Sella Turcica Morphometry in Skeletal Malocclusions: A Cephalometric Evaluation in a Cambodian Cohort

Objective: To measure the linear dimensions of the Sella Turcica (ST) and assess its morphological characteristics across different age groups, genders, and skeletal malocclusion classes within a Cambodian population sample. Material and Methods: A total of 150 archived cephalometric radiographs comprising 50 each from skeletal Class I, Class II, and Class III malocclusion groups were retrospectively selected from patient records at the UP Dental Hospital and traced to measure the ANB angle (A point–Nasion–B point), ST length, depth, anteroposterior diameter, and Cp–Ca distance in millimeters. Results: Age showed a significant positive relationship with the ANB angle (r = 0.415, p < 0.001), AP diameter (r = 0.314, p < 0.001), and Cp-Ca (r = 0.269, p = 0.001). Females had a higher mean ANB angle and depth compared to males, whereas males had a higher mean length, AP diameter, and Cp-Ca compared to females. Class III exhibited significantly lower mean length, AP diameter, and Cp-Ca than Class I and Class II. At the same time, Class II demonstrated a significantly greater mean depth than Class I. Conclusion: This study highlights significant variations in the linear dimensions of the ST across different skeletal malocclusion classes in a Cambodian population. Class III individuals exhibited smaller ST dimensions compared to Class I and II, while Class II showed greater ST depth.