title: Behavior in vitro of the dentin-enamel junction in human premolars submitted to high temperatures: prediction of the maximum temperature based on logistic regression analysis.
abstract: OBJECTIVE
  The aim of the study was to provide scientific evidence that would permit DEJ separation to be used as a parameter to estimate the temperature to which burnt, carbonized or incinerated cadavers or human remains had been subjected.
  
  
  METHODS
  A descriptive pseudo-experimental study was carried out in vitro using cone beam tomography to determine the physical behavior of the dentine-enamel junction in 60 human premolars submitted to high temperatures (200°C, 400°C, 600°C, 800°C and 1000°C).
  
  
  RESULTS
  Spearman's concordance and correlation index was used to determine the relationship between longitudinal separation of the dentine-enamel junction (mm) and temperature (°C) and a simple linear regression model developed to show that once micro- and macrostructural changes are initiated in the enamel and dentine.
  
  
  CONCLUSIONS
  The dentine-enamel junction begins to separate from the cervical towards the occlusal as temperature increases.
authors.affiliation: School of Dentistry, Universidad del Valle, Cali, Colombia.
authors.forename: C
authors.initials: C
authors.lastname: Mejía
authors.affiliation: School of Dentistry, Universidad del Valle, Cali, Colombia.
authors.forename: A
authors.initials: A
authors.lastname: Herrera
authors.affiliation: Faculty of Health Sciences, Pontificia Universidad Javeriana, Cali Colombia.
authors.forename: A I
authors.initials: AI
authors.lastname: Sánchez
authors.affiliation: Basic Sciences of Health, Faculty of Health Sciences, Pontificia Universidad Javeriana, Cali Colombia.
authors.forename: S
authors.initials: S
authors.lastname: Moreno
authors.affiliation: Basic Sciences of Health, Faculty of Health Sciences, Pontificia Universidad Javeriana, Cali Colombia.
authors.forename: F
authors.initials: F
authors.lastname: Moreno
mesh_terms: D001641:Bicuspid / Q000000981:diagnostic imaging* / Q000473:pathology; D054893:Cone-Beam Computed Tomography; D003430:Cross-Sectional Studies; D003743:Dental Enamel / Q000000981:diagnostic imaging* / Q000473:pathology; D003804:Dentin / Q000000981:diagnostic imaging* / Q000473:pathology; D005553:Forensic Dentistry; D006358:Hot Temperature; D006801:Humans; D021621:Imaging, Three-Dimensional; D066298:In Vitro Techniques; D016015:Logistic Models; D010781:Photography