title: Root number determination in maxillary first premolars for modern human populations.
abstract: It is suggested that multiple root number of the maxillary first premolar be defined on the basis of lingual and buccal-root bifurcation greater than one-fourth to one-third (25%--33%) the buccal-root length. This meets pragmatic considerations and would enhance comparability of between-observer findings for an apparently independent trait of potential importance for population characterization, forensic identification, and microevolutionary analysis.
mesh_terms: D001641:Bicuspid / Q000033:anatomy & histology*; D006801:Humans; D008437:Maxilla; D044469:Racial Groups; D014092:Tooth Root / Q000033:anatomy & histology*