Effect of pre-processing surface treatments of acrylic teeth on bonding to the denture base

被引:38
作者
Chung, K. -H. [1 ]
Chung, C. Y. [2 ,3 ]
Chung, C. Y. [2 ,3 ]
Chan, D. C. N. [4 ]
机构
[1] Univ Washington, Dept Restorat Dent, Sch Dent, Seattle, WA 98195 USA
[2] Texas Womans Univ, Houston, TX USA
[3] Univ Texas Austin, Austin, TX 78712 USA
[4] Med Coll Georgia, Dept Oral Rehabil, Div Operat Dent, Augusta, GA 30912 USA
关键词
acrylic denture teeth; denture base resin; bonding strength; heat polymerization; microwave polymerization;
D O I
10.1111/j.1365-2842.2007.01779.x
中图分类号
R78 [口腔科学];
学科分类号
1003 [口腔医学];
摘要
The aim of this study was to examine the bond strength between acrylic teeth after various surface treatments and processing with either a heat- or microwave-polymerized denture base material. Specimens were prepared and tested according to the methods described in American National Standard/American Dental Association Specification No.15 (Synthetic Polymer Teeth) using a special assembly. Three brands of acrylic teeth were used with the following treatments: control (no treatment), grinding and grinding plus sandblasting. Treatment groups were further divided into two denture base processing subgroups: heat-polymerized and microwave-polymerized methods. Denture base processing to the acrylic teeth was performed according to the manufacturer's recommendations. Bond strength test was performed using a universal testing machine with five specimens and each specimen is composed of six anterior teeth per experimental group. Data were analysed using a three-way ANOVA and the Scheffe'F-test post hoc pair wise comparison at the 95% significance level. The mean bond strength values ranged from 33.1 +/- 4.1 to 51.6 +/- 2.5 MPa. The bond strength values of sandblasted surfaces were significantly higher than those of the ground surface and the control (P < 0.05). Combined (acrylic tooth and denture base resin) cohesive failures were disclosed in all tested samples. Acrylic tooth surface pre-processed surface treatment with grinding plus sandblasting and processed with a heat-polymerized denture base provided the greatest bond strength between acrylic tooth and denture base.
引用
收藏
页码:268 / 275
页数:8
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