skeletal morphologic structure of openbite in adult Pakistani sample

ABSTRACT

The purpose of this study was to identify the cephalometric skeletal morphological features of anterior open-bite [AOB] in adult Pakistanis. It was a cross sectional descriptive study having quantitative study design. Lateral cephalograms of 30 pre treatment anterior open-bite patients with the age range 17 to 27 years, coming to the department of Orthodontics were taken [18 females and 12 males]. Subjects of study sample were clinically diagnosed as having open bite.In addition the subjects were considered as having skeletal AOB when SN-GoGn angle was equal to or more than 32.5 degree. Ten linear and angular measurements were recorded. The results showed significantly increased values of linear measurements [PHF, AFH, UFH] and angular measurement[SN-GoGn].One angular measurement[SN-PP] was closer to the mean Caucasian sample values but there was more obliquity to the Gonial angle. The ratio PFH/AFH was small as compared to white anterior AOB subjects. Sexually dimorphic variables were also identified by independent sample t-test