Designing Orthodontic Craniofacial Templates for 8-14 year-old Iranian Girls Based on Cephalometric Norms

Objectives: Cephalometry and its related analyses have an important role in the evaluation of orthodontic patients. Access to an analysis that gives maximum in- formation in the least possible time is an effective way to indicate craniofacial disharmony; therefore, craniofacial templates are very useful tools. The purpose of the present study was to provide orthodontic craniofacial templates for 8-14- year-old Iranian girls. Materials and Methods: One thousand two-hundred and nine girls (age range, 8- 14 years) were examined. Eighty of these cases were finally chosen for the study and their lateral cephalograms were traced. Both Basion-Nasion (Ba-N) and Sella- Nasion (S-N) lines were selected for superimposition in this study. Based on these two mentioned lines, a template for each age was designed. Simple linear regres- sion and multivariant regression analysis were used to evaluate the angles and to landmark the vectors, respectively. Results: Findings show that most points change significantly at different ages in the S-N method. In the Ba-N method, all points except for S and Ba have signifi- cant changes at different ages. Conclusion: Templates that resulted from both methods were the same and altera- tion in the reference line and points does not change the total form of the average tracings of each age.