Effect of Calcium Hydroxide (CH), Triple Antibiotic Paste (TAP), Nano-sized CH and Nano-sized TAP as Intracanal Medicament on the Push-out Bond Strength of Biodentine: An In-vitro Study

Abstract

Introduction: Root perforations are one of the common procedural errors faced in endodontic procedures. The ideal root repair material must be capable of bonding to the dentin. Calcium Hydroxide (CH) and Triple Antibiotic Paste (TAP) are mostly used for root canal disinfection. Aim: To evaluate the effect of calcium hydroxide, triple antibiotic paste, nano-sized calcium hydroxide and nano-sized triple antibiotic paste as intracanal medicament on the push-out bond strength of biodentine. Materials and Methods: The present in-vitro study was conducted in Department of Conservative Dentistry and Endodontics, Sibar Institute of Dental Sciences, Guntur for a period of 1 month (March 2020). A total of fifty maxillary central incisors (n=50) were decoronated, instrumented with ProTaper rotary NiTi instrument followed by peesoreamers up to no.3, and were divided into five groups (n=10). Group I: CH, Group II: Nano calcium hydroxide, Group III: Triple antibiotic paste, Group IV: Nano triple antibiotic paste and Group V: Control group. The respective medicaments were mixed with propylene glycol and placed to the working length. After one week, medicaments were removed using Passive Ultrasonic Irrigation (PUI). Later, samples were sectioned into slices of 2 mm thickness using hard tissue microtome, and biodentine root repair material was placed into lumen of the slices. All the samples were stored for one week at 37°C, then subjected to push-out bond strength test. Data were analysed using one-way ANOVA, Tuckey, Dunnets Post-hoc test (p-value <0.05). Results: The highest push-out bond strength values were observed in the group IV (p-value <0.001) and least in the control group. Biodentine showed significantly higher resistanceto displacement among the group II (p-value=0.431) and group IV (p-value=0.074) when compared with their conventional medicaments. Conclusion: Nano Triple Antibiotic Paste and Nano Calcium Hydroxide enhanced the push-out bond strength values of biodentine when compared to their conventional intracanal medicaments.