An FTIR study of the effects of artificial saliva on the physical characteristics of the glass ionomer cements used for art

H. K. Yip; W. M. To

doi:10.1016/j.dental.2004.09.009

An FTIR study of the effects of artificial saliva on the physical characteristics of the glass ionomer cements used for art

H. K. Yip, W. M. To

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

18 Citations (Scopus)

Abstract

To investigate the physical and chemical changes of five esthetic restorative materials in an artificial saliva using Fourier transform infrared spectroscopy (FTIR). The materials included two glass polyalkenoate (ionomer) cements, one polyacid-modified resin composite, and two resin composites. Five fresh and 20 aged specimens for each material were immersed in 2 ml of artificial saliva at 37 ^oC for 1 week, 2 weeks, 1 month, and 2 months. They were examined by laser surface profilometer and FTIR. Surface roughness average (R_a) value showed significant differences among the physical properties of glass ionomers, polyacid-modified resin composite, and resin composites. FTIR spectra showed that a major chemical changes in Fuji IX GP Fast glass ionomer cement in P-NH₂ group bonding (900-1000 cm ^-1) that may explain the previously reported increase in microhardness after immersion. There was no direct correlation between surface roughness and spectral changes of the materials tested.

Original language	English
Pages (from-to)	695-703
Number of pages	9
Journal	Dental Materials
Volume	21
Issue number	8
DOIs	https://doi.org/10.1016/j.dental.2004.09.009
Publication status	Published - Aug 2005
Externally published	Yes

Keywords

Artificial saliva
FTIR
GIC

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10.1016/j.dental.2004.09.009

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title = "An FTIR study of the effects of artificial saliva on the physical characteristics of the glass ionomer cements used for art",

abstract = "To investigate the physical and chemical changes of five esthetic restorative materials in an artificial saliva using Fourier transform infrared spectroscopy (FTIR). The materials included two glass polyalkenoate (ionomer) cements, one polyacid-modified resin composite, and two resin composites. Five fresh and 20 aged specimens for each material were immersed in 2 ml of artificial saliva at 37 oC for 1 week, 2 weeks, 1 month, and 2 months. They were examined by laser surface profilometer and FTIR. Surface roughness average (Ra) value showed significant differences among the physical properties of glass ionomers, polyacid-modified resin composite, and resin composites. FTIR spectra showed that a major chemical changes in Fuji IX GP Fast glass ionomer cement in P-NH2 group bonding (900-1000 cm -1) that may explain the previously reported increase in microhardness after immersion. There was no direct correlation between surface roughness and spectral changes of the materials tested.",

keywords = "Artificial saliva, FTIR, GIC",

author = "Yip, {H. K.} and To, {W. M.}",

note = "Funding Information: The financial assistance of a grant from the Research Grants Council of Hong Kong (HKU 234/95M) is gratefully acknowledged. The principal author would like to express his gratitude to Dr David Lam, Associate Professor, Department of Mechanical Engineering, the Hong Kong University of Science and Technology, for support and advice. Technical assistance from Mr Ngai Chi Hang in the preparation of specimens is gratefully acknowledged. The mentorship of Professor Roger J. Smales to the principal author on this and related research projects in the University of Hong Kong is most gratefully acknowledged.",

year = "2005",

month = aug,

doi = "10.1016/j.dental.2004.09.009",

language = "English",

volume = "21",

pages = "695--703",

journal = "Dental Materials",

issn = "0109-5641",

publisher = "Elsevier Science",

number = "8",

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T1 - An FTIR study of the effects of artificial saliva on the physical characteristics of the glass ionomer cements used for art

AU - Yip, H. K.

AU - To, W. M.

N1 - Funding Information: The financial assistance of a grant from the Research Grants Council of Hong Kong (HKU 234/95M) is gratefully acknowledged. The principal author would like to express his gratitude to Dr David Lam, Associate Professor, Department of Mechanical Engineering, the Hong Kong University of Science and Technology, for support and advice. Technical assistance from Mr Ngai Chi Hang in the preparation of specimens is gratefully acknowledged. The mentorship of Professor Roger J. Smales to the principal author on this and related research projects in the University of Hong Kong is most gratefully acknowledged.

PY - 2005/8

Y1 - 2005/8

N2 - To investigate the physical and chemical changes of five esthetic restorative materials in an artificial saliva using Fourier transform infrared spectroscopy (FTIR). The materials included two glass polyalkenoate (ionomer) cements, one polyacid-modified resin composite, and two resin composites. Five fresh and 20 aged specimens for each material were immersed in 2 ml of artificial saliva at 37 oC for 1 week, 2 weeks, 1 month, and 2 months. They were examined by laser surface profilometer and FTIR. Surface roughness average (Ra) value showed significant differences among the physical properties of glass ionomers, polyacid-modified resin composite, and resin composites. FTIR spectra showed that a major chemical changes in Fuji IX GP Fast glass ionomer cement in P-NH2 group bonding (900-1000 cm -1) that may explain the previously reported increase in microhardness after immersion. There was no direct correlation between surface roughness and spectral changes of the materials tested.

AB - To investigate the physical and chemical changes of five esthetic restorative materials in an artificial saliva using Fourier transform infrared spectroscopy (FTIR). The materials included two glass polyalkenoate (ionomer) cements, one polyacid-modified resin composite, and two resin composites. Five fresh and 20 aged specimens for each material were immersed in 2 ml of artificial saliva at 37 oC for 1 week, 2 weeks, 1 month, and 2 months. They were examined by laser surface profilometer and FTIR. Surface roughness average (Ra) value showed significant differences among the physical properties of glass ionomers, polyacid-modified resin composite, and resin composites. FTIR spectra showed that a major chemical changes in Fuji IX GP Fast glass ionomer cement in P-NH2 group bonding (900-1000 cm -1) that may explain the previously reported increase in microhardness after immersion. There was no direct correlation between surface roughness and spectral changes of the materials tested.

KW - Artificial saliva

KW - FTIR

KW - GIC

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DO - 10.1016/j.dental.2004.09.009

M3 - Article

C2 - 16026664

AN - SCOPUS:22344433418

SN - 0109-5641

VL - 21

SP - 695

EP - 703

JO - Dental Materials

JF - Dental Materials

IS - 8

ER -

An FTIR study of the effects of artificial saliva on the physical characteristics of the glass ionomer cements used for art

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