Effect of different treatment methods of polymeric porcelain surface on its adhesion to metal brackets
10.12016/j.issn.2096-1456.2017.12.006
- VernacularTitle:聚合瓷表面不同处理方式对其与金属托槽粘接效果的影响
- Author:
JI Li
1
;
ZHU Zhinong
2
;
LIAN Wenwei
1
;
LI Dongfang
1
Author Information
1. Department of Prothodontics The Affiliated Stomatological Hospital of Nanchang University
2. Department of Oral and Maxillofacial Surgery The Affiliated Stomatological Hospital of Nanchang University; The Key Laboratory of Oral Biomedicine
- Publication Type:Journal Article
- Keywords:
Po lymeric porcelain;
Orthodontic;
Metal brackets;
Surface treatment;
Shear strength
- From:
Journal of Prevention and Treatment for Stomatological Diseases
2017;25(12):779-783
- CountryChina
- Language:Chinese
-
Abstract:
Objective :To analyze and discuss the effect of 4 different surface treatment methods on the bonding effect between polymerization porcelain and metal bracket s.
Methods: 45 polymer-ceramics specimens were made and 40 of them were selected and randomly divided into 5 groups according to different surface treatment methods. A group:surface without special treatment. B group: 9.6% hydrofluoric acid gel combine with bonding agent, C group: 9.6% hydrofluoric acid gel combine with silane, D group: 35％ phosphoric acid gel combine with bonding agent, E group: 35％ phosphoric acid gel combine with silane. All specimens were stored in water for 24 hours at 37 ℃ after bonding 10 min utes and then cycled 500 cycles (5 ℃ to 55 ℃). To measure the shear bonding strength and record the damage cases and the adhesive remnant index.
Results :The shear strength values were: 3.24 in the control group, 7.24 MPa in the hydrofluoric acid etching treatment group. 10.78 MPa in the hydrofluoric acid gel combined with silane group. 4.17 MPa in the phosphoric acid-only group, 6.84 MPa in the phosphoric acid gel combined with silane group. The results of each group were statistically different from those of the other four groups (P < 0.001). The rate of breakage after the removal of brackets of the hydrofluoric acid gel combined with silane group is higher than the others.
Conclusion :As to the high shear bonding strength and low rate of breakage after the removal of brackets, we recommend 35% phosphoric acid etching combining with silane coupling agent in clinical.
- Full text:聚合瓷表面不同处理方式对其与金属托槽粘接效果的影响.pdf
