title: Radiographic evaluation on prevalence of Stafne bone defect: a study from two centres in Turkey.
abstract: OBJECTIVE
  The aim of this study was to investigate the frequency of Stafne bone defect (SBD) and to describe the clinical and radiological characteristics of detected cases.
  
  
  METHODS
  A retrospective study was performed using panoramic radiographs from 34 221 patients undergoing dental treatment in the Department of Oral and Maxillofacial Radiology at Erciyes University and Ataturk University, Turkey. After finding an image compatible with SBD in the radiographs, multislice CT (MSCT) on seven patients and cone beam CT (CBCT) on six patients were performed to confirm the diagnosis.
  
  
  RESULTS
  Of the 34 221 patients, 29 (0.08 %) had SBDs, of whom 4 were female (13.8%) and 25 were male (86.2 %). The age range of patients with SBD was 18-77 years (mean age 49.6 years). SBD was found in the lingual molar region in 28 patients and in the lingual canine-premolar region of the mandible in 1 patient. The contour of the concavities on CT images (MSCT and CBCT) was detected. The MSCT revealed glandular tissue within the defects.
  
  
  CONCLUSIONS
  According to our results, SBD is an uncommon anomaly. Examination of MSCT images supports the presence of aberrant submandibular glands within these mandibular defects, suggesting that pressure from submandibular gland tissue had caused the SBD, as generally thought. Both CBCT and MSCT can provide adequate support for the detection of SBDs. The CBCT could be suggested as the most suitable non-invasive diagnostic modality for this bony configuration of the mandible since it provides a lower radiation exposure dose than MSCT.
authors.affiliation: Department of Oral Diagnosis and Radiology, Faculty of Dentistry, Erciyes University, Kayseri, Turkey.
authors.forename: Y
authors.initials: Y
authors.lastname: Sisman
authors.forename: O
authors.initials: O
authors.lastname: Miloglu
authors.forename: A E
authors.initials: AE
authors.lastname: Sekerci
authors.forename: A B
authors.initials: AB
authors.lastname: Yilmaz
authors.forename: O
authors.initials: O
authors.lastname: Demirtas
authors.forename: T T
authors.initials: TT
authors.lastname: Tokmak
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D054893:Cone-Beam Computed Tomography; D005260:Female; D006801:Humans; D007570:Jaw Cysts / Q000000981:diagnostic imaging* / Q000453:epidemiology*; D008297:Male; D008336:Mandibular Diseases / Q000000981:diagnostic imaging* / Q000453:epidemiology*; D008875:Middle Aged; D015995:Prevalence; D011862:Radiography, Panoramic; D012189:Retrospective Studies; D012469:Salivary Glands; D014057:Tomography, X-Ray Computed / Q000379:methods; D014421:Turkey / Q000453:epidemiology; D055815:Young Adult
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