title: [Root resorption and orthodontic treatment].
abstract: BACKGROUND
  The aim of our study was to investigate the prevalence of root resorption during and at the end of orthodontic treatment and to assess its relationship with age, sex and treatment with or without extractions.
  
  
  METHODS
  Our study included 82 patients (51 women and 31 men) aged between 6 and 38 years, who received orthodontic treatment. Evaluation of root resorption was performed on panoramics at the beginning and at the end of orthodontic treatment. All the teeth were observed. The degree of root resorption was increased respectively by the standards in four ordinal levels (4). Data analysis was performed by Epi Info 6.0.
  
  
  RESULTS
  Root resorption was present in all the teeth and maxillary incisors are the most affected. The correlation between age and root resorption was significant (p = 0.008). Women were more affected by resorption (P = 0.002). Patients treated with extraction showed more root resorption (p = 0.12).
  
  
  CONCLUSIONS
  Our results suggest that orthodontic treatment is involved in the development of root resorption. The most often teeth resorbed are maxillary incisors. Age, sex and orthodontic extractions can be considered as risk factors for root resorption.
authors.forename: M
authors.initials: M
authors.lastname: Sebbar
authors.forename: F
authors.initials: F
authors.lastname: Bourzgui
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D001641:Bicuspid / Q000000981:diagnostic imaging; D002648:Child; D003481:Cuspid / Q000000981:diagnostic imaging; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007180:Incisor / Q000000981:diagnostic imaging; D008297:Male; D008334:Mandible; D008437:Maxilla; D008963:Molar / Q000000981:diagnostic imaging; D011862:Radiography, Panoramic / Q000379:methods; D012189:Retrospective Studies; D012307:Risk Factors; D012391:Root Resorption / Q000000981:diagnostic imaging / Q000209:etiology*; D012737:Sex Factors; D014081:Tooth Extraction; D014087:Tooth Movement Techniques / Q000009:adverse effects* / Q000295:instrumentation; D055815:Young Adult