The Effect of Calcium Hydroxide Application in Two Different Mixtures on Dentin Fracture Strength of Endodontically Treated Teeth

Purpose: The aim of this in vitro study was to evaluate the effect of two different calcium hydroxide (CH) mixtures on the dentine fracture strength (DFS) of endodontically treated human teeth. Materials and Methods: For this purpose 90 extracted intact human mandibular incisors were used. The teeth were divided into three experimental groups. Group 1: CH and sterile saline solution mixture. Group 2: CH and % 2 chlorhexidine gluconate (CHX) mixture. Group 3: positive and negative control groups (without any CH application). The DFS of randomly chosen 10 teeth of every group was measured in an Instron testing machine on 7th, 14th or 28th day. Results: The results clearly indicated that there are no statistically significant difference neither between the saline and CHX mixture groups, nor the positive control group (p=0,441). Conclusion: Both mixtures of CH can be used safely up to 4 weeks as a root canal medicament.