Dentin Hypersensitivity Related to Apical Fenestration

Dentinal hypersensitivity is a common clinical symptom which is caused by multiple factors. Apical anatomic abnormality including apical fenestration could contribute to dentin exposure, thus may lead to tooth sensation. The purpose of the present case report was to describe a case with initial diagnosis of “dentinal hypersensitivity” caused by apical fenestration and confirmed by cone beam computed tomography, suggesting that apical anatomical morphology should be considered after excluding all other obvious possible etiologies in patients with dentinal hypersensitivity.