体外玻璃纤维增强复合树脂修复牙体的抗折裂性能。

Ex vivo fracture resistance of teeth restored with glass and fiber reinforced composite resin.

机构信息

Department of Restorative & Prosthetic dental sciences, College of Dentistry, King Saud Bin Abdulaziz University for health sciences, Kingdom of Saudi Arabia.

Department of Conservative Dentistry & Endodontics, Chettinad Dental College & Research Institute, Tamil Nadu, India.

出版信息

J Mech Behav Biomed Mater. 2018 Jun;82:235-238. doi: 10.1016/j.jmbbm.2018.03.030. Epub 2018 Mar 29.

DOI:10.1016/j.jmbbm.2018.03.030

PMID:29627734

Abstract

OBJECTIVES

This study aims to compare the ex vivo fracture resistance of root canal treated (RCT) teeth restored with four different types of fibers under composite resin.

SUBJECTS AND METHODS

One hundred and forty extracted mandibular first molar teeth were assigned to seven groups (n = 20/group). Group 1 was the control group. In groups 2-7, endodontic access and standard Mesio-occluso-distal (MOD) cavities were prepared. Following RCT, group 2 was left unrestored. In group 3, flowable composite resin (FCR) was used to line the cavities and restored with composite resin. In groups 4,5,6 and 7, Ribbond, Everstick, Dentapreg and Bioctris fibers were inserted in flowable resin and restored respectively.

RESULTS

All the groups restored with fiber reinforced composite displayed higher fracture resistance than the group restored with only composite resin (p < 0.001). In addition, Groups restored with Everstick and Bioctris (Groups 5 and 7) showed higher fracture resistance when compared to Ribbond and Dentapreg (Groups 4 and 6).

CONCLUSION

E glass fibers demonstrated highest fracture resistance and hence can be preferred over other fiber types to reinforce RCT teeth with weakened crown structures.

摘要

目的

本研究旨在比较在复合树脂下用四种不同类型纤维修复的根管治疗（RCT）牙齿的体外抗折能力。

材料和方法

将 140 颗下颌第一磨牙随机分为 7 组（每组 n=20）。第 1 组为对照组。第 2-7 组进行牙髓腔预备和标准近中-颊舌-远中（MOD）腔预备。RCT 后，第 2 组未修复。第 3 组用流动复合树脂（FCR）衬里并以复合树脂修复。第 4、5、6 和 7 组分别用 Ribbond、Everstick、Dentapreg 和 Bioctris 纤维插入流动树脂并进行修复。