Research Article

Effect of Different Surface Treatments on the Repair of Aged Bulk-Fill Composites: An In Vitro Study

Volume: 22 Number: 4 December 29, 2019
EN

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.

Keywords

Supporting Institution

None.

Project Number

None.

Thanks

The author would like to express his thanks and appreciation to Dr. Pınar ERÇAL for reviewing the manuscript in terms of English grammar.

References

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Details

Primary Language

English

Subjects

Health Care Administration

Journal Section

Research Article

Publication Date

December 29, 2019

Submission Date

November 14, 2019

Acceptance Date

December 24, 2019

Published in Issue

Year 1970 Volume: 22 Number: 4

EndNote
Şişmanoğlu S (December 1, 2019) Effect of Different Surface Treatments on the Repair of Aged Bulk-Fill Composites: An In Vitro Study. Cumhuriyet Dental Journal 22 4 451–460.

Cited By

Cumhuriyet Dental Journal (Cumhuriyet Dent J, CDJ) is the official publication of Cumhuriyet University Faculty of Dentistry. CDJ is an international journal dedicated to the latest advancement of dentistry. The aim of this journal is to provide a platform for scientists and academicians all over the world to promote, share, and discuss various new issues and developments in different areas of dentistry. First issue of the Journal of Cumhuriyet University Faculty of Dentistry was published in 1998. In 2010, journal's name was changed as Cumhuriyet Dental Journal. Journal’s publication language is English.


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