Buccal biffurcation cyst .

  • It is a rare odontogenic cyst that usually affects children from 5 to 10 years old.
  • Most commonly occurs around the mandibular first molar, followed by the mandibular second molar.
  • The associated tooth is vital.
  • Radiographic findings Unilocular radiolucency with well defined borders located in the buccal furcation of the affected tooth.  The lesion causes; expansion, thinning and perforation of the buccal cortical plate. The root tips of the involved tooth are often displaced toward the lingual cortical plate.

Differential Diagnosis

Case 1

Buccal Bifurcation cyst in a boy 6-years old.  The crown of  the mandibular first molar is buccally tilted and the roots are pushed toward the lingual cortical plate.