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J Dent Res Dent Clin Dent Prospects. 2023;17(4): 211-215.
doi: 10.34172/joddd.2023.40820
  Abstract View: 344
  PDF Download: 211

Basic Research

Original Article

Effect of at-home and in-office bleaching on microleakage of class V composite resin restorations using different types of universal adhesives: An in vitro study

Mehdi Abed Kahnamouei 1 ORCID logo, Soodabeh Kimyai 1 ORCID logo, Katayoun Katebi 2 ORCID logo, Mohammad Esmaeel Ebrahimi Chaharom 1 ORCID logo, Mehdi Daneshpooy 1 ORCID logo, Mahmoud Bahari 3* ORCID logo, Mahshid Moradi 1 ORCID logo

1 Department of Esthetic and Restorative Dentistry, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
2 Department of Oral and Maxillofacial Medicine, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
3 Dental and Periodontal Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
*Corresponding Author: Mahmoud Bahari, Email: Mahmoudbahari@ymail.com

Abstract

Background. When bleaching agents contact dental structures, they act on restorative materials and adhesive interfaces. This study investigated the effect of “at-home” and “in-office” bleaching on the microleakage of composite resin restorations performed with different universal adhesives in self-etch and etch-and-rinse modes.

Methods. Class V cavities were prepared in 132 premolars. The samples were divided into four groups (n=33). All Bond Universal adhesive was used in the first and second groups, and G-Premio Bond adhesive was used in the third and fourth groups. The total-etch mode was used in the first and third groups, and the self-etch mode was used in the second and fourth groups. The samples were divided into three subgroups (n=11). In the first subgroup, home bleaching was used, and in the second subgroup, office bleaching was used. In the third subgroup, bleaching was not performed. The specimens were examined under a stereomicroscope for microleakage. Ordinal regression analysis was applied (P<0.05).

Results. The adhesive type, application method, and margin type significantly affected microleakage (P<0.05). The amount of microleakage in All Bond Universal adhesive was significantly higher than in G-Premio Bond adhesive. The chance of microleakage in the self-etch mode was almost twice as high as in the etch-and-rinse mode. The bleaching method did not significantly affect microleakage (P>0.05).

Conclusion. Based on the results of the microleakage test, bleaching after composite resin restorations did not significantly affect the microleakage of Class V restorations.

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Submitted: 09 Oct 2023
Accepted: 05 Dec 2023
ePublished: 30 Dec 2023
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