title: Validity of demirjian and nolla methods for dental age estimation for Northeastern Turkish children aged 5-16 years old.
abstract: OBJECTIVE
  To evaluate the applicability of Demirjian and Nolla methods for northeastern Turkish population.
  
  
  METHODS
  A retrospective study was performed on panoramic radiographs of 673 subjects aged 5-15.9 years. The mean dental age (DA) according to the Demirjian and Nolla methods were compared to the mean chronological age (CA).
  
  
  RESULTS
  The mean CA of the study sample was 10.37±2.90 and 10.03±2.81 years for females and males, respectively. Using the Demirjian method, the mean estimated DA was 11.26±3.02 years for females and 10.87±2.96 years for males. For Nolla method, the mean estimated DA was 9.80±3.41 and 9.53±3.14 years for females and males, respectively. The mean differences between the CA and DA according to the Demirjian and Nolla methods were 0.86 and -0.54 years for total study sample.
  
  
  CONCLUSIONS
  Nolla method was found to be a more accurate method for estimating DA in northeastern Turkish population.
authors.affiliation: Department of Pedodontics, Karadeniz Technical University, Faculty of Dentistry, Trabzon, Turkey.
authors.forename: Bilge
authors.initials: B
authors.lastname: Nur
authors.forename: Adem
authors.initials: A
authors.lastname: Kusgoz
authors.forename: Mehmet
authors.initials: M
authors.lastname: Bayram
authors.forename: Mevlut
authors.initials: M
authors.lastname: Celikoglu
authors.forename: Metin
authors.initials: M
authors.lastname: Nur
authors.forename: Saadettin
authors.initials: S
authors.lastname: Kayipmaz
authors.forename: Sina
authors.initials: S
authors.lastname: Yildirim
mesh_terms: D000293:Adolescent; D000366:Age Determination by Teeth / Q000379:methods*; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D015203:Reproducibility of Results; D012189:Retrospective Studies; D014421:Turkey