RESUMO
La maloclusión clase III se considera un reto en la práctica de todo ortodoncista. Una de las principales dudas al respecto reside en ¿cuándo es el mejor momento para intervenir? Exis- ten dos enfoques en el manejo ortodóntico del paciente: 1) la ortodoncia interceptiva; y 2) la ortodoncia correctiva. La or- todoncia interceptiva busca la prevención del establecimiento de la malolcusión. En este grupo, se encuentra el uso de más- cara facial con disyunción maxilar y el de aparatología fija (2x4 o 2x6). Por otro lado, la intervención correctiva hace re- ferencia al camuflaje de las características que trae consigo la maloclusión clase III ya establecida; dentro de este enfoque se encuentran las extracciones de piezas, el uso de minitornillos extraalveolares y la filosofía MEAW. Se puede concluir que el adecuado manejo de la maloclusión clase III radica en el oportuno y correcto diagnóstico, que debe realizarse a través de la minuciosa inspección de las características y hallazgos intra y extraorales de los pacientes (AU)
Class III malocclusion is considered a challenge in the practice of every orthodontist. One of the main questions is: when is the best time to intervene? There are 2 approaches to the orthodontic management of the patient: 1) interceptive orthodontics, and 2) corrective orthodontics. Interceptive or- thodontics seeks to prevent the establishment of malocclusion by means of the use of a facial mask with maxillary disjunc- tion, or the use of fixed appliances (2x4 or 2x6). Corrective intervention refers to camouflaging the characteristics of a Class III malocclusion that is already established. This ap- proach uses tooth extraction, extra-alveolar mini screws or the MEAW philosophy. To conclude, proper management of Class III malocclu- sion is based on timely, correct diagnosis, which must be made through careful inspection of the characteristics and intraoral and extraoral findings in patients (AU)
Assuntos
Humanos , Ortodontia Corretiva/métodos , Ortodontia Interceptora/métodos , Má Oclusão Classe III de Angle/terapia , Técnica de Expansão Palatina , Aparelhos de Tração Extrabucal , Aparelhos Ortodônticos FixosRESUMO
OBJECTIVE: The purpose of this study was to evaluate the nasal septum and the depth of posterior palatal arch in the different facial vertical patterns using cone-beam computed tomography (CBCT). MATERIALS AND METHODS: A total of 143 CBCTs were analysed (53 normodivergents, 26 hypodivergents, and 64 hyperdivergents) using the software Real Scan 2.2. On the coronal view, the following measurements were taken, palatal interalveolar length (PIL), palatal arch depth (PAD), maxillopalatal arch angle (MPAA), septal vertical length (SVL), deviated septal length (DSL), and deviated septal curve angle (DSCA). Using the program Stata v16.0, we obtained the mean, standard deviation and median values. The identification of significant differences between facial biotypes was performed using the one-way ANOVA test and H of Kruskal-Wallis test, considering a significance level of 0.05. RESULTS: The hypodivergent group got the highest PIL and MPAA (49.6mm and 118.1° respectively), with statistically significant differences (P<0.05) between this group and the hyperdivergent group. Statistically significant differences were found by gender for the SNMeGo, PFH, AFH, and the relationship between the facial heights, where the males had the highest values. Additionally, PIL and SVL also had the highest values for males (48.8mm and 63.6mm respectively). CONCLUSIONS: Patients presenting with greater hyperdivergence have shorter interalveolar distances and smaller maxillopalatal arch angles.