New image analysis of large food particles can discriminate experimentally suppressed mastication

Summary  Objective parameters that could provide a basis for food texture selection for elderly or dysphagic patients have not been established. We, therefore, aimed to develop a precise method of measuring large particles (>2 mm in diameter) in a bolus and an analytical method to provide a scien...

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Bibliographic Details
Published in:Journal of oral rehabilitation 2012-06, Vol.39 (6), p.405-410
Main Authors: SUGIMOTO, K., IEGAMI, C. M., IIDA, S., NAITO, M., TAMAKI, R., MINAGI, S.
Format: Article
Language:English
Subjects:
Adult
Animals
Arachis
Cattle
Daucus carota
Dentistry
Electromyography
Female
Food
Food selection
geriatric
Humans
Image processing
Image Processing, Computer-Assisted
Masseter muscle
Masseter Muscle - physiology
Mastication
Mastication - physiology
Meat
Particle Size
prosthodontic
Sensitivity and Specificity
Young Adult
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Summary:Summary  Objective parameters that could provide a basis for food texture selection for elderly or dysphagic patients have not been established. We, therefore, aimed to develop a precise method of measuring large particles (>2 mm in diameter) in a bolus and an analytical method to provide a scientific rationale for food selection under masticatory dysfunction conditions. We developed a new illumination system to evaluate the ability of twenty female participants (mean age, 23·4 ± 4·3 years) to masticate carrots, peanuts and beef with full, half and one quarter of the number of masticatory strokes. We also evaluated mastication under suppressed force, regulated by 20% electromyographic of the masseter muscle. The intercept and inclination of the regression line for the distribution of large particles were adopted as coefficients for the discrimination of masticatory efficiency. Single set of coefficient thresholds of 0·10 for the intercept and 1·62 for the inclination showed excellent discrimination of masticatory conditions for all three test foods with high specificity and sensitivity. These results suggested that our method of analysing the distribution of particles >2 mm in diameter might provide the basis for the appropriate selection of food texture for masticatory dysfunction patients from the standpoint of comminution.
ISSN:0305-182X
1365-2842
DOI:10.1111/j.1365-2842.2012.02288.x