Effect of Different Surface Treatments on the Repair of Aged Bulk-Fill Composites: An In Vitro Study
Abstract
Objectives: The aim of this in vitro study was to evaluate the efficiency of different surface treatments on the microtensile bond strength (µTBS) of aged bulk-fill composite.
Materials and Methods: Sixty bulk-fill resin-based composite (RBC) specimens in 5 x 5 x 5 dimensions were prepared. After the aging by thermal cycling for 5000 times between 5 and 55°C, substrate surfaces were abraded with SiC abrasive papers. Specimens were divided into 6 groups according to the surface treatment protocol: no surface treatment (control), control + Single Bond Universal (SBU; 3M ESPE) application, phosphoric acid etching (PA) + SBU, hydrofluoric acid etching (HF) + SBU, aluminum oxide air abrasion (AlO) + SBU, and tribochemical silica coating (TSC) + SBU. Surface roughness values were measured in five different directions using a contact profilometer (n=10). Then, specimens were repaired with a conventional RBC. After the repair, bonded specimens were cut into 1 mm2 beams and µTBS values were determined until failure at a crosshead speed of 0.5 mm/min. Specimen surfaces after surface treatments were observed by SEM. Data were analyzed using ANOVA and Tukey tests (p<0.05).
Results: One-way ANOVA revealed significant difference (p<0.001) among the surface treatments. The lowest repair µTBS values were observed for the control group. SBU application alone significantly improved repair µTBS values (p<0.001). The highest µTBS values were obtained for the AlOand TSC, and HF followed. The surface roughness ranking for the five surface treatment protocols was as follows: TSC > AlO > HF > PA = Control.
Conclusions: Aged bulk-fill RBCs can be successfully repaired if effective and safe repair protocol is chosen. The highest µTBS values were obtained for the AlO and TSC. The use of universal adhesive alone is promising to facilitate the repair of bulk-fill RBCs.
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References
- Lee M-R, Cho B-H, Son H-H, Um C-M, Lee I-B. Influence of cavity dimension and restoration methods on the cusp deflection of premolars in composite restoration. Dent Mater. 2007;23(3):288–295.
- Taha NA, Palamara JEA, Messer HH. Cuspal deflection, strain and microleakage of endodontically treated premolar teeth restored with direct resin composites. J Dent. 2009;37(9):724–730
- Park J, Chang J, Ferracane J, Lee IB. How should composite be layered to reduce shrinkage stress: Incremental or bulk filling? Dent Mater. 2008;24(11):1501–1505.
- Furness A, Tadros MY, Looney SW, Rueggeberg FA. Effect of bulk/incremental fill on internal gap formation of bulk-fill composites. J Dent. 2014;42(4):439–449.
- Ilie N, Stark K. Effect of different curing protocols on the mechanical properties of low-viscosity bulk-fill composites. Clin Oral Investig. 2015;19(2):271–279.
- Campodonico CE, Tantbirojn D, Olin PS, Versluis A. Cuspal deflection and depth of cure in resin-based composite restorations filled by using bulk, incremental and transtooth-illumination techniques. J Am Dent Assoc. 2011;142(10):1176–1182.
- Ilie N, Hickel R. Investigations on a methacrylate-based flowable composite based on the SDRTM technology. Dent Mater. 2011;27(4):348–355.
- Frauscher KE, Ilie N. Degree of conversion of nano-hybrid resin-based composites with novel and conventional matrix formulation. Clin Oral Investig. 2013;17(2):635–642.
Details
Primary Language
English
Subjects
Health Care Administration
Journal Section
Research Article
Authors
Publication Date
December 29, 2019
Submission Date
November 14, 2019
Acceptance Date
December 24, 2019
Published in Issue
Year 1970 Volume: 22 Number: 4
Cited By
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