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Original Article

J Pak Dent Assoc. 2018; 27(4): 160-164


Omair Majeed, Tabassum Ahsan Quadeer, Maria Habib.



To investigate the relationship between sella bridging and palatal canines as well as to establish the type of calcification of sella common to subjects with impacted canines.
Male and female patients aged above 12 years, presenting to the orthodontic OPD of Bahria University medical and dental college for fixed or removable orthodontic treatment were included in the study. Sella bridging was correlated to impacted canines. The control group included patients having normally erupted canines while subjects included at least one palatally impacted canine. The presence of impacted canines was confirmed on OPG while sellae dimensions were measured on lateral cephalometric radiographs. Data was analyzed and factors such as sella dimensions (length, depth and diameter) as well as degree of calcification and its relation to presence of palatal impacted canines was determined by using independent sample t test, Chi square test and Pearson correlation test.
There were 105 subjects divided into control (71) and subjects (34) groups. The mean interclinoidal distance and sella diameter was reduced in subjects as compared to controls. Type II calcification was dominant in both experimental (76.5) and control (78.9) groups. There was a significant negative correlation found amongst subjects and controls using Pearson correlation. The strength of association was higher among subjects as compared to control group.
Sella bridging is an indicator of palatal impaction of canines as both length and diameter of sella were reduced in experimental subjects. Type II calcification was dominant in both groups.

Key words: Sella Turcica Palatal impactions

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