title: Dental maturity amongst various vertical and sagittal facial patterns.
abstract: OBJECTIVE
  To compare the mean dental maturity amongst three vertical facial patterns (short, average and long anterior facial heights) and also amongst two sagittal facial patterns (skeletal class I and II) in orthodontic patients.
  
  
  METHODS
  Cross-sectional analytical study.
  
  
  METHODS
  The Aga Khan University Hospital, Karachi, from August to October 2008.
  
  
  METHODS
  Data was retrospectively retrieved from pretreatment orthodontic records of patients who visited the orthodontic clinic. The sample was divided into three vertical groups, namely short, average and long anterior facial types, and two sagittal groups, namely skeletal class I and II. Dental development was assessed using the Demirjian's system. One way ANOVA and independent sample t-test were used to find any difference in dental maturity amongst vertical and sagittal facial patterns, respectively.
  
  
  RESULTS
  There was no statistically significant difference in dental maturity amongst the three vertical facial patterns (p=0.111) and also amongst the two sagittal groups (p=0.975). Statistically significant gender dimorphism (p < 0.001) was seen amongst boys and girls for dental maturity with girls being more advanced than boys in their dental development.
  
  
  CONCLUSIONS
  Dental maturation in the three vertical and the two sagittal groups showed no statistically significant difference in our studied population sample and thus need no variations in treatment initiation timings. However, girls should be treated earlier as they are dentally more advanced than boys.
authors.affiliation: Department of Dental Surgery, The Aga Khan University Hospital, Karachi.
authors.forename: Rashna H
authors.initials: RH
authors.lastname: Sukhia
authors.forename: Mubassar
authors.initials: M
authors.lastname: Fida
mesh_terms: D000293:Adolescent; D000366:Age Determination by Teeth; D000367:Age Factors; D000704:Analysis of Variance; D002508:Cephalometry; D002648:Child; D003430:Cross-Sectional Studies; D005145:Face / Q000033:anatomy & histology*; D005260:Female; D006305:Health Status Indicators; D006801:Humans; D008297:Male; D008445:Maxillofacial Development / Q000502:physiology*; D009805:Odontogenesis / Q000502:physiology*; D012189:Retrospective Studies; D012737:Sex Factors; D013997:Time Factors; D014070:Tooth / Q000254:growth & development*; D014716:Vertical Dimension