Analysis Of Facial-To-Maxillary Width Ratio By CBCT

The aim of this study was to explore the transverse features of adult craniomaxillofacial bones as well as the facial-to-maxillary width ratio for the first time, which would be contribute to the early interventions of the maxillary transverse deficiency (MTD) in children. Thirty individuals (9 males and 21 females) aged 20-25 years with no history of orthodontic treatment and no manifestation of reverse overbite, were selected to have examinations of CBCT and lateral cephalometric radiographs in 2024. The zygomatic arch spacing, mandibular angle spacing, roof of glenoid fossa spacing (the initial facial width), maxillary basal bone width and mandibular basal bone width were measured with imaging software rulers to analyze the transverse characteristics of the craniomaxillofacial bones in the different genders and sagittal facet groups, as well as the facial-to-maxillary width ratio. This study was approved by the Medical Ethics Committee of the investigators’ institution. The measured items in the male group were statistically significantly higher than those in the female group, whereas no significant statistical changes were observed among the sagittal facet groups. The correlation between maxillary basal bone width and the initial facial width was statistically significant, and the average of facial-to-maxillary width ratio (0.637) was close to the golden proportion (0.618). There was harmonious proportional relationship between maxillary basal bone width and initial facial width, suggesting its potential as a novel diagnostic and therapeutic tool for MTD.