Solitary bone cyst of the mandible and platelet rich fibrin (PRF)

Introduction. Solitary maxillary or mandibular bone cysts are rare benign lesion. They are usually localized in the mandible of young men. In some cases, a traumatic risk factor can be documented. Observation. A young 13-year-old female patient consulted in the orthodontics unit. An orthopantomogram showed a large cystic lesion in the ramus and posterior part of the left mandible corpus. No reossification of the cavity was observed one year after curettage. A second curettage was performed combined with PRF filling. Six months later, the cavity was completely reossified. Discussion. Curettage is the first line treatment of isolated cystic lesions and generally followed by complete reossification of the cavity. Incomplete healing is observed in 20% of the cases. PRF may induce the healing of non-reossified cystic by supplying local growth factors. (C) 2009 Elsevier Masson SAS. All rights reserved.