Morphometric analysis of sella turcica in different sagittal malocclusions of south indian population - A retrospective study

Aim: The objective of this study was to assess the shape and size of the sella turcica in a fraction of south Indian population with different skeletal types. Methods: Lateral cephalometric radiographs of 90 individuals (30 males and 60 females) between the age group 10-30 years were taken and distributed according to skeletal types as class I, II, III based on ANB. Morphology was assessed using silvermans method, and dimensions using Axelssons method. Comparison between older and younger age groups was also done. Student’s t test was used to calculate differences in linear dimensions in age group and ANOVA was performed to study relationship between skeletal type and sella size. Results: It was found that majority of subjects had normal morphology of sella, significant differences were found between older and younger age groups and between skeletal types and sella size. Conclusions: Approximately 66 percent of the subjects had a normal Sella shape. Significant differences in Sella size between the older (15 years or more) and younger (10-14 years) age groups were founded for all three linear dimensions (length, depth, diameter), Sella size in the older age groups were larger. Significant differences in Sella Turcica size in all three dimensions was found for different skeletal classes. Class III subjects had the greatest dimensions while class II subjects had the smallest dimensions.