Defeito ósseo de Stafne em região anterior associado a reabsorção radicular externa: relato de um caso raro

Abstract

Stafne bone defect (SBD) is an uncommon lingual bone depression usually asymptomatic that often occur near the angle of the mandible below the mandibular canal. Due to the rare anterior localization this article describes a 37-years-old female with radiographic images that revealed well-defined unilocular radiolucent lesion below the apices of the lower left incisors, canine and adjacente to first premolar, with root resorption of the canine. Intraoral examination showed non-carious teeth and positive vitality tests. Cone beam computed tomography revealed an invagination of the lingual cortex, well corticated, which reaches the buccal cortex, extending from first premolar to central incisor tooth in the inferior left side. Lateral incisor presented mild apical resorption while canine tooth presented severe root resorption. Incisional biopsy was performed and microscopic examination showed the presence of salivary gland tissue. The diagnosis was anterior SBD associated with external apical root resorption and the article discuss the hypothesis for the pathogenesis of this unique finding.