Influence of alkali metal ions on the fracture properties of glass polyalkenoate (ionomer) cements

E. De Barra; R. G. Hill

doi:10.1016/S0142-9612(97)00129-4

Influence of alkali metal ions on the fracture properties of glass polyalkenoate (ionomer) cements

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

Abstract

The influence of substituting sodium for calcium on the properties of glass polyalkenoate cements was investigated. Two series of glass compositions based on PSiO₂·QAl₂O₃·0.75P₂O₅·(1 - Z)CaO·XCaF₂ZNa₂O were studied. The fluorine content was fixed at X = 0.50 and 0.75 and the sodium content varied by altering Z. The glass polyalkenoate cements formed from these glasses were characterized using a linear elastic fracture mechanics (LEFM) approach. In addition, compressive strengths of the cements were determined. The properties of the cements based on the high fluorine content glasses (X = 0.75) were relatively insensitive to sodium content. The Young's modulus, un-notched fracture strength and fracture toughness of the cements produced with the lower fluorine content glasses (X = 0.5) reduced with sodium content, which was consistent with sodium acting to disrupt ionic cross-linking in the polyacrylate matrix. The compressive strength was not as dependent on sodium content as the LEFM parameters.

Original language	English
Pages (from-to)	495-502
Number of pages	8
Journal	Biomaterials
Volume	19
Issue number	6
DOIs	https://doi.org/10.1016/S0142-9612(97)00129-4
Publication status	Published - Apr 1998
Externally published	Yes

Keywords

Dental cements
Fracture toughness
Glass ionomer
Glass polyalkenoate

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10.1016/S0142-9612(97)00129-4

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title = "Influence of alkali metal ions on the fracture properties of glass polyalkenoate (ionomer) cements",

abstract = "The influence of substituting sodium for calcium on the properties of glass polyalkenoate cements was investigated. Two series of glass compositions based on PSiO2·QAl2O3·0.75P2O5·(1 - Z)CaO·XCaF2ZNa2O were studied. The fluorine content was fixed at X = 0.50 and 0.75 and the sodium content varied by altering Z. The glass polyalkenoate cements formed from these glasses were characterized using a linear elastic fracture mechanics (LEFM) approach. In addition, compressive strengths of the cements were determined. The properties of the cements based on the high fluorine content glasses (X = 0.75) were relatively insensitive to sodium content. The Young's modulus, un-notched fracture strength and fracture toughness of the cements produced with the lower fluorine content glasses (X = 0.5) reduced with sodium content, which was consistent with sodium acting to disrupt ionic cross-linking in the polyacrylate matrix. The compressive strength was not as dependent on sodium content as the LEFM parameters.",

keywords = "Dental cements, Fracture toughness, Glass ionomer, Glass polyalkenoate",

author = "{De Barra}, E. and Hill, {R. G.}",

year = "1998",

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doi = "10.1016/S0142-9612(97)00129-4",

language = "English",

volume = "19",

pages = "495--502",

journal = "Biomaterials",

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number = "6",

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T1 - Influence of alkali metal ions on the fracture properties of glass polyalkenoate (ionomer) cements

AU - De Barra, E.

AU - Hill, R. G.

PY - 1998/4

Y1 - 1998/4

N2 - The influence of substituting sodium for calcium on the properties of glass polyalkenoate cements was investigated. Two series of glass compositions based on PSiO2·QAl2O3·0.75P2O5·(1 - Z)CaO·XCaF2ZNa2O were studied. The fluorine content was fixed at X = 0.50 and 0.75 and the sodium content varied by altering Z. The glass polyalkenoate cements formed from these glasses were characterized using a linear elastic fracture mechanics (LEFM) approach. In addition, compressive strengths of the cements were determined. The properties of the cements based on the high fluorine content glasses (X = 0.75) were relatively insensitive to sodium content. The Young's modulus, un-notched fracture strength and fracture toughness of the cements produced with the lower fluorine content glasses (X = 0.5) reduced with sodium content, which was consistent with sodium acting to disrupt ionic cross-linking in the polyacrylate matrix. The compressive strength was not as dependent on sodium content as the LEFM parameters.

AB - The influence of substituting sodium for calcium on the properties of glass polyalkenoate cements was investigated. Two series of glass compositions based on PSiO2·QAl2O3·0.75P2O5·(1 - Z)CaO·XCaF2ZNa2O were studied. The fluorine content was fixed at X = 0.50 and 0.75 and the sodium content varied by altering Z. The glass polyalkenoate cements formed from these glasses were characterized using a linear elastic fracture mechanics (LEFM) approach. In addition, compressive strengths of the cements were determined. The properties of the cements based on the high fluorine content glasses (X = 0.75) were relatively insensitive to sodium content. The Young's modulus, un-notched fracture strength and fracture toughness of the cements produced with the lower fluorine content glasses (X = 0.5) reduced with sodium content, which was consistent with sodium acting to disrupt ionic cross-linking in the polyacrylate matrix. The compressive strength was not as dependent on sodium content as the LEFM parameters.

KW - Dental cements

KW - Fracture toughness

KW - Glass ionomer

KW - Glass polyalkenoate

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DO - 10.1016/S0142-9612(97)00129-4

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VL - 19

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JO - Biomaterials

JF - Biomaterials

IS - 6

ER -

Influence of alkali metal ions on the fracture properties of glass polyalkenoate (ionomer) cements

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Keywords

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