Effects of silanation time on shear bond strength between a gold alloy surface and metal bracket.
10.4041/kjod.2013.43.3.127
- Author:
Min Ho JUNG
1
;
Won Jun SHON
;
Young Seok PARK
;
Shin Hye CHUNG
Author Information
1. Department of Orthodontics, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, Korea. fortit@chol.com
- Publication Type:Original Article
- Keywords:
Bonding;
Biomaterial science
- MeSH:
Adhesives;
Alloys;
Enzyme Multiplied Immunoassay Technique;
Incisor;
Light;
Silicon Dioxide
- From:The Korean Journal of Orthodontics
2013;43(3):127-133
- CountryRepublic of Korea
- Language:English
-
Abstract:
OBJECTIVE: We aimed to investigate the effects of silanation time on the shear bond strength (SBS) of metal brackets on gold alloy in a silicoating procedure and compare the SBS of metal brackets on gold alloy and enamel. METHODS: Type III gold alloy plates were sandblasted with 30-microm silicon dioxide. Excess particles were removed with gentle air after silica coating, and silane was applied. Maxillary central-incisor metal brackets were bonded to each conditioned alloy surface with a light curing resin adhesive for 1 s, 30 s, 60 s, or 120 s after applying silane. The brackets were also bonded to 36 upper central incisors with the same adhesive. All samples were cured for 40 s with a light emitting diode curing light. The SBS was tested after 1 h and after 24 h. The adhesive remnant index (ARI) of the samples was also compared. RESULTS: The 60-s and 120-s silanation time groups showed a higher SBS than the other groups (p < 0.05). Samples tested after 24 h showed a significantly higher SBS than did the samples tested after 1 h (p < 0.05). The 1-s group showed higher ARI scores. The one-way analysis of variance and Student-Newman-Keuls test showed that the SBS values of the 60-s and 120-s silanation time groups were not significantly different from the SBS values of enamel. CONCLUSIONS: Adequate silanation time is required to produce sufficient bond strength during silicoating.
