Curing depth of composite resin light cured by LED and halogen light-curing units

被引：12

作者：

Calixto, L. R. ^{[1
]}

Lima, D. M. ^{[1
]}

Queiroz, R. S. ^{[1
]}

Rastelli, A. N. S. ^{[2
]}

Bagnato, V. S. ^{[2
]}

Andrade, M. F. ^{[1
]}

机构：

[1] UNESP, Dept Restorat Dent, BR-14801903 Araraquara, SP, Brazil

[2] USP, Phys Inst Sao Carlos, BR-13560970 Sao Carlos, SP, Brazil

来源：

LASER PHYSICS | 2008年 / 18卷 / 11期

关键词：

47; 54; Fj; 62; 20; Qp; 68; 35; Gy;

D O I：

10.1134/S1054660X08110303

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The purpose of this study was to evaluate the polymerization effectiveness of a composite resin (Z-250) utilizing microhardness testing. In total, 80 samples with thicknesses of 2 and 4 mm were made, which were photoactivated by a conventional halogen light-curing unit, and light-curing units based on LED. The samples were stored in water distilled for 24 h at 37C. The Vickers microhardness was performed by the MMT-3 microhardness tester. The microhardness means obtained were as follows: G1, 72.88; G2, 69.35; G3, 67.66; G4, 69.71; G5, 70.95; G6, 75.19; G7, 72.96; and G8, 71.62. The data were submitted to an analysis of variance (ANOVA's test), adopting a significance level of 5%. The results showed that, in general, there were no statistical differences between the halogen and LED light-curing units used with the same parameters.

引用

页码：1365 / 1369

页数：5