Simple bone cyst: Description of 60 cases seen at a brazilian school of dentistry and review of international literature

Abstract

Background: The aim of this study was to describe the relative frequency and the main demographic and clin-ic-radiographic features related to patients diagnosed with Simple bone cyst (SBC) in an Oral Diagnosis Service in Southeast Brazil and present a review and discussion of international literature on this topic. Material and Methods: SBC cases from our service encompassing the period between 1978 and 2017 were select-ed. In addition, a literature search was performed in the Pubmed/MEDLINE online electronic database published between 1951 and 2019. Results: A total of 2,459 cystic lesions were documented in our service, thus 60 patients were diagnosed with the SBC representing 2.4% of all jaw cystic. Most of cases were asymptomatic. Multiple SBC lesions were seen in two patients (3.4%) and association with cemento-osseous dysplasia was seen in one female patient (1.7%). A total of 793 cases were enrolled in this literature review. Conclusions: The SBC is an asymptomatic lesion often discovered in routine image exams in young patients. The unilocular, well defined margin with scalloped appearance is characteristic and helps the definition of diagnosis. This review suggests a different epidemiologic trend concerning to the sex and it confirms the posterior region of mandible as the more frequent location. The conservative treatment with limited exploration and curettage remains as the gold-standard treatment.