title: Pulp calcification in traumatized primary teeth: prevalence and associated factors.
abstract: OBJECTIVE
  To establish the prevalence of pulp calcifications in 946 patients at the Research and Clinical Center of Dental Trauma in Primary Teeth.
  
  
  METHODS
  The clinical and radiographic records of l675 traumatized primary teeth were evaluated. Statistical analysis was performed using chi-square and univariate logistic regression.
  
  
  RESULTS
  197 (20.8%) patients showed pulp calcification (PC). A total of 250 (14.9%) calcified teeth were observed In most teeth, PC appeared within the first 12 months following trauma. PC prevalence was higher in cases of repeated trauma (29.6%) than in single trauma (16.4%), p < 0.05, with a 2.14 chance of showing pulp calcification when a child suffered recurrent trauma. Most teeth showing calcified pulp, suffered trauma to the supportive tissue (67.4%), being statistically significant in relation to the trauma to dental tissue (p < 0.05).
  
  
  CONCLUSIONS
  PC is a sequelae in cases of trauma to the primary dentition; teeth that suffered recurrent traumatic injuries show higher risk of presenting.
authors: Faculdade de Odontologia da Universidade de São Paulo, Departamento de Ortodontia e Odontopediatria, Av. Prof. Lineu Prestes, 2227-Cidade Universitária, CEP: 05508-900, São Paulo, SP, Brasil. acvmello@usp.br
authors: A C V
authors: AC
authors: Mello-Moura
authors: G A V C
authors: GA
authors: Bonini
authors: C G D C
authors: CG
authors: Zardetto
authors: C R M D
authors: CR
authors: Rodrigues
authors: M T
authors: MT
authors: Wanderley
mesh_terms: D000367:Age Factors; D001938:Brazil / Q000453:epidemiology; D016009:Chi-Square Distribution; D002648:Child; D002675:Child, Preschool; D003784:Dental Pulp Calcification / Q000453:epidemiology / Q000209:etiology*; D005260:Female; D006801:Humans; D007223:Infant; D016015:Logistic Models; D008297:Male; D015995:Prevalence; D013997:Time Factors; D018677:Tooth Injuries / Q000150:complications*; D014094:Tooth, Deciduous