title: Dental anthropology of a Brazilian sample: Frequency of nonmetric traits.
abstract: Dental elements are valuable tools in a study of ancient populations and species, and key-features for human identification; among the dental anthropology field, nonmetric traits, standardized by ASUDAS, are closely related to ancestry. This study aimed to analyze the frequency of six nonmetric traits in a sample from Southeast Brazil, composed by 130 dental casts from individuals aged between 18 and 30, without foreign parents or grandparents. A single examiner observed the presence or absence of shoveling, Carabelli's cusp, fifth cusp, 3-cusped UM2, sixth cusp, and 4-cusped LM2. The frequencies obtained were different from the ones shown by other researches to Amerindian and South American samples, and related to European and sub-Saharan frequencies, showing the influence of this groups in the current Brazilian population. Sexual dimorphism was found in the frequencies of Carabelli's cusp, 3-cusped UM2, and sixth cusp.
authors.affiliation: Department of Forensic Dentistry, Piracicaba Dental School, State University of Campinas, Brazil. Electronic address: racheltinoco@live.com.
authors.forename: Rachel Lima Ribeiro
authors.initials: RL
authors.lastname: Tinoco
authors.affiliation: Department of Forensic Dentistry, Piracicaba Dental School, State University of Campinas, Brazil; Dental School, Federal University of Maranhão, Brazil.
authors.forename: Laíse Nascimento Correia
authors.initials: LN
authors.lastname: Lima
authors.affiliation: Department of Forensic Dentistry, Piracicaba Dental School, State University of Campinas, Brazil; Forensic Dental Expert, Police Department of Maranhão, Brazil.
authors.forename: Fábio
authors.initials: F
authors.lastname: Delwing
authors.affiliation: Department of Forensic Dentistry, Piracicaba Dental School, State University of Campinas, Brazil.
authors.forename: Luiz
authors.initials: L
authors.lastname: Francesquini
authors.affiliation: Department of Forensic Dentistry, Piracicaba Dental School, State University of Campinas, Brazil.
authors.forename: Eduardo
authors.initials: E
authors.lastname: Daruge
mesh_terms: D000293:Adolescent; D000328:Adult; D001938:Brazil; D005006:Ethnicity; D005260:Female; D005553:Forensic Dentistry; D006801:Humans; D008297:Male; D003765:Models, Dental; D044469:Racial Groups; D014070:Tooth / Q000033:anatomy & histology*; D055815:Young Adult
keywords: Ancestry investigation; Dental anthropology; Forensic anthropology; Forensic anthropology population data.; Forensic science; Human identification; Nonmetric traits