PMC6159116_01
2-year follow-up showing complete healing of the vestibular area.
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A slight bone defect was still noticed on the buccal area at the site of the bifurcation (Figure 1). Interestingly, the second mandibular molar was mesially tilted and was not able to erupt due to impaction at the distal edge of the first mandibular molar (Figure 1 bis).
PMC6159116_02
Histological slices of the buccal bifurcation cyst, showing a cystic cavity, lined by non-keratinized squamous epithelium with elongated and interconnected rete pegs and inflammatory exocytosis.
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Thus, the diagnostic hypothesis of MBBC was confirmed by this histological analysis (Figure 2).
PMC6159116_03
Extraoral swelling due to bone expansion. The tenderness to palpation and the redness of the extraoral tissue emphasize the inflammatory character of the MBBC.
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Male, 6 years old, was referred to the oral and maxillofacial surgery department of Saint Rafael hospital of Leuven, Belgium, complaining of a painless facial swelling and small extraoral haematoma in the lower left molar area (Figure 3).
The similarity of all three cases can be found in the presence of a well-defined homogeneous radiolucent round area at the vestibular side of the lower first mandibular molar. In all cases, the vestibular cortical plate was fenestrated, showing a periosteal reaction.
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