Artificial Ageing and Disinfection of Caries Affected Dentin on the Bond Integrity and Failure Analysis of Ion-Releasing Restorative Material

Abstract

Aim: This study examines the SBS of resin-modified glass ionomer cement (RMGIC) on caries-affected dentin after using several cavity disinfectants (ICG activated by PDT, Pr, and SDF). Method: 40 CAD based on ICDAS criteria 3 and 4 teeth were chosen. Teeth were randomly divided into four groups (n = 10). Samples in Groups 1–4 were disinfected with chlorhexidine (CHX), indocyanine green (ICG), Propolis (Pr), and 38% silver diamine fluoride (SDF), respectively. Disinfected samples were bound to RMGIC and aged. SBS was evaluated using the universal testing machine. Stereomicroscope was used to assess bond failure. To compare many groups the Tukey’s Honestly Significant Difference (HSD) test was used. ANOVA was used to compare groups using mean values and standard deviations. Results: CHX-disinfected and RMGIC-bonded CAD had the highest bond values. Group 4 SDF-disinfected and RMGIC-bonded specimens had the lowest bond values. Group 1 samples disinfected with CHX and bonded with RMGIC had the highest bond integrity (p < 0.05) compared to other treatments. Conclusion: Chlorhexidine is the best disinfectant for caries-affected dentin before bonding with resin-modified glass ionomer cement.