Measurement of Several Profile Angles in Chinese and Deutro- Malayid Populations in Surabaya to Determine Mean Profile Angles (Anthropometric Study for Surgical Guidance)

Any deviation from normal facial proportions and dental relationships is referred to as a dentofacial deformity. This deformity frequently manifests a complex disorder known as dysgnathia, which necessitates a combination of orthodontics and surgery known as orthognathic surgery to correct. After surgery, alterations in the position of the underlying skeletal bones can affect the facial soft tissues. These alterations have an effect on the facial profile of the patient, making the prediction of the patient's facial profile a crucial step in planning orthognathic surgical treatment. The purpose of this study is to obtain direction on standard profile angle measurements in the Chinese and Deutro-Malayid populations in Surabaya in order to perform surgery in the maxillofacial region that can result in changes in profile angle measurements. Data was collected from 100 Surabaya residents who meet the research criteria. Statistical calculations using the Hotelling's Trace test on ANOVA test results between the Chinese and Deutro-Malayid populations in Surabaya obtained p=0.363 (p>0.05). There was only a significant difference in the submental-neck angle among other variables, with p=0.041 (p<0.05). No significant differences in profile angles were found between the Chinese and Deutro-Malayid populations in Surabaya.