ABSTRACT
The aim of this study was to assess and compare the dimensions of Sella Turcica in 90 subjects grouped as Group A [Skeletal Class I:ANB0-4°, Wits value -1 to 0.5 mm][1.4] and Group B [Skeletal Class II:ANB>4°, Wits value >0.5 mm] aged 14-30 years each having 45 subjects. For Group A Width [W] of Sella Turcica[10] is found to be 15.33 mm + 2.77 S.D, Depth [D] 6.43 mm + 1.45 S.D, Area [A] 66.05 mm[2] + 9.2 S.D, Specific Dimension [SDim] 99.5 mm[2] + 27.7 S.D and Interclinoid Distance [I] as 5.55 +2.12 S.D while for Group B Width [W] of Sella Turcica is found to be 14.55 mm+2.16S.D, Depth [D] 6.45 mm+0.9 S.D, Area [A] 60.35 mm[2]+7.96 S.D, Specific Dimension [SDim] 94.4 mm[2]+21.56 S.D and Interclinoid Distance [I] as 4.85 mm+0.93 S.D. When two groups were compared for Sellar Dimensions, Width, Area and Interclinoid Distance showed statistically significant difference between the Skeletal Class II and Skeletal Class I subjects [P<0.05] while Vertical Depth and Specific Dimension showed statistically insignificant difference [P>0.05]. Moreover these findings appear to indicate the greater likelihood of Sella Turcica bridging in Skeletal Class II patients