Load dependency and reliability of microhardness measurements on acid etched enamel surfaces.

Kristiaan Collys; Dick Slop; Roberto Cleymaet; Danny Coomans; Yvette Michotte

Load dependency and reliability of microhardness measurements on acid etched enamel surfaces.

Kristiaan Collys, Dick Slop, Roberto Cleymaet, Danny Coomans, Yvette Michotte

Research output: Contribution to journal › Article › peer-review

22 Citations (Scopus)

Abstract

The load dependency of hardness measurements was investigated on sound and demineralized enamel samples. For all samples investigated, the Knoop hardness number (KHN) varied as a function of the applied load. Higher loads enhanced indenter penetration into the test surface. The variation in KHN values observed in demineralized enamel, both surface-softened and surface-etched, was explained by a decrease in porosity as a function of depth. The reading error for indentations made on surface enamel etched with 37% phosphoric acid gel for 30 s was found to be slightly elevated compared to indentations made on a polished sound enamel surface. It was concluded that the surface microhardness technique can be used for the longitudinal investigation of etched surface enamel.

Original language	English
Pages (from-to)	332-335
Number of pages	4
Journal	Dent Mater
Volume	8
Issue number	September
Publication status	Published - 1992

Bibliographical note

Dental Materials, 332-335, Vol 8

Keywords

Acid Etching
Dental
Dental Enamel
Hardness Tests
Tooth Demineralization
Knoop hardness number
KHN values

Access to Document

http://www.ncbi.nlm.nih.gov/pubmed/1303377

Cite this

@article{4c288a4ff46a479cba553078fc2419bf,

title = "Load dependency and reliability of microhardness measurements on acid etched enamel surfaces.",

abstract = "The load dependency of hardness measurements was investigated on sound and demineralized enamel samples. For all samples investigated, the Knoop hardness number (KHN) varied as a function of the applied load. Higher loads enhanced indenter penetration into the test surface. The variation in KHN values observed in demineralized enamel, both surface-softened and surface-etched, was explained by a decrease in porosity as a function of depth. The reading error for indentations made on surface enamel etched with 37% phosphoric acid gel for 30 s was found to be slightly elevated compared to indentations made on a polished sound enamel surface. It was concluded that the surface microhardness technique can be used for the longitudinal investigation of etched surface enamel.",

keywords = "Acid Etching, Dental, Dental Enamel, Hardness Tests, Tooth Demineralization, Knoop hardness number, KHN values",

author = "Kristiaan Collys and Dick Slop and Roberto Cleymaet and Danny Coomans and Yvette Michotte",

note = "Dental Materials, 332-335, Vol 8",

year = "1992",

language = "English",

volume = "8",

pages = "332--335",

journal = "Dental Materials",

issn = "0109-5641",

publisher = "Elsevier Science",

number = "September",

}

TY - JOUR

T1 - Load dependency and reliability of microhardness measurements on acid etched enamel surfaces.

AU - Collys, Kristiaan

AU - Slop, Dick

AU - Cleymaet, Roberto

AU - Coomans, Danny

AU - Michotte, Yvette

N1 - Dental Materials, 332-335, Vol 8

PY - 1992

Y1 - 1992

N2 - The load dependency of hardness measurements was investigated on sound and demineralized enamel samples. For all samples investigated, the Knoop hardness number (KHN) varied as a function of the applied load. Higher loads enhanced indenter penetration into the test surface. The variation in KHN values observed in demineralized enamel, both surface-softened and surface-etched, was explained by a decrease in porosity as a function of depth. The reading error for indentations made on surface enamel etched with 37% phosphoric acid gel for 30 s was found to be slightly elevated compared to indentations made on a polished sound enamel surface. It was concluded that the surface microhardness technique can be used for the longitudinal investigation of etched surface enamel.

AB - The load dependency of hardness measurements was investigated on sound and demineralized enamel samples. For all samples investigated, the Knoop hardness number (KHN) varied as a function of the applied load. Higher loads enhanced indenter penetration into the test surface. The variation in KHN values observed in demineralized enamel, both surface-softened and surface-etched, was explained by a decrease in porosity as a function of depth. The reading error for indentations made on surface enamel etched with 37% phosphoric acid gel for 30 s was found to be slightly elevated compared to indentations made on a polished sound enamel surface. It was concluded that the surface microhardness technique can be used for the longitudinal investigation of etched surface enamel.

KW - Acid Etching

KW - Dental

KW - Dental Enamel

KW - Hardness Tests

KW - Tooth Demineralization

KW - Knoop hardness number

KW - KHN values

M3 - Article

VL - 8

SP - 332

EP - 335

JO - Dental Materials

JF - Dental Materials

SN - 0109-5641

IS - September

ER -

Load dependency and reliability of microhardness measurements on acid etched enamel surfaces.

Abstract

Bibliographical note

Keywords

Access to Document

Fingerprint

Cite this