Determinación del pico máximo de crecimiento puberal mandibular mediante la maduración ósea cérvico vertebral y la edad cronológica en pacientes adolescentes que acuden a la clínica dental docente UPC marzo 2011 - 2013

Abstract

Objective: The aim of this study was to determinate the peak of mandibular growth by the chronological age and the cervical vertebrae maturation in patients between 8-16 years of age, who received treatment in the clinic of the School of dentistry UPC (Peruvian University of Applied Science), between March 2011 and 2013. Materials and Methods: The study was observational, descriptive, cross-sectional, retrospective and used 137 cephalometric digital radiographs obtained from the data base program: SMILE® used in the Dental Clinic of UPC. These digital radiographs were of patients between 8-16 years, who attended the Dental Clinic for dental treatment, and were evaluated with the Method of Vertebral Cervical Maturation proposed by T. Baccetti in 2005. This method analysis the morphological characteristics of the bodies of the second, third and fourth cervical vertebra to determine the peak in mandibular growth. This method classifies six maturational stages, T1-T6. The digital cephalograms were analyzed by two calibrated examiners (Kappa = 0.7). Results: Statistical analysis (Kruskal Wallis, p < 0.05) was conducted to evaluate the relationship between the chronological age and the appearance of the cervical vertebral maturation stage 3 and 4 to determining the peak of pubertal mandibular growth. In girls, the peak of mandibular growth occurred at the age 10.48 and in boys this occurred at the age of 11.21 Conclusions: The peak of pubertal mandibular growth occurred earlier in girls (10.48 years) than in boys (11.21years), having a difference of approximately one year between the two sexes.