Photobiomodulation After Nonsurgical Root Canal Treatment

Brief Summary

This randomized, double-blind controlled clinical trial will evaluate whether adjunctive photobiomodulation improves recovery after nonsurgical root canal treatment in adults with teeth diagnosed with symptomatic apical periodontitis. Participants will receive standard nonsurgical root canal treatment and will be randomized to adjunctive photobiomodulation using the Fotona LightWalker Nd:YAG laser or to an identical simulated laser procedure without laser energy delivery. The study will evaluate mechanical allodynia using maximum occlusal force measurements comparing the treated tooth with the contralateral asymptomatic tooth. Postoperative pain will also be assessed using the Numeric Rating Scale after percussion testing.