Radiographically, they are small unilocular or larger multilocular well defined non-corticated radiolucencies, triangular or crescent in shape, with the base apically between adjacent roots of vital teeth.
SOT should be suspected where isolated periodontal defects occur without obvious risk factors.
[2] Lesions are non-encapsulated with islands of well differentiated squamous epithelium that commonly contain microcysts and calcifications in a dense fibrous connective tissue stroma.
The pathogenesis is unclear but they appear to arise from the gingival epithelium or cell rests of Malassez or Serres.
This presentation is similar to that of squamous cell carcinomas; however, the epithelium of SOT is highly differentiated.