经内漂白并用不同方法修复的牙齿的抗折性。

Fracture resistance of teeth subjected to internal bleaching and restored with different procedures.

作者信息

Azevedo Roseli Aparecida, Silva-Sousa Yara Teresinha Correa, Souza-Gabriel Aline Evangelista, Messias Danielle Cristine Furtado, Alfredo Edson, Silva Ricardo Gariba

机构信息

Dental School, University of Ribeirão Preto, SP, Brazil.

出版信息

Braz Dent J. 2011;22(2):117-21. doi: 10.1590/s0103-64402011000200005.

DOI:10.1590/s0103-64402011000200005

PMID:21537584

Abstract

This study evaluated the fracture resistance of teeth submitted to internal bleaching and restored with different procedures. Forty maxillary incisors were endodontically treated and assigned to 4 groups (n=10): G1- restored with composite resin (CR), G2- bleached with hydrogen peroxide (HP) and restored with CR, G3- restored with CR and fiberglass posts (CR + posts) and G4- bleached and restored with CR + posts. HP was applied in the buccal surface and pulp chamber 3 times at each one of 2 sessions with an interval of 7 days between them. Additional 10 sound incisors were subjected to fracture strength test (gold standard). The fracture strength (kN) was determined in an Instron machine. Data were analyzed by ANOVA and Tukey-Kramer test (α=0.05). The untreated teeth (gold standard) showed the highest (p.

摘要

本研究评估了接受内漂白并用不同方法修复的牙齿的抗折性。40颗上颌切牙经根管治疗后分为4组（n = 10）：G1组用复合树脂（CR）修复；G2组用过氧化氢（HP）漂白后用CR修复；G3组用CR和玻璃纤维桩（CR + 桩）修复；G4组经漂白后用CR + 桩修复。在颊面和髓腔分2次、每次涂抹HP 3次，两次涂抹间隔7天。另外10颗健康切牙进行抗折强度测试（金标准）。在英斯特朗试验机上测定抗折强度（kN）。数据采用方差分析和Tukey-Kramer检验（α = 0.05）进行分析。未处理的牙齿（金标准）显示出最高的……（原文此处不完整）