The Effect of Different Cleaning Materials on the Bond Strength of Resin Composite to Primary Teeth Dentin Contaminated with Root Canal Sealer

Background: In the literature review, no study was found on the bond strength of the adhesive on the dentin surface contaminated with root canal sealers in root canal treatment applications of primary teeth without underlying permanent teeth germ. This study aims to shed light on clinical applications by finding the most suitable material for cleaning primary tooth dentin contaminated with permanent tooth canal sealers. Methods The occlusal enamel layer was removed and the dentin of the primary tooth that was contaminated with root canal sealers (AH Plus, MTA Fillapex) was cleaned with different irrigation solutions (saline, NaOCI, ethanol). Specimens were restored with a self-etch adhesive (Prime & Bond Universal Dentsply) and composite (Nova Compo C Composite Imicryl Corporation). Sticks with a thickness of approximately 1 mm were obtained from each sample, and the bond strength of the samples was measured in a microtensile test device. The interfacial morphology of the bonded space was evaluated using scanning electron microscopy. Results The highest bond strength was determined in the control and AH Plus saline groups. The group cleaned with ethanol showed the lowest bond strength among all groups ( p  < 0.01). Conclusion Wet cotton pellets soaked in saline provided the best bond strength for cleaning dentin tissue. It has been determined that the most effective material for removing both epoxy resin-based and calcium silicate-based root canal sealants from the access cavity is saline. Clinical Significance: The results presented in this study are very important in increasing the clinical success of primary teeth without underlying permanent teeth germ in pedodontics clinics during root canal treatment.