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旋转切割器械对树脂-牙界面超微结构的影响：一项体内研究。

Effect of rotary cutting instruments on the resin-tooth interfacial ultra structure: An in vivo study.

作者信息

Sherawat Sudhir, Tewari Sanjay, Duhan Jigyasa, Gupta Alpa, Singla Rakesh

机构信息

Consultant, Department of Conservative Dentistry & Endodontics, Post Graduate Institute of Dental Sciences, Rohtak.

Professor and Head, Department of Conservative Dentistry & Endodontics, Post Graduate Institute of Dental Sciences, Rohtak.

出版信息

J Clin Exp Dent. 2014 Dec 1;6(5):e467-73. doi: 10.4317/jced.51362. eCollection 2014 Dec.

DOI:10.4317/jced.51362
PMID:25674310
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC4312670/
Abstract

OBJECTIVES

To evaluate the effect of cutting teeth with different types of burs at various speeds on surface topography of tooth surface and interfacial gap formation at resin-tooth interface.

MATERIAL AND METHODS

The human molars were divided into seven groups: Diamond bur in airrotor (DA) & micromotor (DM), crosscut carbide bur in airrotor (CCA) & micromotor (CCM), plain carbide bur in airrotor (CA) & micromotor (CM) and #600-grit silicon carbide paper (SiC). In five samples from each group Class II box-only cavities were restored. The occlusal surface of four teeth per group was flattened. Two out of four teeth were acid etched. Teeth were subjected for scanning electron microscopy (SEM).

RESULTS

Interfacial gap was observed in all groups with no significant difference. SEM observations revealed CA, CCA & DA were coarser than CM, CCM, DM and SiC. SEM of etched tooth surfaces revealed complete removal of amorphous smear layer in CA & CM, partial removal in CCA, CCM, DA & DM and no removal in SiC.

CONCLUSIONS

Selecting an appropriate bur and its speed may not play an important role in bonding in terms of interfacial gap formation. Variable changes were observed in surface topography with different burs before and after acid etching. Key words:Surface topography, resin-tooth interface, interfacial gap, bonding.

摘要

目的

评估使用不同类型的车针以不同速度切割牙齿对牙齿表面形貌以及树脂 - 牙齿界面处界面间隙形成的影响。

材料与方法

将人类磨牙分为七组：气涡轮机用金刚石车针（DA）和微型电机用金刚石车针（DM）、气涡轮机用交叉切割硬质合金车针（CCA）和微型电机用交叉切割硬质合金车针（CCM）、气涡轮机用普通硬质合金车针（CA）和微型电机用普通硬质合金车针（CM）以及#600粒度碳化硅砂纸（SiC）。对每组中的五个样本制备Ⅱ类仅盒状洞型并进行修复。将每组四颗牙齿的咬合面磨平。四颗牙齿中的两颗进行酸蚀处理。对牙齿进行扫描电子显微镜（SEM）观察。

结果

所有组均观察到界面间隙，且无显著差异。SEM观察显示，CA、CCA和DA比CM、CCM、DM和SiC更粗糙。酸蚀后牙齿表面的SEM显示，CA和CM组的无定形玷污层完全去除，CCA、CCM、DA和DM组部分去除，SiC组未去除。

结论

就界面间隙形成而言，选择合适车针及其速度在粘结方面可能并非起重要作用。酸蚀前后，不同车针处理的牙齿表面形貌出现了不同变化。关键词：表面形貌、树脂 - 牙齿界面、界面间隙、粘结

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ddc2/4312670/76e647f24501/jced-6-e467-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ddc2/4312670/8e2526985db6/jced-6-e467-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ddc2/4312670/3170f88df70f/jced-6-e467-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ddc2/4312670/76e647f24501/jced-6-e467-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ddc2/4312670/8e2526985db6/jced-6-e467-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ddc2/4312670/3170f88df70f/jced-6-e467-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ddc2/4312670/76e647f24501/jced-6-e467-g003.jpg

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Effect of dentine smear layer on the performance of self-etching adhesive systems: A micro-tensile bond strength study.牙本质玷污层对自酸蚀粘接系统性能的影响：微拉伸粘接强度研究。
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Effect of dentinal surface preparation on bond strength of self-etching adhesives.牙本质表面处理对自酸蚀粘结剂粘结强度的影响。
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Factors affecting microleakage of a packable resin composite: an in vitro study.影响可压实树脂复合材料微渗漏的因素：一项体外研究。
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