Evaluation Of Factors Related to The Maintenance of Avulsioned Permanent Teeth

Abstract

Objectives: Identify factors that influence favorable outcomes and maintenance of avulsed permanent teeth. Methodology: A retrospective study was carried out involving avulsed and reimplanted permanent teeth of patients treated from 2012 to 2024 by the FOUFBA Dental Trauma Group. Data such as gender, age, tooth, degree of rhizogenesis, storage medium, extra-alveolar and follow-up time were collected for descriptive analysis. Clinical and radiographic data were classified into outcomes: functional healing (FH), infection-related (inflammatory) resorption and/or pulp necrosis (IRR), replacement resorption (RR) and revascularization (RV). Comparative analysis were performed using Fisher's exact test and survival was performed using the Kaplan-Meier survival curve and Cox analysis. Results: The sample consisted of 30 teeth. The average follow-up time was 41.7 months. The average age was 13 years and the most affected teeth were the upper front teeth. After reimplantation, 3 teeth were revascularized and did not require endodontic intervention, 4 had RV, 10 RR and 13 with IRR. In the analysis of the survival curve (p=0.01), mature teeth had a lower survival rate compared to immature teeth, reducing to 68% in 36 months, progressing to IRR. Conclusion: It was observed that immature teeth presented better outcomes than mature ones and storage in physiological media presented lower chances of IRR, demonstrating that initial measures significantly impact clinical outcomes and survival of reimplanted avulsed teeth.

Key Words: Tooth Injuries, Tooth Avulsion, Tooth Replantation.