¿Depende la morfología de la sinfisis mandibular del sexo, de la clase esquelética y del patrón facial?

Resumen

Introduction: the objectives of the study were; analyze the relationship of the mandibular symphysis bone and soft on the sex of the patient tissue, skeletal class, facial pattern and lower incisor inclination. Material and methods: 385 patients (206 women and 179 men) with a mean age of 28.8 years were selected. Patients were divided into groups by skeletal class (Class I, II or III) and the facial pattern (brachyfacial, dolicofacial or mesofacial). 10 measurement (4 and 5 angular linear) were made in symphysis bone and three linear measurements of soft symphysis. Tweed angle was performed to assess lower incisor. Obtaining a total of 8,496 measurements. Results: in reference to bone symphysis measurements, Statistically significant difference were found for Id-B-Pg, and B-Pg-Mb angles as well as for linear measurements for skeletal class and in dolichofacial patients. The IMPA angle shows a retroinclination of lower incisor in patients with skeletal class III. As for soft tissues measurements, skeletal class III patienets recorded thicker soft tissue in Pg, Gn and Me points, and less thickness in dolichofacial patients. There s sexual dimorphism in skeletal and soft tissue linear measurements, being higher in males. Conclusions: we obtained associations of mandibular symphysis, soft tissue and dental measurements between sex, facial pattern and skeletal class.