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Under Pressure: Generic and Individual Intra-oral Pressure Profiles in Liquid Swallows

By Michael Guy Farl and Bvsc Bds


Aim: To determine if a universal pressure profile exists between healthy volunteers swallowing liquids of varying viscosity, and to investigate the effects of increased viscosity on these pressure patterns within and between individuals. Methods: A custom made appliance with 7 miniature pressure transducers located along the mid-line and lateral palate was used to measure absolute pressures during 10ml water and honey-thick liquid swallows. Data were obtained from 10 healthy volunteers (5 males, 5 females; 22-42 years) with full permanent dentition. Following accommodation, subjects performed liquid swallows on command. Each subject performed swallows on 2 subsequent days yielding data from 12 swallows per individual for each liquid. Using the Scope ® and Zoom ® function of the LabChart ® 7.0.2 software by ADInstruments, each individual’s pressure profiles were aligned at the initial major pressure peak of the mid-palatal channel to create an average swallowing profile for each liquid type. The average swallowing profiles from each individual were similarly overlaid to create generic average pressure profiles for each liquid

Year: 2011
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