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Ciência Rural

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LUCENA, Ricardo Barbosa et al. Bacterial conjunctivitis secondary to dental disease in chinchillas (Chinchilla lanigera). Cienc. Rural [online]. 2012, vol.42, n.11, pp.2034-2036. ISSN 0103-8478.

Three cases of bacterial conjunctivitis associated with severe dental disease in chinchillas are described. All affected chinchillas had a history of weight loss, ptyalism, and epiphora which progressed to suppurative ocular exsudation. At necropsy incisor and molar teeth revealed marked elongation of the clinical crown and overgrowth of the dental apexes resulting in deformation of the tear ducts. Histologically, there was neutrophilic infiltrate in the conjunctiva and eyelid skin. Microbiological culture carried out in samples from the ocular exsudate yielded Staphylococcus coagulase-positive. Compression of the lacrimal duct by dental overgrowth compromised tear draining and resulting in epiphora. This is a major predisposing factor inducing bacterial ocular infection in chinchillas.

Keywords : malocclusion; tooth; rodents; nasolacrimal; pathology.

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