Measurement of surface hardness of primary carious lesions in extracted human enamel —Measurement of Knoop hardness using Cariotester—
Source abstract
Abstract
The clinical feasibility of a novel device called a Cariotester was investigated by measuring the Knoop hardness (KHN) of white spot lesions diagnosed as ICDAS code 1, 2 or 3. To obtain an equation for converting the Cariotester indentation depth into the KHN, a regression analysis was performed between the depth and measured KHN for human enamel. The Cariotester was then used to measure the indentation depth for white spots (ICDAS code 1, 2 or 3) in extracted teeth, and the KHN values were determined using the above equation. The KHN was 219.9±19.7, 162.4±24.0 and 31.7±17.5 for code 1, 2 and 3 lesions, respectively, which was 30, 49 and 90% lower than that for healthy enamel. Using the formula reported in the literature, the mineral density was calculated to be 87.7 vol.% for healthy enamel, and 75.1, 66.1 and 35.5 vol.% for code 1, 2 and 3 lesions, respectively.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Dental Health and Care Utilization · Dental materials and restorations · Oral microbiology and periodontitis research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Dentistry and Oral Surgery, Hyogo College of Medicine
Department of Operative Dentistry, Tsurumi University School of Dental Medicine
Cariology and Operative Dentistry, Department of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
References (11)
Show source-provided references
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