Association Between Pain during Intracanal Diode Laser Application and Demographic and Preoperative Factors

Abstract

Objective: The present study aimed to evaluate the association between pain during intracanal diode laser irradiation in mandibular molar teeth have symptomatic apical periodontitis and factors such as demographic and preoperative factors. Methods: Fourteen patients who have mandibular molar teeth have symptomatic apical periodontitis were enrolled in this clinical study. All endodontic treatments were performed in one-visit. After final irrigation, root canals were irradiated using a 970 ± 15 nm diode laser with a 14 W maximum power. Pain during laser application, postoperative pain levels at day 1, 3, 5, 7 and 30 and postoperative percussion tenderness levels at day 7 on the visual analog scale were marked. Multiple lineer regression was used for constructing a predictive model for intraoperative pain (P = 0.05). Results: 11 (78 %) patients reported pain during intracanal diode laser application. Age, gender, tooth type (first molar or second molar), side of the tooth (left or right), preoperative palpation, pulp status, preoperative percussion and preoperative spontaneous pain did not predict intraoperative pain during intracanal diode laser application (F(8, 5) = 2.332, p > .05). Conclusion: Within the limitations of the present clinical trial, none of the factors predict intraoperative pain during intracanal diode laser application.