MANAGEMENT OF RADICULAR CYST IN FAMILIAL HYPOPHOSPHATEMIC RICKETS USING LEUKOCYTE- AND PLATELET-RICH FIBRIN MEMBRANE

Familial hypophosphatemic rickets (FHR) substantially affects the process of bone remodeling. A 17-year-old male patient with FHR was seen in dental service complaining of mobility of tooth 11. The patient had suffered a trauma in the anterior region of the maxilla 3 years ago. He had received adequate immediate treatment but did not return for follow-up consultations. Clinically, he presented crown darkening and tooth mobility. Radiographically, a well-defined unilocular lesion of 2 cm was observed, suggestive of a periapical cyst. Paraendodontic surgery was performed to remove the root fragments and the lesion, followed by the local application of leukocyte- and platelet-rich fibrin membrane. Histopathologic examination confirmed the diagnosis of periapical cyst. A satisfactory bone repair was observed after 10 months. This case report highlights the importance of alternative surgical therapies in challenging conditions, such as patients with FHR.