Résumé
This study was aimed to analyze cephalometric norms in Pakistani population in comparison with the standards of European-American Adults. Cross sectional study. This study was carried out at Dental OPD Department of Orthodontic Dentistry Liaquat University Hospital Hyderabad/Jamshoro from August 2012 to December 2012. Cephalometric norms were analyzed on a sample of 60 patients, with full complement of permanent teeth and no previous orthodontic treatment. The consent was taken and the patients were informed for the amount of radiation exposure related to cephalometric radiography. Lateral cephalometric radiographs of the patients were exposed in centric occlusion. The cephalometric radiographs of patients were traced manually on acetate papers. Each radiograph of the patient was traced at the same sitting to minimize tracing errors. In this study nasolabial angles were measured for comparison with European-American Adults. The database of study sample measurements was developed in SPSS version 17. The arithmetic mean, range and standard deviation for all the concerned variables were determined using the above-mentioned software with the help of SPSS processor. P value < 0.05 was considered significant. The results suggest that the study sample comprised of [53.3%] males and 28 [46.7%] females. Nasolabial angle of the patients were statistically analyzed and the minimum angle noted was 90 degree, maximum was 150 degree, mean angle was 108.45 degree and standard deviation was 10.98 degrees [p < 0.001]. Females showed more sharp nasolabial angles [p < 0.01]. Comparisons revealed statistically significant differences in cephalometric norms between the study population in comparison to standers of European-American population