RESUMEN
BACKGROUND/AIM: This study assessed the epidemiology of luxation injuries with or without dental fractures in patients attending the outpatient clinic of a Brazilian dental school over the past decade. MATERIAL AND METHODS: We reviewed clinical records from a specialized center for dental trauma care in Brazil, focusing on patients who experienced at least one traumatic dental injury (TDI) in a permanent tooth between 2012 and 2022. The extracted data included sex, age, etiology, time between trauma occurrence and the search for initial care, TDI classification, and the need for endodontic treatment. The statistical analysis involved Pearson's chi-squared and Fisher's exact tests at a 5% significance level. RESULTS: The 366 analyzed clinical records included 166 patients (350 teeth) with luxation injuries. Men (n = 102) showed a higher prevalence of luxation injuries than women (n = 64). Extrusive luxation prevailed (n = 99 patients and 208 teeth). Patients with luxation injuries sought care promptly after dental trauma incidents (p = .02) and demonstrated a higher incidence of endodontic treatment (p < .0001) than those without luxation injuries. Lateral luxation was notably associated with traffic accidents (p < .0001). The combination of luxation injuries and tooth fractures did not correlate with a higher need for endodontic treatment (p > .05). CONCLUSIONS: Age and trauma etiology seemed to have influenced the epidemiological profile of luxation injuries. Additionally, these injuries affected the time to seek initial care and the need for endodontic treatment.
RESUMEN
Objetivo: as modificações regionais inerentes ao processo de crescimento mandibular, como a reabsorção da borda anterior do ramo, determinam o aumento do espaço na região retromolar e mostram a necessidade ou não de exodontia dos terceiros molares. O objetivo deste trabalho foi avaliar, quantitativamente, o crescimento anteroposterior da região retromolar mandibular e verificar a ocorrência de dimorfismo sexual dessa variável. Material e métodos: foram utilizadas telerradiografias obtidas em norma lateral de 45 jovens, de ambos os sexos, leucodermas, entre nove e 11 anos de idade, mesofaciais, com perfis faciais harmônicos e oclusão normal. Foi aferido o espaço retromolar ao longo do plano oclusal funcional, entre a borda anterior do ramo da mandíbula e a face distal do primeiro molar inferior. Os dados obtidos submeteram-se, primeiramente, ao teste t de Student, para verificar o erro sistemático, e ao teste de correlação para o erro casual, ambos intraexaminador, indicando ausência de erro do método. Empregou-se o teste de Tukey, para comparar as medidas obtidas nas diferentes idades, e a análise de variância, para verificar a ocorrência de dimorfismo sexual. Resultados e conclusão: verificou-se um crescimento da região retromolar de 3,29 mm, entre os nove e os 11 anos. Nas idades de dez aos 11 anos ocorreu um aumento de 2,55 mm, sendo estatisticamente maior do que o constatado dos nove aos dez anos, de 0,74 mm. A análise de variância indicou ausência de dimorfismo sexual.
Objective: regional mandibular growth changes as the resorption of the anterior ramus border that increases the retromolar space determining if lower third molars need to be removed or not. The aim of this study was to evaluate, quantitatively, the mandibular alveolar sagital growth and also if sexual dimorphism was present. Material and methods: lateral cephalograms of 45 Brazilian Caucasian children of both genders, aging from 9 to 11 years, with balanced faces and good occlusion were used. The retromolar mandibular space was measured at the functional occlusal plane, from the anterior border of the ramus to the distal aspect of the lower first molar. The data was firstly examined about systematic and random intra-examiner errors through Student's "t" test and correlation test, respectively. In order to compare the data among different ages and occurrence of sexual dimorphism Anova and Tukey's test were performed. Results and conclusions: it was found an increase of 3.29 mm in the mandibular retromolar space from 9 to 11 years of age. Between 10 and 11 years there was an increase of 2.55 mm, statistically greater than those verified from 9 to 10 years of age, which was 0.74 mm. Anova demonstrated no sexual dimorphism.