Objective: To explore the pain risk stratification and pain factors in patients with periapical periodontitis in primary hospitals after a single root canal treatment. Method: Sixty patients with periapical periodonti...Objective: To explore the pain risk stratification and pain factors in patients with periapical periodontitis in primary hospitals after a single root canal treatment. Method: Sixty patients with periapical periodontitis who underwent a single root canal treatment in the dental department of primary hospitals from September 2024 to September 2025 were selected. The numerical scoring system (NRS) was used to evaluate pain at 6h, 24h, 48h, and 72h after treatment;Pain risk stratification is based on NRS scores within 48 hours after treatment, with low-risk scores ranging from 0-3, medium risk scores ranging from 4-6, and high-risk scores ranging from 7-10. Use univariate and multivariate logistic regression analysis to identify factors associated with postoperative moderate to high-risk pain. Out of 60 patients, 36 were at low risk (60.00%), 16 were at medium risk (26.67%), and 8 were at high risk (13.33%). Postoperative pain decreases over time and becomes more pronounced 6-24 hours after treatment. Univariate analysis showed that tooth grinding, preoperative spontaneous pain, significant percussion pain, apical transmission shadow diameter ≥ 5 mm, treatment time ≥ 45 min, and filling material apical overflow were associated with postoperative moderate to high-risk pain (P<0.05). Multivariate logistic regression analysis showed that molars, preoperative spontaneous pain, apical transmission shadow diameter ≥ 5 mm, and filling material apical overflow were independent risk factors for postoperative moderate to high-risk pain (P<0.05). Conclusion: The pain of patients with periapical periodontitis in primary hospitals after a single root canal treatment is mainly concentrated in the early postoperative period, with low risk as the main factor. Teeth grinding, preoperative spontaneous pain, large apical translucency, and apical overflow of filling materials increase the risk of postoperative pain, which should be identified and intervened clinically.展开更多
摘要Objective: To explore the pain risk stratification and pain factors in patients with periapical periodontitis in primary hospitals after a single root canal treatment. Method: Sixty patients with periapical periodontitis who underwent a single root canal treatment in the dental department of primary hospitals from September 2024 to September 2025 were selected. The numerical scoring system (NRS) was used to evaluate pain at 6h, 24h, 48h, and 72h after treatment;Pain risk stratification is based on NRS scores within 48 hours after treatment, with low-risk scores ranging from 0-3, medium risk scores ranging from 4-6, and high-risk scores ranging from 7-10. Use univariate and multivariate logistic regression analysis to identify factors associated with postoperative moderate to high-risk pain. Out of 60 patients, 36 were at low risk (60.00%), 16 were at medium risk (26.67%), and 8 were at high risk (13.33%). Postoperative pain decreases over time and becomes more pronounced 6-24 hours after treatment. Univariate analysis showed that tooth grinding, preoperative spontaneous pain, significant percussion pain, apical transmission shadow diameter ≥ 5 mm, treatment time ≥ 45 min, and filling material apical overflow were associated with postoperative moderate to high-risk pain (P<0.05). Multivariate logistic regression analysis showed that molars, preoperative spontaneous pain, apical transmission shadow diameter ≥ 5 mm, and filling material apical overflow were independent risk factors for postoperative moderate to high-risk pain (P<0.05). Conclusion: The pain of patients with periapical periodontitis in primary hospitals after a single root canal treatment is mainly concentrated in the early postoperative period, with low risk as the main factor. Teeth grinding, preoperative spontaneous pain, large apical translucency, and apical overflow of filling materials increase the risk of postoperative pain, which should be identified and intervened clinically.