Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Effects of incorporation of hydroxyapatite and fluoroapatite nanobioceramics into conventional glass ionomer cements (GIC)
AU - Moshaverinia, A.
AU - Ansari, S.
AU - Moshaverinia, M.
AU - Roohpour, N.
AU - Darr, J.A.
AU - Rehman, I.
PY - 2008
Y1 - 2008
N2 - Hydroxyapatite (HA) has excellent biological behavior, and its composition and crystal structure are similar to the apatite in the human dental structure and skeletal system; a number of researchers have attempted to evaluate the effect of the addition of HA powders to restorative dental materials. In this study, nanohydroxy and fluoroapatite were synthesized using an ethanol based sol-gel technique. The synthesized nanoceramic particles were incorporated into commercial glass ionomer powder (Fuji II GC) and were characterized using Fourier transform infrared and Raman spectroscopy, X-ray diffraction and scanning electron microscopy. Compressive, diametral tensile and biaxial flexural strengths of the modified glass ionomer cements were evaluated. The effect of nanohydroxyapatite and fluoroapatite on the bond strength of glass ionomer cement to dentin was also investigated. Results showed that after 1 and 7 days of setting, the nanohydroxyapatite/fluoroapatite added cements exhibited higher compressive strength (177-179 MPa), higher diametral tensile strength (19-20 MPa) and higher biaxial flexural strength (26-28 MPa) as compared with the control group (160 MPa in CS, 14 MPa in DTS and 18 MPa in biaxial flexural strength). The experimental cements also exhibited higher bond strength to dentin after 7 and 30 days of storage in distilled water. It was concluded that glass ionomer cements containing nanobioceramics are promising restorative dental materials with both improved mechanical properties and improved bond strength to dentin. © 2007 Acta Materialia Inc.
AB - Hydroxyapatite (HA) has excellent biological behavior, and its composition and crystal structure are similar to the apatite in the human dental structure and skeletal system; a number of researchers have attempted to evaluate the effect of the addition of HA powders to restorative dental materials. In this study, nanohydroxy and fluoroapatite were synthesized using an ethanol based sol-gel technique. The synthesized nanoceramic particles were incorporated into commercial glass ionomer powder (Fuji II GC) and were characterized using Fourier transform infrared and Raman spectroscopy, X-ray diffraction and scanning electron microscopy. Compressive, diametral tensile and biaxial flexural strengths of the modified glass ionomer cements were evaluated. The effect of nanohydroxyapatite and fluoroapatite on the bond strength of glass ionomer cement to dentin was also investigated. Results showed that after 1 and 7 days of setting, the nanohydroxyapatite/fluoroapatite added cements exhibited higher compressive strength (177-179 MPa), higher diametral tensile strength (19-20 MPa) and higher biaxial flexural strength (26-28 MPa) as compared with the control group (160 MPa in CS, 14 MPa in DTS and 18 MPa in biaxial flexural strength). The experimental cements also exhibited higher bond strength to dentin after 7 and 30 days of storage in distilled water. It was concluded that glass ionomer cements containing nanobioceramics are promising restorative dental materials with both improved mechanical properties and improved bond strength to dentin. © 2007 Acta Materialia Inc.
KW - Glass ionomer cement
KW - Mechanical properties
KW - Nanofluoroapatite
KW - Nanohydroxyapatie
KW - Sol-gel synthesis
KW - alcohol
KW - apatite
KW - fluorapatite
KW - glass ionomer
KW - hydroxyapatite
KW - water
KW - article
KW - ceramics
KW - chemical composition
KW - compressive strength
KW - controlled study
KW - crystal structure
KW - dentin
KW - infrared spectroscopy
KW - powder
KW - priority journal
KW - Raman spectrometry
KW - scanning electron microscopy
KW - skeleton
KW - synthesis
KW - tensile strength
KW - tooth
KW - X ray diffraction
KW - Apatites
KW - Biomechanics
KW - Durapatite
KW - Glass Ionomer Cements
KW - Materials Testing
KW - Microscopy, Electron, Scanning
KW - Nanostructures
KW - Nanotechnology
KW - Spectroscopy, Fourier Transform Infrared
KW - Surface Properties
KW - X-Ray Diffraction
U2 - 10.1016/j.actbio.2007.07.011
DO - 10.1016/j.actbio.2007.07.011
M3 - Journal article
VL - 4
SP - 432
EP - 440
JO - Acta Biomaterialia
JF - Acta Biomaterialia
SN - 1742-7061
IS - 2
ER -