Cranial Base Morphometric Indices in Sagittal Jaw Malocclusion within Patients Referred to Orthodontic Department of Shahid Sadoughi school of Dentistry

The cranial base plays an important role in craniofacial growth. Since the maxilla is connected with the anterior part of the cranial base and the mandible rotation is influenced by the maxilla, a possible relationship may exist between the cranial base morphometric indices and sagittal jaw malposition. Therefore, the present study aimed to measure cranial base morphometric indices in the patients referred to Shahid Sadoughi faculty of dentistry.

In this descriptive cross-sectional study, 90 files of patients referring to orthodontic department of Shahid Sadoughi Dentistry School were selected which were divided into skeletal classІ (n=30), class П (n=30), class Ш (n=30). The anterior and posterior cranial base lengths (SN,SBa) and the cranial base angles (NSBa, NSAr) were measured. The SPSS software (ver, 16) was applied utilizing mann-whitney test in order to compare the indices between the three groups.

The difference between the NSBa,NSAr mean was statistically significant in three groups, though the anterior and posterior cranial base lengths (SN,SBa) did not show any significant differences.

The study findings demonstrated that the saddle angle (NSAr) was highly related to sagittal malposition of the jaw.