1988 Fiscal Year Final Research Report Summary

A study of a new method for evaluating masticatory ability by means of "energy".

Research Project

Project/Area Number	62570917
Research Category	Grant-in-Aid for General Scientific Research (C)
Allocation Type	Single-year Grants
Research Field	小児・社会系歯学
Research Institution	Kyushu University
Principal Investigator	AKIHIKO Nakasima Lecture of Attached Hospital to Kyushu Univ. Faculty ot Dentistry, 歯学部附属学院, 講師 (00037524)
Co-Investigator(Kenkyū-buntansha)	MOTOSHI Ichinose Instructor of Kyushu Univ. Faculty of Dentistry, 歯学部, 助手 (30150460)
Project Period (FY)	1987 – 1988
Keywords	Masticatory function / Masticatory ability / Masticatory energy / 咀嚼検定錠
Research Abstract	Summary A new method has been devised to measure masticatory ability. Pigment-coated granules were prepared, and 730mg (730-740 granules) were sealed in a rubber capsule. This capsule was used as a test material and was chewed by the subject under standardized conditions. The masticatory ability defined as the joules of work performed. was calculated based on the concentration of pigment leaked from the crushed granules during the process of mastication. The procedure is rapid, simple and reliable, and can be used for a large number of clinical samples and studies. The measurement error, defined as the coefficient of variation, was 2.1%. the intra-individual variation of measurements of twenty volunteers ranged from 3.6 to 16.9%. A series of tests in each subject was necessary to obtain a reliable value of masticatory ability.

(2 results)