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Adhesion of orthodontic brackets to indirect laboratory-processed resin composite as a function of surface conditioning methods and artificial aging

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info:eu-repo/semantics/openAccess

Date

2016

Author

Yüzbaşıoğlu, Emir
Sayar Torun, Gülsilay
Özcan, Mutlu

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Citation

Yüzbaşıoğlu, E., Sayar Torun, G. ve Özcan, M. (2016). Adhesion of orthodontic brackets to indirect laboratory-processed resin composite as a function of surface conditioning methods and artificial aging. Journal Of Adhesıon Science And Technology, 30(23), 2565-2572. https://dx.doi.org/10.1080/01694243.2016.1186327

Abstract

This study compared the shear bond strength of orthodontic brackets to laboratory-processed indirect resin composites (IRC) after different surface conditioning methods and aging. Specimens made of IRC (Gradia Indirect, GC) (thickness: 2 mm; diameter: 10 mm) (N = 80) were randomly assigned to one of the following surface conditioning methods: C-Control: no treatment; AA - Air-abrasion (50 mu m Al2O3 particles); DB-Diamond bur and HF - Etching with hydrofluoric acid (9.6%). After adhesive primer application (Transbond XT), orthodontic brackets were bonded to the conditioned IRC specimens using adhesive resin (Transbond XT). Following storage in artificial saliva for 24 h at 37 degrees C, the specimens were thermocycled (x1000, 5-55 degrees C). The IRC-bracket interface was loaded under shear in a Universal Testing Machine (0.5 mm/min). Failure types were classified using modified adhesive remnant index criteria. Data were analyzed using two-way ANOVA and Tukey's HSD (alpha = 0.05). Surface conditioning method did not significantly affect the bond strength results (p = 0.2020), but aging significantly decreased the results (p = 0.04). Interaction terms were not significant (p = 0.775). In both non-aged and aged conditions, non-conditioned C group presented the lowest bond strength results (MPa) (p < 0.05). In non-aged conditions, surface conditioning with DB (8.03 +/- 0.77) and HF (7.87 +/- 0.64) showed significantly higher bond strength results compared to those of other groups (p < 0.05). Thermocycling significantly decreased the mean bond strength in all groups (2.24 +/- 0.36-6.21 +/- 0.59) (p < 0.05). The incidence of Score 5 (all adhesive resin remaining on the specimen) was the highest in HF group without (80%) and with aging (80%) followed by DB (40, 70%, respectively). C groups without and with aging showed exclusively Score 1 type (no adhesive resin on the specimen) of failures indicating the least reliable type of adhesion.

WoS Q Kategorisi

Q3

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Source

Journal Of Adhesıon Science And Technology

Volume

30

Issue

23

URI

https://dx.doi.org/10.1080/01694243.2016.1186327
https://hdl.handle.net/20.500.12511/2932

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  • Makale Koleksiyonu [528]
  • Scopus İndeksli Yayınlar Koleksiyonu [5975]
  • WoS İndeksli Yayınlar Koleksiyonu [6094]



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