Measurement Of Facial Bone For The Aging Changes In Chinese

Objective Facial bone aging has an important influence to the aging face, this study measured different age groups of Chinese facial bones, trying to find out the changes of characteristic parameters of aging facial bone.Methods Facial bone computed tomographic scans were obtained from 120 Chinese patients (60 male and 60 female),divided into three age groups. All computed tomographic scans were underwent 3-dimensional reconstruction with volume rendering, then the measurements of inferior orbit angle、orbit diagonal ratio、orbit trapezoidal angle、lateral orbit angle、maxillary protuberance angle、Sella-Nasion (SN) distance、maxillary angle and Pyriform angle were obtained. The comparison was made between each groups, and between Oriental and Caucasian.Results From young to middle age, the Maxillary angle and Orbit diagonal ratio showed a significant decrease and increase respectively in both sexes. In this period,male’s Pyriform angle and female’s Orbit trapezoidal angle showed a significant decrease; There was a significant decrease in Lateral orbit angle for female and significant increase in SN distance for aging male; Inferior orbit angle and Maxillary protuberance angle did not showed significant change.Conclusion Maxillary angle and Orbit diagonal ratio are significant parameters of aging face. Pyriform angle and SN distance can be used to indicate senility for male, whereas Orbit trapezoidal angle and Lateral orbit angle for female. Inferior orbit angle and Maxillary protuberance angle are inappropriate for senescent estimate.