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ORIGINAL RESEARCH article

Front. Mater.

Sec. Biomaterials and Bio-Inspired Materials

Comparative Analysis of the Impact of Modern Cavity Disinfectants on Dentin Bond Strength

Provisionally accepted
  • 1Batman University, Batman, Türkiye
  • 2Cukurova Universitesi, Adana, Türkiye
  • 3Kahramanmaras Sutcu Imam Universitesi, Kahramanmaras, Türkiye

The final, formatted version of the article will be published soon.

The durability of the hybrid layer, essential for successful bonding, depends on collagen stability. Dentin MMPs degrade collagen over time, reducing bond strength; thus, MMP inhibitors help maintain durability. This study evaluates the short-term (24 h) and long-term (12 months) effects of dentin pretreatment agents—CHX, QC, NR, RF, and α-TF—on bond strength. A total of 144 extracted human molars were randomly divided into six groups and treated for 60 seconds before application of All-Bond Universal and composite resin. A nanohybrid flowable composite was placed using a starch tube to obtain 1-mm² bonded specimens. Half of the samples (n = 12) were tested after 24 hours; the others underwent thermocycling to simulate 12 months of aging prior to μSBS testing with a universal testing machine (MOD Dental MIC-101, Esetron Smart Robotechnologies, Ankara, Turkey) at 0.5 mm/min. Failure modes were examined under a stereomicroscope. Data were analyzed using one-way ANOVA and Tukey post hoc tests (p < .05). After 24 hours, QC exhibited the highest μSBS, followed by CHX and NR, all significantly higher than α-TF. After 12 months, QC, RF, and NR showed increased μSBS, while Con, CHX, and α-TF decreased. QC and NR appear effective natural alternatives to CHX, with QC showing the most promising long-term results.

Keywords: Cavity disinfectants, Chlorhexidine, Dentin pretreatment, Flavonoid, Micro shear bond strength (μSBS), Naringin, Quercetin

Received: 03 Oct 2025; Accepted: 09 Dec 2025.

Copyright: © 2025 Gümüş, sonkaya and keçeci. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

* Correspondence: Simge Gümüş

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