Abstract: Objective: To retrospectively analyze the prognosis of 68 cases of children with permanent tooth trauma. Methods: A total of 116 permanent teeth from 68 children with trauma in the Department of Pediatric Dentistry of our hospital from 2019 to 2021 were selected. The clinical data of gender, age, preeminent tooth location, visiting time, and development period were analyzed. The patients were followed up for six months to evaluate the prognosis of the affected teeth, and the influencing factors were analyzed by univariate analysis and multivariate Logistic regression analysis. The negative prognosis was summarized. Results: The patients were mostly male with an average age of (8.93±1.28) years. The time of visiting and the type of periodontal tissue injury were correlated with the prognosis of affected teeth (P<0.05). Multivariate regression analysis showed that more than 24 hours of visit time was a risk factor for prognosis (P<0.05). 50% of affected teeth showed negative prognosis, and 36.21% of which had root resorption. Conclusion: The time of visit and the type of periodontal tissue injury are related to the prognosis. Timely and professional treatment should be accepted after trauma. At the same time, the publicity of tooth injury prevention should be strengthened to raise the level of public attention.

Key words: permanent tooth trauma, influence factors, prognosis, root resorption