Lingual Cortical Mandibular Bone Depression: Frequency and Clinical-Radiological Features in a Brazilian Population

Abstract

The aim of this study was to report the frequency and clinical-radiological features of cases of lingual cortical mandibular bone depressions (LCMBD) diagnosed in consecutive panoramic radiographs and cone-beam computed tomography (CBCT) scans from a Brazilian population. The methods included a retrospective analysis of consecutive panoramic radiographs, charts from the Oral Medicine clinic and consecutive CBCT scans. All cases diagnosed as LCMBD were selected and clinical-radiological data were retrieved from the clinical charts and by the analysis of the image exams. Twenty LCMBD cases diagnosed in 18 patients were found, including 2 from 3,000 consecutive panoramic radiographs (0.07%), 6 from 2,421 Oral Medicine patients (0.25%) and 10 from 1,684 CBCT scans (0.59%). The 18 patients had a mean age of 51.5 years and 13 were males. Two patients presented bilateral lesions. Fourteen images (70%) were classified as well-defined. Eighteen affected the posterior area of the mandible and two affected the anterior mandible. Size of the lesions was larger in younger patients. In conclusion, there seemed to be a considerable radiological heterogeneity when comparing the LCMBD cases and it seemed that the images decreased in size with the increase of patient's age.

Radiographic features of lingual mandibular bone depression using dental cone beam computed tomography

“…The ratio was slightly higher than those reported in previous studies (M/F ranges from 6:1-1:1). 7,19 Expanding our cases to those with and without CBCT images, M/F ratio of the first retrieved 120 cases was 6:1.…”

“…1 Since then, there have been many articles about the condition. There are several synonyms for the condition, including Stafne bone cyst or cavity, 2 Stafne's idiopathic bone cavity or cyst, 3,4 static bone cavity, 5 lingual mandibular salivary gland depression, 6 lingual cortical mandibular bone depression, 7 and combinations of the above. The most common location is below the mandibular canal, within the submandibular salivary gland fossa and often close to the inferior border of the mandible, but it can also be found in the anterior part of the mandible.…”

Stafnea�(TM)s bone defect in a metastatic prostate cancer patient: A diagnostic conundrum

“…A variable prevalence of SBDs has been reported in general population and can range from 0.07 to 0.48% in radiographic studies, configuring an uncommon condition ( 6 ). More frequently, adult male patients in the 5th and 6th decades of life are affected by SBDs, similarly to the current case ( 6 ). Location can vary from the body and angle until first molars ( 3 ) to the region before premolars ( 4 ).…”

“…SBDs are usually well-defined unilocular radiolucencies comprising the posterior part of body or angle of mandible ( 3 ), although anterior cases have been also reported ( 4 ). Panoramic radiographs in addition to clinical features are usually sufficient for the diagnosis of classical cases; however, computed tomography (CT) can be helpful to demonstrate the bone lingual depression ( 5 , 6 ). Less commonly, sialography ( 7 ), as well as surgical exploration ( 3 ), can be used to confirm the presence of salivary gland tissue in regard to characterize SBD.…”

Stafne’s Bone Defect in Atypical Location: Between the Subcondylar Region and Neck of the Mandible Ramus

“…This theory could also explain the existence of anterior defects associated with the sublingual glands and defects in the ascending branches associated with the parotid glands [2] [5].…”