title: Correlation between cervical vertebral maturation and chronological age in a group of Iranian females.
abstract: BACKGROUND
  Correlation between chronological age at different stages of cervical vertebral maturation (CVM) is important in clinical orthodontic practice. The objective of this study was to evaluate the correlation between CVM stage and chronological age in a group of Iranian female patients.
  
  
  METHODS
  This study was conducted on 196 digital lateral cephalometry of female patients with the age ranged 9-14 years. The CVM stage was determined with two calibrated examiners, using the method developed by Baccetti and its correlation with mean chronological age was assessed by the Spearman rank-order. The intra and inter-agreements were evaluated by weighted Kappa statistics in overall diagnosis of stages, in addition to determination of presence or absent of concavities at the lower border of second, third and fourth cervical vertebrae and the shapes of the third and fourth vertebrae. P < 0.05 was considered as significant.
  
  
  RESULTS
  The correlation coefficient between CVM stages and chronological age was relatively low (r = 0.62). The least amount of inter-observer agreement was determined to be at the clinical decision of the shape of the fourth vertebra.
  
  
  CONCLUSIONS
  Regarding the low reported correlation, the concomitant usage of other skeletal indicators seems necessary for precise determination of physiological age of the patients.
authors.affiliation: Dental Research Center, Research Institute of Dental Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
authors.forename: Seyed Mohammadreza
authors.initials: SM
authors.lastname: Safavi
authors.affiliation: Dentofacial Deformities Research Center, Research Institute of Dental Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
authors.forename: Hanie
authors.initials: H
authors.lastname: Beikaii
authors.affiliation: Preventive Research Center, Research Institute of Dental Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
authors.forename: Raheleh
authors.initials: R
authors.lastname: Hassanizadeh
authors.affiliation: Dentofacial Deformities Research Center, Research Institute of Dental Sciences, Department of Orthodontics, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
authors.forename: Farnaz
authors.initials: F
authors.lastname: Younessian
authors.affiliation: Proteomics Research Center, Department of Basic Sciences, School of Rehabilitation Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
authors.forename: Alireza Akbarzadeh
authors.initials: AA
authors.lastname: Baghban
keywords: Cervical vertebral; chronological age; growth and development; lateral cephalometry