Maxillary and mandibular dental arch forms in a Jordanian population with normal occlusion

Abstract Background Ethnic background has been claimed to affect arch form. The purpose of this study was describe and elucidate the maxillary mandibular forms in Jordanian population develop a classification method for these which could be employed construct orthodontic archwires accordingly. Methods sample comprised casts five hundred twenty subjects (231 males 289 females with mean age 15.4 ± 1.02 years). All had permanent dentition normal occlusion. A mathematical associated polynomial function 6th degree assess dental forms. resultant were classified into 5 groups both maxilla mandible utilizing computer software special code designed study. Each group subdivided 3 subgroup sizes namely: small, medium, large. Results Catenary form found 47% 41.2% ( p ? 0.01) forms, respectively. Form 2 (which is halfway between ellipse U-shaped form) 27.7% 26.7%. Medium size 55.4% 65.6% Conclusion most prevalent form, followed by wide elliptical other included tudor arch, tapered equilateral quadrangular less frequent. Regarding size, medium among studied samples.