title: [Prevalence and clinical characteristics of oral bony outgrowth in a Moroccan population].
abstract: OBJECTIVE
  Oral bony outgrowths (OBOs) are localized bony protuberances that arise from the cortical plate. Various types of OBOs have been described, the precise designation of which depends on anatomic location such as torus palatinus, torus mandibularis, buccal exostosis, or palatal exostosis. We had for aim to determine the prevalence and clinical characteristics of OBOs in a Moroccan population.
  
  
  METHODS
  This cross-sectional study was conducted between March 15 and June 30, 2011 at the Rabat-Salé teaching hospital dental consultation and treatment center, in Morocco. Three hundred and fifty-three patients (160 female and 193 male patients), 11 to 82 years of age, were examined clinically and radiologically to determine the presence of OBO.
  
  
  RESULTS
  Twenty-four patients (6.8%) presented with OBOs. The prevalence for exostosis, torus mandibularis, torus palatinus, and associated OBOs was 3.1%, 2%, 0.8%, and 0.9% respectively. There was a significant difference (P=0,01) between the average age for patients presenting with OBO (43.2±12 years of age) and the average age for patients without any OBO (36.5±16 years of age). The prevalence of OBOs in female patients (7.3%) was higher than in male patients (6.3%) but the difference was not significant (P=0.439). Patients with occlusal parafunctional activity presented with significantly more OBO (P=0.016).
  
  
  CONCLUSIONS
  The reported prevalence of OBO is extremely variable, according to age, gender, and ethnic group. The occurrence of OBO could be triggered by genetic factors associated with environmental factors.
authors.affiliation: Service d'orthopédie dento-faciale, faculté de médecine dentaire de Rabat, université Mohamed V Souissi, centre de consultation et de traitements dentaires, centre hospitalier Ibn-Sina Rabat-Salé, avenue Allal-el-Fassi, rue Mohammed-Jazouli, cité Al-Irfane, BP 6212, Rabat Instituts, Maroc. Electronic address: oualalou@hotmail.com.
authors.forename: Y
authors.initials: Y
authors.lastname: Oualalou
authors.affiliation: Service d'orthopédie dento-faciale, faculté de médecine dentaire de Rabat, université Mohamed V Souissi, centre de consultation et de traitements dentaires, centre hospitalier Ibn-Sina Rabat-Salé, avenue Allal-el-Fassi, rue Mohammed-Jazouli, cité Al-Irfane, BP 6212, Rabat Instituts, Maroc; Laboratoire de biostatistique et de recherche clinique et épidémiologie, faculté de médecine et pharmacie de Rabat, Rabat, Maroc.
authors.forename: M F
authors.initials: MF
authors.lastname: Azaroual
authors.affiliation: Service d'orthopédie dento-faciale, faculté de médecine dentaire de Rabat, université Mohamed V Souissi, centre de consultation et de traitements dentaires, centre hospitalier Ibn-Sina Rabat-Salé, avenue Allal-el-Fassi, rue Mohammed-Jazouli, cité Al-Irfane, BP 6212, Rabat Instituts, Maroc.
authors.forename: F
authors.initials: F
authors.lastname: Zaoui
authors.affiliation: Laboratoire de biostatistique et de recherche clinique et épidémiologie, faculté de médecine et pharmacie de Rabat, Rabat, Maroc; Service d'odontologie chirurgicale, CCTD-CH Ibn-Sina Rabat-Salé, Rabat, Maroc.
authors.forename: S
authors.initials: S
authors.lastname: Chbicheb
authors.affiliation: Service de prothèse adjointe, CCTD-CH Ibn-Sina Rabat-Salé, Rabat, Maroc.
authors.forename: S
authors.initials: S
authors.lastname: Berrada
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001859:Bone Neoplasms / Q000453:epidemiology; D002648:Child; D003430:Cross-Sectional Studies; D005096:Exostoses / Q000453:epidemiology*; D005260:Female; D006784:Hospitals, Teaching; D006801:Humans; D008297:Male; D008336:Mandibular Diseases / Q000453:epidemiology*; D008439:Maxillary Diseases / Q000453:epidemiology*; D008875:Middle Aged; D009018:Morocco / Q000453:epidemiology; D015831:Osteochondroma / Q000453:epidemiology; D010159:Palate / Q000473:pathology; D015995:Prevalence; D055815:Young Adult
keywords: Cavité buccale; Exostoses; Exostosis; Maroc; Morocco; Oral cavity; Prevalence; Prévalence