BUCCAL BIFURCATION CYST: A REPORT OF 2 CASES

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Buccal bifurcation cyst (BBC) is an uncommon inflammatory odontogenic cyst, often affecting the buccal region of the permanent mandibular first molars in pediatric patients. Diagnosis is primarily based on strict correlation of the clinical, imaginologic, and microscopic findings. Case 1: A 13-year-old male patient was referred after presenting with a nodular swelling with several months of evolution. Imaginologic analysis showed a well-delimited vestibular cortical bone expansion at the level of tooth #47. Case 2: An 11-year-old male patient was referred after presenting with a swelling with 6 months of evolution at the level of tooth #36. Computed tomography showed a vestibular expansive, hypodense lesion, with cortical bone preservation. In both cases, excisional biopsy with tooth preservation was performed. In the follow-up, healthy periodontium of the involved teeth was observed. In both cases, after clinicopathologic correlation, a BBC diagnosis was made. BBC should be considered in the differential diagnosis of expansive cystic or benign lesions affecting permanent mandibular molars. Buccal bifurcation cyst (BBC) is an uncommon inflammatory odontogenic cyst, often affecting the buccal region of the permanent mandibular first molars in pediatric patients. Diagnosis is primarily based on strict correlation of the clinical, imaginologic, and microscopic findings. Case 1: A 13-year-old male patient was referred after presenting with a nodular swelling with several months of evolution. Imaginologic analysis showed a well-delimited vestibular cortical bone expansion at the level of tooth #47. Case 2: An 11-year-old male patient was referred after presenting with a swelling with 6 months of evolution at the level of tooth #36. Computed tomography showed a vestibular expansive, hypodense lesion, with cortical bone preservation. In both cases, excisional biopsy with tooth preservation was performed. In the follow-up, healthy periodontium of the involved teeth was observed. In both cases, after clinicopathologic correlation, a BBC diagnosis was made. BBC should be considered in the differential diagnosis of expansive cystic or benign lesions affecting permanent mandibular molars.