Influence of Curing Mode and Aging on the Bonding Performance of Universal Adhesives in Coronal and Root Dentin

Overview

Journal BMC Oral Health

Publisher Biomed Central

Specialty Dentistry

Date 2024 Oct 5

PMID 39369181

Authors

Hoda Saleh Ismail

Ashraf Ibrahim Ali

Mohamed Elshirbeny Elawsya

Affiliations

Soon will be listed here.

Abstract

Background: This study aims to evaluate the microtensile bond strength (µTBS) of different resin composite restorations bonded to mid-coronal dentin and proximal root dentin using light-cured, chemical-cured, and dual-cured adhesives immediately and after aging. Nanoleakage and degree of cure were also assessed.

Methods: Eighty-four molars were divided into mid-coronal dentin and proximal root dentin. Each group was further subdivided into three subgroups based on the restorative systems used, which involved the utilization of light-cured, chemical-cured, and dual-cured adhesives. Half of the specimens underwent µTBS testing after 24 h, while the other half after aging. Representative specimens were analyzed for nanoleakage. The degree of cure of the tested adhesive systems was also assessed.

Results: Aging showed a significant negative effect on µTBS results and led to increased nanoleakage (p < 0.001). Furthermore, in all subgroups, the µTBS values of proximal root dentin were lower compared to mid-coronal dentin, except in the aged subgroup for the system utilizing the dual-cured adhesive. The restorative systems with chemical and dual-cured adhesives demonstrated comparable bonding properties. However, the system with the light-cured adhesive exhibited the worst bonding properties after aging when bonded to proximal root dentin and cured at a large distance (p < 0.05).

Conclusions: All tested restorative systems were negatively affected by aging, and the regional dentin had variable effects on the bonding properties. Clinicians should exercise caution when using the tested light-cured adhesive in areas where the curing distance exceeds 3 mm.

Citing Articles

Size-controllable synthesis of hydroxyapatite nanorods via fluorine modulation: applications in dental adhesives for enhanced enamel remineralization.

Meng L, Shu M, Mei P, Liang Y, Xia L BMC Oral Health. 2025; 25(1):204.

PMID: 39923038 PMC: 11806586. DOI: 10.1186/s12903-025-05574-6.

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