Evaluation of the Effect of Salivary Melatonin Levels on Postoperative Pain and Sleep Quality Following Endodontic Treatments Performed at Different Days and Times

This clinical study aims to evaluate the effect of salivary melatonin levels on postoperative pain and sleep quality in patients undergoing root canal treatment at different times of the day. Each participant will receive endodontic treatment on two asymptomatic mandibular molars, one in the morning and the other in the afternoon. Pain intensity and sleep quality will be assessed using standard questionnaires, and salivary melatonin levels will be analyzed.