The chorda tympani nerve provides parasympathetic innervation to the submandibular gland and is pivotal in basal salivary production.1 Adequate salivation is critical to oral health, and gland hypofunction may lead to xerostomia, increasing the risk of dental disease.2 In cochlear implant (CI) surgery, the chorda tympani nerve is at risk when opening the facial recess and may intentionally or unintentionally be sacrificed. Although dysgeusia is discussed,3 to our knowledge, there is a lack of literature regarding the association of middle ear surgery with salivation. Furthermore, the effect of either injury or sacrifice of the chorda tympani in the CI population is not well characterized. The purpose of this study was to calculate the prevalence of xerostomia among a population of adult CI recipients.
Weinreich HM, Ostrander B, Pross SE, Dasgupta R, Francis HW. Prevalence of Xerostomia Among Cochlear Implant Recipients. JAMA Otolaryngol Head Neck Surg. Published online October 15, 2020. doi:10.1001/jamaoto.2020.3409
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