title: Maturation of permanent teeth in different facial types: a comparative study.
abstract: BACKGROUND
  Accurate diagnosis of dental maturation help in diagnosis, treatment planning, and timing in orthodontics and dentofacial orthopedics.
  
  
  OBJECTIVE
  The present study is undertaken to compare and correlate chronological age and dental age of patients with average, vertical, and horizontal facial types, and to find out any sex difference in dental age in different growth patterns and to evaluated the reliability of Willem's method in Indian population.
  
  
  METHODS
  Subjects in the age group of 8-10 years were screened from Out Patients Department of Orthodontics and Dentofacial Orthopedics and from the various school of the City, were subjected to cephalometric radiography and orthopentomograms. Angular and linear measurements used included;-SN Go-Gn angle, J.R. (Jarabak ratio) and LAFH (lower anterior facial height), to group total sample of 150 children. Group 1 (average grower), Group 2 (vertical grower), and Group 3 (horizontal grower). Then dental age for each child in different group was calculated from OPG of each subject and compared with chronological age using Student t-test.
  
  
  RESULTS
  The results suggest a difference in dental age in subject with vertical and horizontal growers. Vertical grower showed earlier maturation compared to horizontal growth patterns. There was insignificant difference present when vertical grower and horizontal grower were compared with average growth pattern. Insignificant difference was found in dental age between males and females when compared to same growth pattern.
  
  
  CONCLUSIONS
  Subjects with vertical growth pattern matured early than having the horizontal growth pattern in the same chronological age.
authors.affiliation: Department of Orthodontics, Daswani Dental College, Kota, Rajasthan, India. dr_goyal1982@yahoo.com
authors.forename: Vikas
authors.initials: V
authors.lastname: Goyal
authors.forename: D N
authors.initials: DN
authors.lastname: Kapoor
authors.forename: Santosh
authors.initials: S
authors.lastname: Kumar
authors.forename: Mahesh
authors.initials: M
authors.lastname: Sagar
mesh_terms: D000366:Age Determination by Teeth; D000375:Aging / Q000502:physiology; D002508:Cephalometry / Q000379:methods; D002648:Child; D005145:Face / Q000033:anatomy & histology*; D005260:Female; D006801:Humans; D007194:India; D008297:Male; D008334:Mandible / Q000254:growth & development; D008445:Maxillofacial Development / Q000502:physiology*; D009666:Nose / Q000254:growth & development; D009805:Odontogenesis / Q000502:physiology*; D011862:Radiography, Panoramic; D012658:Sella Turcica / Q000254:growth & development; D012737:Sex Factors; D014716:Vertical Dimension