title: Alveolar bone height in primary dentition a radiographic evaluation related to caries lesions.
abstract: OBJECTIVE
  This was to evaluate the CEJ-ABC distance in sound and unsound deciduous teeth, according to subject's  age and the presence of caries.
  
  
  METHODS
  
  
  
  METHODS
  cross-sectional study. The study sample  comprised 334 radiographs, the teeth were divided in two groups, according to the interproximal surface characteristics. The  distal surface of the mandibular first deciduous molar and/or the mesial surface of the second mandibular deciduous molar  were analysed.
  
  
  RESULTS
  The average for the CEJ-ABC distance in the distal surface of the mandibular first molar was  different between sound and carious teeth. The same behaviour was observed in the mesial surface of the mandibular second  molar. Both the presence of lesion on the interproximal surface and the subject age exherted influence over the mean CEJ- ABC distance. No interaction between these factors was statistically observed.
  
  
  METHODS
  data were analyzed with SPSS. Two- way ANOVA was used to assess the distance of CEJ-ABC considering the interproximal surface status and age.
  
  
  CONCLUSIONS
  Although the observation that both the interproximal surface status and the age had influence on the CEJ- ABC distance values, in the present study the interaction between these variables was not a determinant for the increase CEJ- ABC distances.
authors.affiliation: Department of Surgery and Orthopedics, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.
authors.forename: S N
authors.initials: SN
authors.lastname: Tarmahomed Sallé
authors.forename: M
authors.initials: M
authors.lastname: Boessio Vizzotto
authors.forename: H E
authors.initials: HE
authors.lastname: Dias Silveira
authors.forename: C
authors.initials: C
authors.lastname: Kuchenbecker Rösing
authors.forename: C
authors.initials: C
authors.lastname: Moreira Pitoni
authors.forename: F
authors.initials: F
authors.lastname: Borba de Araujo
mesh_terms: D000367:Age Factors; D016301:Alveolar Bone Loss / Q000000981:diagnostic imaging; D000539:Alveolar Process / Q000000981:diagnostic imaging*; D002648:Child; D002675:Child, Preschool; D003430:Cross-Sectional Studies; D003731:Dental Caries / Q000000981:diagnostic imaging*; D003743:Dental Enamel / Q000000981:diagnostic imaging; D003804:Dentin / Q000000981:diagnostic imaging; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008963:Molar / Q000000981:diagnostic imaging*; D016300:Radiography, Bitewing; D019252:Radiography, Dental, Digital; D019237:Tooth Cervix / Q000000981:diagnostic imaging; D014094:Tooth, Deciduous / Q000000981:diagnostic imaging*