Nasolacrimal duct disease secondary to an unerupted tooth in a dog

Abstract

A 5-year-old male neutered Lurcher was evaluated for left-sided epiphora of 4 months' duration and persistence following topical treatment and nasolacrimal duct irrigation. Physical examination revealed a missing left maxillary canine tooth, and CT dacryocystorhinography showed extrinsic compression of the left lacrimal duct and adjacent nasal turbinates caused by an impacted maxillary canine tooth. Further irrigation was successful in clearing debris from the nasolacrimal duct and temporarily relieving the patient of epiphora; however, surgical extraction of the tooth and radiographic monitoring was declined by the owner. Ophthalmic disorders may be secondary to overlooked dental conditions. This case describes the importance of inspecting the oral cavity as part of a general physical examination when presented with ocular signs, as well as assessing impacted teeth for evidence of pathology, and being aware of sequelae to dental impaction when advising clients on case management.