Expansive Florid Osseus Dysplasia: reports of two unusual cases

Displasia Óssea Florida Expansiva: relatos de dois casos incomuns

Abstract

Osseous dysplasia generally is a radiographic finding because, for the
most part, it does not cause clinical changes. However, a new subtype of
dysplasia that affects primarily middle-aged black women and promotes
expansion of the involved cortical bone has been reported as Expansive
Osseous Dysplasia. The aim of this article is to report two cases of
Florida Osseous Dysplasia with expressive expansion and perforation
of the osseous cortex involved. The first case reports a 46-year-old
black female patient whom was attended at the Naval Dental Center
requiring indirect restoration in one tooth. Clinical examination showed
a hard and increased volume at lingual portion of alveolar ridge in the
region of the lower incisors. In the panoramic radiography two mixed
density images were observed with predominance of radiopaque areas
in the apical region of the anterior inferior teeth and in the first lower
left molar. The computed tomography showed the buccal cortex thinning
and the expansion and perforation of the lingual cortex in the incisor
region. The second case presents a middle-aged brown skin patient who
sought dental care to monitor a mixed lesion in the apical region of the
anterior inferior teeth, lower premolars on both sides and in the third
right lower third molar. In cone beam computed tomography, expansion
and thinning of the vestibular cortex in the anterior inferior teeth were
observed. Based on the current literature and the characteristics of both
lesions, the diagnostic hypothesis was Florida Osseous Dysplasia with
expansive aspect. The patients were advised on the importance of oral
hygiene and the need for an annual follow-up of these lesions.