Newly developed hardness testing system, "Cariotester": Measurement principles and development of a program for measuring Knoop hardness of carious dentin
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概要
- 論文の詳細を見る
We previously discovered that when a cone-shaped indenter coated with paint was pressed into an object, the paint disappeared in accordance with the depth of the indentation. Based on this fact, we developed the Cariotester, a portable system for measuring the Knoop hardness (KHN) of carious dentin. The Cariotester is composed of a handpiece with an indenter, a microscope, and a computer. In this system, the painted indenter is forced into the material with a 150-gf load, and the indentation depth (CT depth) is obtained from the paint disappearance. The CT depth by the Cariotester and the KHN by a microhardness tester were determined at 14 dentin regions. From the data, a program was created to convert the CT depth of the carious dentin into the KHN. As a result, if the CT depth is measured with this system, the KHN of carious dentin can be displayed in real time.
著者
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Yamamoto Takatsugu
Department Of Internal Medicine School Of Medicine Teikyo University
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Shimizu Akihiko
Department Of Cardiovascular Medicine Yamaguchi University Graduate School Of Medicine
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Nikaido Toru
Cariology And Operative Denatistry Department Of Restorative Sciences Graduate School Of Medical And
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Momoi Yasuko
Department Of Operative Dentistry School Of Dental Medicine Tsurumi University
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Nakashima Syozi
Cariology And Operative Dentistry Department Of Restorative Sciences Graduate School Of Medical And Dental Sciences Tokyo Medical And Dental University
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SUGAWARA Toyotaro
Department of Operative Dentistry, Tsurumi University School of Dental Medicine
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Shimizu Akihiko
Department of Applied Chemistry, Faculty of Engineering, Osaka City University
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