛树脂封闭。A、B组所有离体牙根尖4 mm区域涂布指甲油,然后将样本浸没于2%亚甲蓝至牙根10 mm处。A、B组每24小时取出棉捻观察是否有蓝染,连续观察7天。结果 (1)扫描电镜下观察根管预备后牙本质小管口呈开放状态,牙本质小管腔呈空腔状态,浸润酚醛树脂以后,牙本质小管开口被封闭,牙本质小管腔被堵塞。(2)第1天和第2天A组和B组没有显著性差异(P0.05),都没有出现渗漏。从第3天开始有显著性差异(P0.05),B组出现明显渗漏。结论酚醛树脂可渗入到牙本质小管,对根管壁有良好的封闭作用。
[Abstract]:Objective to investigate the effect of phenolic resin on the endodontic wall in order to improve the long-term effect of periodontal and pulp disease. Methods 20 anterior teeth, 20 premolars and 20 molars were randomly divided into two groups: group A (n = 30) and group B (n = 30). All teeth in group B were coated with nail polish in 4 mm area of root tip and then immersed in 2% methylene blue to root for 10 mm. In group A, cotton twisting was taken out every 24 hours to observe whether there was blue staining or not, and observed for 7 days. Results (1) after root canal preparation, the dentine tubules were observed to be open, the dentine tubules were empty, and the dentine tubules were closed after the phenolic resin was infiltrated. (2) there was no significant difference between group A and group B on day 1 and day 2 (P0.05). There was significant difference from the third day (P0.05), B group showed obvious leakage. Conclusion Phenolic resin can infiltrate into dentine canals and has a good sealing effect on root canal wall.
【作者单位】：河北医科大学第二医院口腔科;邢台医学高等专科学校口腔系;邯郸市第三医院口腔科;
【基金】：河北省2011年医学科学研究重点课题计划(20110056)
【分类号】：R781.05

【相似文献】