Variations among the primary maxillary dental arch forms using a polynominal equation model.
This study identifies arch symmetry and describes arch form variations in normal primary maxillary dental casts. Sixty-two percent of casts had asymmetrical arches, and 38% had symmetrical arches. Six types of arch form were identified according to the ratio of arch width to length. There were more long types than short types. The rounded and short types tended to have a more-symmetrical arch than did the long type.
Department of Pedodontics, School of Dentistry, China Medical College, 91 Hsueh Shih Road, Taichung 404, Taiwan, ROC. hunghuey@mail.cmc.edu.tw
Hung-Huey
HH
Tsai
D002508:Cephalometry / Q000706:statistics & numerical data*; D002675:Child, Preschool; D003724:Dental Arch / Q000033:anatomy & histology*; D005146:Facial Asymmetry / Q000175:diagnosis; D005260:Female; D006801:Humans; D008297:Male; D008437:Maxilla / Q000033:anatomy & histology*; D008445:Maxillofacial Development; D008954:Models, Biological; D003765:Models, Dental; D013624:Taiwan; D014094:Tooth, Deciduous