OBJECTIVE: The clinical, radiographic, and histologic features of the mandibular buccal bifurcation cyst were studied to further define this lesion. The treatment and outcomes were also analyzed. STUDY DESIGN: This prospective study, which spanned 3 years, included 32 patients. Their ages ranged from 5.5 to 11 years (mean of 7.5). A total of 44 buccal bifurcation cysts were treated solely with enucleation, and patients were followed up for 2.5 to 3 years. RESULTS: All lesions were located at the buccal bifurcation of the mandibular first molar. Tilting of the buccal cusps, causing prominence of the lingual cusps, occurred in 75% of the cases. The lesion extended from the buccal bifurcation to the tooth apex in 81.2%, and a periosteal reaction on the lateral surface of the mandible adjacent to the cyst was noted in 68.8% of the cases. All of the 44 histologic reports were nonspecific, but showed a cyst lining of stratified squamous epithelium with chronic inflammation. Microbiology consisted of mixed oral flora. Complete radiographic healing in all sites without recurrence was noted in 2.5-year follow-up. The periodontal pocket depth around all the involved teeth was normalized. No loss of the mandibular first molars occurred. CONCLUSIONS: The mandibular buccal bifurcation cyst is a distinct site-specific and age-specific clinical entity treatable by enucleation without tooth extraction.
OBJECTIVE: The clinical, radiographic, and histologic features of the mandibular buccal bifurcation cyst were studied to further define this lesion. The treatment and outcomes were also analyzed. STUDY DESIGN: This prospective study, which spanned 3 years, included 32 patients. Their ages ranged from 5.5 to 11 years (mean of 7.5). A total of 44 buccal bifurcation cysts were treated solely with enucleation, and patients were followed up for 2.5 to 3 years. RESULTS: All lesions were located at the buccal bifurcation of the mandibular first molar. Tilting of the buccal cusps, causing prominence of the lingual cusps, occurred in 75% of the cases. The lesion extended from the buccal bifurcation to the tooth apex in 81.2%, and a periosteal reaction on the lateral surface of the mandible adjacent to the cyst was noted in 68.8% of the cases. All of the 44 histologic reports were nonspecific, but showed a cyst lining of stratified squamous epithelium with chronic inflammation. Microbiology consisted of mixed oral flora. Complete radiographic healing in all sites without recurrence was noted in 2.5-year follow-up. The periodontal pocket depth around all the involved teeth was normalized. No loss of the mandibular first molars occurred. CONCLUSIONS: The mandibular buccal bifurcation cyst is a distinct site-specific and age-specific clinical entity treatable by enucleation without tooth extraction.
Authors: Lara Maria Alencar Ramos; Pablo Agustin Vargas; Ricardo D Coletta; Oslei Paes de Almeida; Márcio Ajudarte Lopes Journal: Head Neck Pathol Date: 2012-03-06