Journal of AdvancedMedical and Dental Sciences Research

Introduction: Intracanal cryotherapy is a promising pain control strategy without any side effects so it is important to know about its effect on mechanical properties of teeth. Hence the present study aims to evaluate the effect of applying intracanal cryotherapy on the fracture resistance of teeth that are endodontically treated. Method: Thirty mandibular incisors with single root canal were selected and randomly divided into groups A & B (n=15). The specimens were kept in distilled water at 37°C that simulated mouth temperature during the procedures. The biomechanical preparation of the samples was done till the apical size of 50 and assigned to either the control group or the cryotherapy group. The surfaces of the specimen were covered with silicone upto 2 mm below Cementoenamel junction to simulate periodontal ligament and immersed in self-curing resin. The specimens in the cryotherapy group (group B) were irrigated with 20mL sterile cold (2.5°C) saline solution for 5 min, whereas specimens in the control group (Group A) received a sterile saline solution at room temperature. The fracture resistance of the specimens was tested with a universal testing machine. The statistical analysis was done Result: The results showed that the cryotherapy specimens group had lower fracture resistance as compared to that of control group specimens. Conclusion: Within the limitations of the present study, it can be concluded that if we use intracanal cryotherapy as a final irrigant, it reduces the vertical fracture resistance of roots. Keywords: Intracanal Cryotherapy, Fracture Resistance, Universal testing machine, Endodontically treated teeth.