Comparison of bond strengths of ceramic brackets bonded to zirconia surfaces using different zirconia primers and a universal adhesive
이지연, Ahn Jae-chan, An Sang-In, 박정원,
소속 상세정보
이지연 ( Lee Ji-Yeon ) - National Health Insurance Service Ilsan Hospital Department of Orthodontics
( Ahn Jae-chan ) - National Health Insurance Service Ilsan Hospital Department of Orthodontics
( An Sang-In ) - National Health Insurance Service Ilsan Hospital Department of Orthodontics
박정원 ( Park Jeong-Won ) - Yonsei University College of Dentistry Department of Conservative Dentistry
Abstract
Objectives: The aim of this study is to compare the shear bond strengths of ceramic brackets bonded to zirconia surfaces using different zirconia primers and universal adhesive.
Materials and Methods: Fifty zirconia blocks (15 × 15 × 10 mm, Zpex, Tosoh Corporation) were polished with 1,000 grit sand paper and air-abraded with 50 μm Al2O3 for 10 seconds (40 psi). They were divided into 5 groups: control (CO), Metal/Zirconia primer (MZ, Ivoclar Vivadent), Z-PRIME Plus (ZP, Bisco), Zirconia Liner (ZL, Sun Medical), and Scotchbond Universal adhesive (SU, 3M ESPE). Transbond XT Primer (used for CO, MZ, ZP, and ZL) and Transbond XT Paste was used for bracket bonding (Gemini clear ceramic brackets, 3M Unitek). After 24 hours at 37°C storage, specimens underwent 2,000 thermocycles, and then, shear bond strengths were measured (1 mm/min). An adhesive remnant index (ARI) score was calculated. The data were analyzed using one-way analysis of variance and the Bonferroni test (p = 0.05).
Results: Surface treatment with primers resulted in increased shear bond strength. The SU group showed the highest shear bond strength followed by the ZP, ZL, MZ, and CO groups, in that order. The median ARI scores were as follows: CO = 0, MZ = 0, ZP = 0, ZL = 0, and SU = 3 (p < 0.05).
Conclusions: Within this experiment, zirconia primer can increase the shear bond strength of bracket bonding. The highest shear bond strength is observed in SU group, even when no primer is used.
키워드
Ceramic bracket; Multi-mode adhesive; Orthodontic bracket; Universal adhesive; Zirconia; Zirconia primer
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