Dental trauma and itssequelae in deciduous and permanent teeth - Longitudinal study

Résumé

Objective: This study evaluated the prevalence, clinical management and sequelae in deciduous teeth involved and permanent successors in 150 children (256 deciduous teeth. Of these, 63.3% were male, 24-35 months of age at the time of the trauma (37.9%) and the falls (78.1%) represented the major etiological factor. In relation to the type of injury, 24.6% was enamel fracture; 62.5% showed support tissue injury (lateral luxation, 22.3%). In the first and second assessments (T1 and T2), the average follow-up time was 14.5 and 26 months (256 and 131 teeth).We diagnosed clinical and radiographic sequels including discoloration of the crown (T1-15.6; T2-13.7%), inflammatory root resorption (T1-7.0; T2-8.4%); and in permanent successors, enamel hypoplasia (T1-1.2; T2-2.3%), eruption disturbances (T1-2.0; T2-1.5%).The chi-square test evidenced association, in T1, between injuries to the supporting tissues and clinical (p = 0.003) and radiographic (p = 0.004) sequelae in permanent successors; and between clinical sequelae and age at the time of trauma (p = 0.005). In T2, radiological sequelae in deciduous teeth with injuries to the tooth and supporting tissue (p = 0.035); as well as clinical sequelae with elapsed time of trauma in permanent teeth (p = 0.005). It is concluded that the follow-up of traumatized deciduous teeth is essential to prevent sequelae.