Distribución Morfológica de las Clases II según su naturaleza esqueletal en una muestra de población adulta de la Facultad de Odontología de la Universidad de Chile

Objective: To determine the morphological distribution of Classes II malocclusions according to skeletal pattern in an adult sample of the School of Dentistry of the University of Chile. Materials and methods: The experimental sample consisted of 220 individuals over 18 with an ANB angle greater than 4°. SNA and SNB angles were measured to assign the Class II skeletal pattern. Results: The most frequent skeletal pattern was the mandibular pattern followed by the maxillary pattern. In addition, three new skeletal patterns were found. They have not been explicitly described befo-re in the relevant literature (bi-protrusion, bi-retrusion and within normal range). Conclusions: The most frequent Class II malocclusion skeletal pattern in our study was the mandibular pattern. The bi-retruded and bi-protruded variants should be incorpora-ted into the skeletal diagnosis, particularly the bi-retruded variant, due to its signifi - cant high frequency and clinical relevance.