Comparative Analysis of Fracture Resistance of Tooth After Using Different Intracanal Medicaments: An in Vitro Study

Abstract

Aim: To evaluate whether short-term (7 days) application of intracanal medicaments Calcium Hydroxide, Aloe Vera, Neem extract with Chlorhexidine, and N -acetylcysteine affects fracture resistance of human permanent teeth.

Materials and Methods: Forty, single-rooted human premolars of similar size were endodontically prepared using ProTaper rotary files up to F2. The teeth were divided into five groups (n=8): Group 1: Aloe Vera Gel, Group 2: Calcium Hydroxide, Group 3: N-acetylcysteine (NAC), Group 4: Neem + Chlorhexidine, Group 5: Control (no medicament). After sealing the apices, samples were stored at 37°C in saline for 7 days. Fracture resistance was tested and data were analysed via ANOVA and Tukey’s HSD.

Results: Calcium Hydroxide had the highest fracture strength (1997.5 ± 174.9 N), statistically significantly higher than all other groups.

Conclusion: Calcium Hydroxide significantly enhances fracture resistance and is ideal when structural reinforcement is needed.