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lower, and film thicknesses between food and oral surfaces higher, than those occurring during direct interaction between oral surfaces. ## Key Applications Oral Health Saliva maintains oral health. Lubrication in the oral cavity is provided by formation of an acquired pellicle and from the presence of a mobile thin film coating. The importance of this function is exemplified by the medical condition of dry mouth, referred to as xerostomia, which is common to hyposalivators. Hyposalivation (<0.1 mL/min WMS flow rate) is a common side effect of many therapeutic drugs, radiation treatment for head and neck cancer, and Sjorgren syndrome. A low flow rate of saliva leads to a localized decrease in salivary film thickness (e.g., from 100 to 10 mm on the hard palate), which is considered to impair oral lubrication (Dawes 2008). Xerostomia leads to difficulties in swallowing, speech, and mastication, as well as altered taste sensations and a general deterioration in oral health including increased abrasion and dental caries at teeth surfaces. This can also have a serious and detrimental effect on well being and cause considerable anxiety and stress on patients. Understanding the lubricatio
- Author
- DuWayne Paul
- Published
- 2013
- Language
- EN
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