The prediction of the relation between anterior facial skeleton and sella turcica in Iraqi sample

Abstract

Background: The relation between the anterior facial skeleton and sella turcica may vary from individual to individual, and the establishment of normal standards in different skeletal patterns will aid in the process of eliminating any abnormality in such an important region. This study aimed to find the relation of the anterior facial skeleton to the sella turcica in different skeletal patterns and in both gender and also to find the most valid equation for describing these relationships to be applied practically in different skeletal patterns. Materials and method: The sample consisted of “138” digital true lateral cephalometric radiographs related mostly to patients attended to the college of dentistry /Baghdad University with an age range “18-30” years, they classified into three skeletal patterns . Six cephalometric parameters in addition to shape of Sella Turcica were measured and assessed for each individual radiograph using AutoCAD program 2008. Results : The linear measurements that assess the relation of sella turcica to anterior facial skeleton in all skeletal patterns showed a very highly significant gender differences; being larger in males than in females, while for the angular measurements, no gender difference were found. Among the three skeletal patterns only the “S-B Length” and the “ASB angle” showed a very highly significant difference. The Pearson’s correlation test in all skeletal patterns showed a very highly significant positive correlation among “ S-N, S-A & S-B Length ” and among “ NSA, NSB & ASB angles”, however highly predictable regression equations in the three skeletal patterns were found for the first time in Iraq between “ NSB & NSA angles ”. Conclusions: The introduction of valid predictable equations for the first time that can assess the relation between Sella Turcica and anterior facial skeleton in Iraqi sample.