Abstract
Objectives: The craniofacial characteristics of Bangladeshi adults were investigated in order to formulate cephalometric norms using Bjork-Jarabak's angular and linear measurements and to compare their mean differences with the established values of Bjork-Jarabak's cephalometric norms.
Materials and Methods: One hundred (100) standardized lateral cephalometric radiographs of Bangladeshi adults including 50 males and 50 females with an average age of 20 years were studied. The criteria of selection were Class I incisor relationship with no crowding, no skeletal abnormality or deformity, and no previous orthodontic treatment. All cephalometric landmarks were located and determined and subsequently tracings were done according to Bjork-Jarabak's analysis.
Results: The results of the present study revealed a statistically significant difference between the genders on almost all measured values. Bangladeshi male showed significantly larger saddle angle, articular angle, gonial angle, mandibular body length, SNA, SNB, L1 to mandibular plane angle, inter incisal angle and anterior facial height than those of the Bangladeshi females. Mean values of cephalometric norms of Bangladeshi adults were very much different than the Bjork-Jarabak's established cephalometric norms.
Conclusion: In summary, the results revealed significant linear and angular differences in craniofacial morphology between Bjork-Jarabak's norms and Bangladeshi adults, as well as among Bangladeshi males and females. This data can be a useful reference of cephalometric norms of Bangladeshi adults.