Morphometric analysis of the mandibular condyle of hyperdivergent individuals with class II and class III skeletal patterns / Análise morfométrica do côndilo mandibular de indivíduos hiperdivergentes com padrões esqueléticos de classe II e classe III

Abstract

Introduction: to compare the condyle morphology of individuals with hyperdivergent skeletal patterns in class ii and class iii skeletal patterns. Methods: multislice computed tomography examinations of 41 individuals (82 temporomandibular joints), aged 18 to 42, with an accentuated vertical growth pattern, of whom 21 had a class ii skeletal pattern and 20, a class iii skeletal pattern were evaluated retrospectively. The following measurements were taken: width (d1), thickness (d2), horizontal angle (a1), and anterior angle (a2) of the condyle. The normality of data distribution was verified by means of descriptive statistics, graphical analysis, and the shapiro-wilk test. The student’s-t test was used to compare the measurements between the groups tested. The pearson correlation was used to identify correlations among quantitative measurements. A 5% level of significance was used for all tests. Results: there was statistically significant difference between groups for the four measurements analyzed (p 0.05). D1 and d2 values were lower for hyperdivergent individuals with a class ii skeletal pattern. A1 was higher for hyperdivergent individuals with a class ii skeletal pattern, and a2, higher for hyperdivergent individuals with a class iii skeletal pattern. Conclusions: hyperdivergent individuals with a class ii pattern have a condyle with a smaller thickness and width, than individuals with a class iii pattern, and these characteristics should be considered when planning the orthodontic and orthognathic treatments.