Buccal Bifurcation Cyst

Definition: A buccal bifurcation cyst is an uncommon cyst of the mandibular molars. It is most commonly found in individuals under the age of 20. Other names it is referred as include a paradental cyst and mandibular infected buccal cyst.

Radiographic Features:

Location: Furcation region.  Most commonly associated with a permanent first mandibular molar.  Less commonly associated with second and third molars.

Edge: Well-defined to well-localized.

Shape: Round to ovoid.

Internal: Radiolucent, unilocular.

Other: The adjacent teeth are vital and will be tipped with the roots towards the lingual.  This will be evident in the mouth as the lingual cusps will appear higher than the buccal cusps.  It may displace or resorb adjacent teeth as it enlarges.

Number: Single.

Buccal Bifurcation Cyst

(note the arrow indicating roots being ‘pushed’ towards the lingual cortical plate)

Buccal Bifurcation Cyst

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