桩道预备对3种方法充填根管封闭性能的影响  

Effect of post space preparation on the sealability of root canal filled with 3 filling methods

作　　者：李金华[1] 马长柏[2] 张雄[1] 朱国庆[1] 陈建平[1] 汤秀春[1] 

机构地区：[1]杭州市第一人民医院口腔修复科,浙江杭州310006 [2]杭州市第二人民医院口腔科,浙江杭州310015

出　　处：《上海口腔医学》2009年第6期639-642,共4页Shanghai Journal of Stomatology

基　　金：杭州市科技局社会发展专项基金(20080333B06)~~

摘　　要：目的:了解根管桩道预备对3种充填方法根充后根管封闭性的影响。方法:采集因牙周病拔除的人上颌前牙24颗,截冠后统一工作长度为16mm,分为A、B、C3组。A组用常温流动牙胶单核充填技术,GuttaFlow系统;B组用传统侧压充填技术,AH Plus糊剂;C组用垂直加压充填技术,AH Plus+BeeFill热牙胶充填系统。按各组系统充填要求,进行根管预备和根管充填。1周后,采用液体传输法,测量各样本桩道预备前根管微渗漏。随后用1-6号G钻逐步桩道预备,保留根尖4mm充填物。再测量桩道预备后的根管微渗漏。实验数值采用SPSS13.0软件包进行分析。结果:桩道预备对各实验组的影响无统计学意义(P>0.05)。桩道预备前,A组和B组之间,B组和C组间有统计学差异(P<0.05)。桩道预备后,A组和B组之间有统计学差异。A组桩道预备后的微渗漏值最小,为(4.328±2.020)×10-3μl·kPa-1·min-1。结论:桩道预备不影响3种充填方法根充后的根尖封闭性。AH Plus应用不同的充填技术进行充填,根管微渗漏表现不同。GuttaFlow所代表的常温流动牙胶单核充填技术的根管封闭性最佳。PURPOSE：To evaluate the effect of post space preparation on the sealability of canals filled with 3 filling methods.METHODS：The crowns of 24 human anterior teeth extracted for periodontal disease were removed and the working length of canal was unified to be 16 mm.The teeth were divided into 3 groups at random：group A （normal temperature flow gutta-percha single-corn technique with GuttaFlow）,group B （lateral compaction technique with AH Plus） and group C （warm vertical condensation technique with AH Plus＋ BeeFill thermoplastics system）.The root canals were prepared and filled according to different system.Microleakage of root canals of pre-post space preparation was measured with a fluid transport study one week after filling.Then the post space was prepared using 1#-6# G drill step by step,by leaving 4 mm of root canal filling material apically.Microleakage of root canals of post-dowel space preparation was mesured again.SPSS13.0 software package was used for statistical analysis.RESULTS：No difference was found between pre-post space preparation and post-dowel space preparation in each experimental group （P〉0.05）.In pre-post space preparation,significant difference was found between group A and group B,group B and group C （P〈0.05）.In postdowel space preparation,difference was found between group A and group B.Group A had the lowest microleakage （4.328± 2.020）×10^-3μl·kPa^-1·min^-1.CONCLUSIONS：The post space preparation do not effect the sealability of three root canal sealers.The sealability of canals filled with AH Plus are different when filled with different filling methods.Normal temperature flow gutta-percha single-corn technique with GuttaFlow gains the best sealability.

关 键 词：液体传输法 桩道预备 微渗漏 根管充填剂 

分 类 号：R781.05[医药卫生—口腔医学]