不同牙体修复材料与Ⅱ类洞龈壁适合性的显微CT观察

发布时间：2018-03-18 00:15

本文选题：牙科材料　切入点：牙修复体　出处：《北京大学学报(医学版)》2015年02期 　论文类型：期刊论文

【摘要】：目的:使用显微CT观察不同牙体修复材料用于Ⅱ类洞充填修复时材料与龈壁的适合性。方法:选择人离体前磨牙18颗,制备邻牙合面Ⅱ类洞,随机分为6组进行分层充填。使用6种材料作为龈壁层材料,包括4种注射式充填材料:Beautifil Flow Plus F00(F00)、Beautifil Flow F10(F10)、Filtek Z350 Flowable(Z350F)和FujiⅡLC CAPSULE(Fuji),以及2种膏体状填压式充填材料:BeautifilⅡ(BF)和Filtek Z350(Z350)。将充填修复后离体牙进行显微CT扫描和三维重建,分析龈壁层充填体-牙齿界面孔隙体积和分布。孔隙体积采用Jonckheere-Terpstra非参检验方法进行统计分析。结果:龈壁层充填体-牙齿界面孔隙体积(mm3)由小到大依次为:Z350F(0.000 15)、F10(0.000 39)、F00(0.012)、Fuji(0.070)、Z350(0.16)和BF(0.20),Z350F/F10组与Fuji/Z350/BF组差异具有统计学意义(P0.05)。孔隙分布结果显示,绝大多数孔隙位于窝洞的点线角。结论:龈壁层充填体-牙齿界面孔隙主要位于窝洞点线角,高流动注射式充填材料可以有效减少界面孔隙的产生。
[Abstract]:Objective: using micro CT to observe the effects of different dental restorative materials used for class II restorations when material and gingival wall. Methods: isolated human premolars 18 teeth, preparation of occlusal amalgam, were randomly divided into 6 groups by stratified filling. Using 6 kinds of materials as the gingival wall layer materials, including 4 kinds of injection type filling material: Beautifil Flow Plus F00 (F00), Beautifil Flow F10 (F10), Filtek Z350 Flowable (Z350F) and Fuji II LC CAPSULE (Fuji), and 2 kinds of paste filling pressure filling material: Beautifil II (BF) and Filtek Z350 (Z350). After the restoration of isolated teeth micro CT scan and 3D reconstruction of gingival wall layer filling teeth interface pore volume and distribution. Jonckheere-Terpstra nonparametric test was used for statistical analysis. Results: the pore volume of gingival wall layer filling teeth interface pore volume (mm3) in order to: Z350F (0 15), F10 (0.00039), F00 (0.012), Fuji (0.070), Z350 (0.16) and BF (0.20), the difference was statistically significant between group Fuji/Z350/BF and group Z350F/F10 (P0.05). The pore distribution shows that the vast majority of pores in line cavity angle. Conclusion: the gingival wall layer filling body - tooth interface pore mainly located in the cavity line angle, high flow injection type filling material can effectively reduce the interfacial pores generated.

【作者单位】：北京大学口腔医学院·口腔医院牙体牙髓科;
【基金】：北京市科学技术委员会科技计划项目(Z141100000514016)资助~~
【分类号】：R783.3

【共引文献】