Relationship between the mandibular symphysis and orthodontic measurement points on the craniofacial skeleton

Abstract

We investigated the relationship between the mandibular symphysis and measurement points on the craniofacial skeleton used in orthodontic diagnosis and treatment by surveying the area of the symphysis and analyzing cephalograms of 120 patients with high developmental skeletal values. We found a close relationship between the height of the symphysis and total anterior facial height. Inclination of the mandibular incisors was in proportion to that of the alveolar region, but the mandibular site of the symphysis was not affected. We found that the symphysis could be divided into alveolar and mandibular regions.