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Sella turcica bridging and dental anomalies: is there an association?
Andrea Scribante1, Maria Francesca Sfondrini1, Marco Cassani1
1Unit of Orthodontics and Paediatric Dentistry, Section of Dentistry, Department of Clinical, Surgical, Diagnostic and Paediatric Sciences, University of Pavia, Pavia, Italy.
Background:
Sella turcica bridging (STB), or calcification of the interclinoid ligament of sella turcica, has been reported to be associated with some dental anomalies (palatal canine impaction and transposition).
Hypothesis Or Aim:
The aim of the study was to find any association between canine impaction, hyperdontia or hypodontia and sellar dimensions or bridging.
Design:
Lateral cephalometric radiographs from 78 patients with impacted canines, 68 with dental agenesis and 17 with hyperdontia were collected. Linear dimensions of sella turcica were calculated and compared to those of a control group (47 individuals). A standardize scoring scale was used to quantify the extent of STB from each radiographs.
Results:
The frequency of partial and complete calcifications of sella in patients with dental anomalies is increased when compared to controls. STB can influence the interclinoid distance but does not affect other linear dimensions of sella. No statistically significant difference has been found in sellar dimensions and STB expression when evaluating radiographs at different ages.
Conclusions:
STB is frequently found in patients with dental abnormalities.