Influence of 2-Hydroxyethyl Methacrylate Concentration on Polymer Network of Adhesive Resin

被引：77

作者：

Collares, Fabricio Mezzomo ^{[1
]}

Ogliari, Fabrico Aulo ^{[2
]}

Zanchi, Cesar Henrique ^{[2
]}

Petzhold, Cesar Liberato ^{[3
]}

Piva, Evandro ^{[2
]}

Werner Samuel, Susana Maria ^{[1
]}

机构：

[1] Univ Fed Rio Grande do Sul, Sch Dent, Conservat Dent Dept, BR-90046900 Porto Alegre, RS, Brazil

[2] Univ Fed Pelotas, Sch Dent, Dept Operat Dent, Pelotas, RS, Brazil

[3] Univ Fed Rio Grande do Sul, Dept Organ Chem, Inst Chem, BR-90046900 Porto Alegre, RS, Brazil

来源：

JOURNAL OF ADHESIVE DENTISTRY | 2011年 / 13卷 / 02期

关键词：

adhesive systems; HEMA; real-time infrared; polymerization kinetics; water sorption; solubility; MECHANICAL-PROPERTIES; BOND STRENGTH; DENTIN; HEMA; PHOTOPOLYMERIZATION; PERMEABILITY; DEGRADATION; MONOMERS; WATER;

D O I：

10.3290/j.jad.a18781

中图分类号：

R78 [口腔科学];

学科分类号：

1003 ;

摘要：

Purpose: To evaluate the effect of variations in 2-hydroxyethyl methacrylate (HEMA) concentrations in an experimental comonomer blend on degree of conversion, water sorption, solubility, and ultimate tensile strength of adhesive resin. Materials and Methods: The effect of HEMA content (0, 15, 30, and 50%wt - control, G15, G30, and G50 groups, respectively) was tested in an experimental comonomer blend of bis-GMA, bis-EMA, TEG-DMA, and HEMA. The degree of conversion, polymerization rate, ultimate tensile strength, water sorption, and solubility of the adhesive resin blends were determined. Results: At 40 s of light activation time, groups G30 and G50 showed a decrease of 30% and 61%, respectively, in degree of conversion compared to control. Water sorption and solubility differed for all groups, and was statistically higher in G50. For ultimate tensile strength, the control and G15 groups showed statistically higher values than the other groups (p < 0.05). Conclusion: Higher HEMA content increases dental adhesive resin degradation.

引用

页码：125 / 129

页数：5

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