title: Prevalence of crown fractures in 8-10 years old schoolchildren in Canoas, Brazil.
abstract: The objective of this work was to evaluate the prevalence of children with crown fractures in permanent anterior teeth in 206 schoolchildren (104 girls and 102 boys) between the ages of 8 and 10 years, enrolled in three public schools in the city of Canoas, Brazil. The prevalence found was 17% with no significant difference between boys and girls, as well as between the ages. The most affected tooth was the maxillary central incisor, and a majority of the children showed only one affected tooth (88.6%). The types of fracture most commonly found were oblique and horizontal, and the portions of dental structures most affected were 'enamel only' and 'enamel and dentin'. Only seven children (20%) sought out dental treatment.
authors.affiliation: Universidade Luterana do Brazil, ULBRA Canoas, Rio Grande do Sul, Brazil. maxftovo@cpovo.net
authors.forename: Maximiano Ferreira
authors.initials: MF
authors.lastname: Tovo
authors.forename: Patricia Roth
authors.initials: PR
authors.lastname: dos Santos
authors.forename: Paulo Floriani
authors.initials: PF
authors.lastname: Kramer
authors.forename: Carlos Alberto
authors.initials: CA
authors.lastname: Feldens
authors.forename: Gilberto Timm
authors.initials: GT
authors.lastname: Sari
mesh_terms: D000367:Age Factors; D001938:Brazil / Q000453:epidemiology; D002648:Child; D003743:Dental Enamel / Q000293:injuries; D003804:Dentin / Q000293:injuries; D005260:Female; D006801:Humans; D007180:Incisor / Q000293:injuries; D008297:Male; D008334:Mandible; D008437:Maxilla; D015995:Prevalence; D012737:Sex Factors; D019228:Tooth Crown / Q000293:injuries*; D014082:Tooth Fractures / Q000453:epidemiology*; D014504:Urban Health / Q000706:statistics & numerical data