Influence of the thickness of mineral trioxide aggregate on sealing ability of root-end fillings in vitro

被引：59

作者：

Valois, CRA ^{[1
]}

Costa, ED ^{[1
]}

机构：

[1] Univ Brasilia, Brasilia, DF, Brazil

来源：

ORAL SURGERY ORAL MEDICINE ORAL PATHOLOGY ORAL RADIOLOGY AND ENDODONTICS | 2004年 / 97卷 / 01期

关键词：

D O I：

10.1016/S1079-2104(03)00359-7

中图分类号：

R78 [口腔科学];

学科分类号：

1003 ;

摘要：

The purpose of this study was to compare the ability of different thicknesses of mineral trioxide aggregate (MTA) to prevent apical leakage through the use of a protein-dye complex with Coomassie Brilliant Blue G. Sixty-four teeth were divided into 4 groups, then filled with MTA to depths of 1, 2, 3, or 4 mm. Two teeth served as the positive controls. Another 2 teeth served as the negative controls. Root-filled teeth were mounted in an apparatus and then challenged with protein solution. The evaluation was conduced at 24-hour intervals for 60 days. The 1-mm-thick MTA was the least effective in preventing apical leakage (P < .05). No significance difference was found between 2- and 3-mm-thick MTA (P > .05). Four-millimeter-thick MTA was significantly more effective than the other thicknesses tested (P < .05). The results of this study suggest that the thickness of 4 mm is most adequate for the use of MTA as a root-end filling material.

引用

页码：108 / 111

页数：4

共 12 条

[1]

BRADFORD MM, 1976, ANAL BIOCHEM, V72, P248, DOI 10.1016/0003-2697(76)90527-3

[2]

Carpenter PL, 1972, MICROBIOLOGY

[3] Bacterial leakage of mineral trioxide aggregate as compared with zinc-free amalgam, intermediate restorative material, and super-EBA as a root-end filling material [J].