Effect of root immaturity and depth of intrusion on spontaneous re‐eruption and healing complications: A retrospective analysis

Background/Aims Dental trauma resulting in tooth intrusion is a severe injury of permanent dentition, with a prevalence of 0.5%–1.9% among traumatic dental injuries. Currently, treatment guidelines for intruded permanent teeth depend on root development and the degree of intrusion. However, the categorization of tooth maturity as mature or immature simplifies a complex continuum of root development stages. This study aims to investigate the impact of various stages of root development on the success of spontaneous re‐eruption (SRE) of intruded teeth. Materials and Methods This retrospective study analysed data from 80 children (125 teeth) aged 6–12 years who experienced dental intrusion between 2018 and 2022. Root maturation was classified based on Cvek's classification, eight were categorized as stage 1, 29 as stage 2, 44 as stage 3, 25 as stage 4, and 19 as stage 5. Intruded teeth with immature roots (Cvek's class 1–4) underwent SRE, while mature teeth (Cvek's class 5) were treated with SRE, orthodontic repositioning, or surgical repositioning based on the degree of intrusion. Primary outcome measures were successful re‐eruption and secondary outcomes included observed complications during follow‐up. Results Regression analysis revealed that the patient's age, degree of root maturation, and degree of intrusion significantly affected spontaneous re‐eruption (p