title: A retrospective analysis of prevalence and characteristics of pre-eruptive intracoronal resorption in unerupted teeth of the permanent dentition: a multicentre study.
abstract: OBJECTIVE
  This multicentred study aimed to investigate the prevalence of pre-eruptive intracoronal resorption (PIR) in unerupted teeth of the permanent dentition using a large sample of panoramic radiographs of a Turkish population.
  
  
  METHODS
  Records of 28 612 patients from three cities in the different regions of Turkey were screened retrospectively in this multicentred study. Patient records and panoramic radiographs were evaluated by three oral and maxillofacial radiologists in the sites. The following data were recorded: age, gender, number of unerupted teeth, number of teeth showing intracoronal resorption, affected tooth type and number of intracoronal resorptions in each case.
  
  
  RESULTS
  Overall, 5554 patients had at least one unerupted tooth in 28 612 patients, with a prevalence of 19.4%. Of the 5554 patients screened, 2267 were female and 3287 were male. Intracoronal resorption was observed in 40 of 5554 subjects, with a frequency of 0.7%. The mean age of the patients was 35.9 years.
  
  
  CONCLUSIONS
  Pre-eruptive intracoronal resorption defects occurred in 40 subjects. Increased awareness and careful radiographic examination of unerupted teeth may improve early detection and treatment of PIR defects.
authors.affiliation: Department of Endodontics, Faculty of Dentistry, Ondokuz Mayıs University, Samsun, Turkey.
authors.forename: I
authors.initials: I
authors.lastname: Uzun
authors.affiliation: Department of Dentomaxillofacial Radiology, Faculty of Dentistry, Ondokuz Mayıs University, Samsun, Turkey.
authors.forename: K
authors.initials: K
authors.lastname: Gunduz
authors.affiliation: Department of Dentomaxillofacial Radiology, Faculty of Dentistry, Ondokuz Mayıs University, Samsun, Turkey.
authors.forename: G
authors.initials: G
authors.lastname: Canitezer
authors.affiliation: Department of Dentomaxillofacial Radiology, Dentistry Center, GATA, Ankara, Turkey.
authors.forename: H
authors.initials: H
authors.lastname: Avsever
authors.affiliation: Department of DentoMaxilloFacial Radiology, Faculty of Dentistry, Ankara University, Besevler, Ankara, Turkey.|Department of DentoMaxilloFacial Radiology, Faculty of Dentistry, Near East University, Mersin, Turkey.
authors.forename: K
authors.initials: K
authors.lastname: Orhan
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D019229:Dentition, Permanent; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D011862:Radiography, Panoramic; D012189:Retrospective Studies; D014091:Tooth Resorption / Q000000981:diagnostic imaging* / Q000453:epidemiology*; D014097:Tooth, Unerupted / Q000000981:diagnostic imaging* / Q000453:epidemiology*; D014421:Turkey / Q000453:epidemiology
keywords: panoramic; permanent dentition; resorption