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Modification of conventional glass-ionomer cements with N-vinylpyrrolidone containing polyacids, nano-hydroxy and fluoroapatite to improve mechanical properties

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Modification of conventional glass-ionomer cements with N-vinylpyrrolidone containing polyacids, nano-hydroxy and fluoroapatite to improve mechanical properties. / Moshaverinia, A.; Ansari, S.; Movasaghi, Z.; Billington, R.W.; Darr, J.A.; Rehman, I.U.

In: Dental Materials, Vol. 24, No. 10, 2008, p. 1381-1390.

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Moshaverinia, A. ; Ansari, S. ; Movasaghi, Z. ; Billington, R.W. ; Darr, J.A. ; Rehman, I.U. / Modification of conventional glass-ionomer cements with N-vinylpyrrolidone containing polyacids, nano-hydroxy and fluoroapatite to improve mechanical properties. In: Dental Materials. 2008 ; Vol. 24, No. 10. pp. 1381-1390.

Bibtex

@article{f70b30be08ba4904bc89957e514b0cdc,
title = "Modification of conventional glass-ionomer cements with N-vinylpyrrolidone containing polyacids, nano-hydroxy and fluoroapatite to improve mechanical properties",
abstract = "Objective: The objective of this study was to enhance the mechanical strength of glass-ionomer cements, while preserving their unique clinical properties. Methods: Copolymers incorporating several different segments including N-vinylpyrrolidone (NVP) in different molar ratios were synthesized. The synthesized polymers were copolymers of acrylic acid and NVP with side chains containing itaconic acid. In addition, nano-hydroxyapatite and fluoroapatite were synthesized using an ethanol-based sol-gel technique. The synthesized polymers were used in glass-ionomer cement formulations (Fuji II commercial GIC) and the synthesized nanoceramic particles (nano-hydroxy or fluoroapatite) were also incorporated into commercial glass-ionomer powder, respectively. The synthesized materials were characterized using FTIR and Raman spectroscopy and scanning electron microscopy. Compressive, diametral tensile and biaxial flexural strengths of the modified glass-ionomer cements were evaluated. Results: After 24 h setting, the NVP modified glass-ionomer cements exhibited higher compressive strength (163-167 MPa), higher diametral tensile strength (DTS) (13-17 MPa) and much higher biaxial flexural strength (23-26 MPa) in comparison to Fuji II GIC (160 MPa in CS, 12 MPa in DTS and 15 MPa in biaxial flexural strength). The nano-hydroxyapatite/fluoroapatite added cements also exhibited higher CS (177-179 MPa), higher DTS (19-20 MPa) and much higher biaxial flexural strength (28-30 MPa) as compared to the control group. The highest values for CS, DTS and BFS were found for NVP-nanoceramic powder modified cements (184 MPa for CS, 22 MPa for DTS and 33 MPa for BFS) which were statistically higher than control group. Conclusion: It was concluded that, both NVP modified and nano-HA/FA added glass-ionomer cements are promising restorative dental materials with improved mechanical properties. {\textcopyright} 2008 Academy of Dental Materials.",
keywords = "Free radical polymerization, Glass-ionomer cements, Mechanical properties, N-Vinylpyrrolidone, Nano-hydroxyapatite, Nanofluoroapatite, Reinforcement, Sol-gel technique, Synthesis, Architectural acoustics, Bending strength, Blood vessel prostheses, Bone cement, Canning, Carboxylic acids, Cement manufacture, Cements, Colloids, Compressive strength, Copolymerization, Copolymers, Dental materials, Dental prostheses, Electric frequency control, Electronic medical equipment, Ethanol, Fourier transform infrared spectroscopy, Gelation, Glass, Health, Hydroxyapatite, Ice, Imaging techniques, Intercalation, Materials properties, Organic acids, Plastic products, Polymers, Powders, Strength of materials, Acrylic acid (PS-PAA), Bi axial flexural strength, Commercial glasses, Control Group (CON), Diametral tensile strength (DTS), Fluoroapatite (FA), Glass ionomer cement (GIC), Ionomer, Itaconic acid (PIA), Mechanical strengths, Molar ratios, N vinyl pyrrolidone (NPV), Nano ceramics, Nano-hydroxyapatite (n-HA), Nanoceramic powder, Polyacids, Side chains, Sol-gel techniques, Strength (IGC: D5/D6), Synthesized materials, Synthesized polymers, Dental cement, 1 vinyl 2 pyrrolidinone, 2 pyrrolidone derivative, acrylic acid resin, alcohol, apatite, biomaterial, carbopol 940, fluorapatite, Fuji glass ionomer lining cement, Fuji glass-ionomer lining cement, glass ionomer, hydroxyapatite, itaconic acid, itaconic acrylic acid copolymer, itaconic-acrylic acid copolymer, N-vinyl-2-pyrrolidinone, nanoparticle, polymer, solvent, succinic acid derivative, unclassified drug, article, chemistry, comparative study, compressive strength, human, infrared spectroscopy, materials testing, mechanical stress, phase transition, pliability, Raman spectrometry, scanning electron microscopy, tensile strength, time, Acrylic Resins, Apatites, Biocompatible Materials, Compressive Strength, Durapatite, Glass Ionomer Cements, Humans, Materials Testing, Microscopy, Electron, Scanning, Nanoparticles, Phase Transition, Pliability, Pyrrolidinones, Solvents, Spectroscopy, Fourier Transform Infrared, Spectrum Analysis, Raman, Stress, Mechanical, Succinates, Tensile Strength, Time Factors",
author = "A. Moshaverinia and S. Ansari and Z. Movasaghi and R.W. Billington and J.A. Darr and I.U. Rehman",
year = "2008",
doi = "10.1016/j.dental.2008.03.008",
language = "English",
volume = "24",
pages = "1381--1390",
journal = "Dental Materials",
issn = "0109-5641",
publisher = "Elsevier Inc.",
number = "10",

}

RIS

TY - JOUR

T1 - Modification of conventional glass-ionomer cements with N-vinylpyrrolidone containing polyacids, nano-hydroxy and fluoroapatite to improve mechanical properties

AU - Moshaverinia, A.

AU - Ansari, S.

AU - Movasaghi, Z.

AU - Billington, R.W.

AU - Darr, J.A.

AU - Rehman, I.U.

PY - 2008

Y1 - 2008

N2 - Objective: The objective of this study was to enhance the mechanical strength of glass-ionomer cements, while preserving their unique clinical properties. Methods: Copolymers incorporating several different segments including N-vinylpyrrolidone (NVP) in different molar ratios were synthesized. The synthesized polymers were copolymers of acrylic acid and NVP with side chains containing itaconic acid. In addition, nano-hydroxyapatite and fluoroapatite were synthesized using an ethanol-based sol-gel technique. The synthesized polymers were used in glass-ionomer cement formulations (Fuji II commercial GIC) and the synthesized nanoceramic particles (nano-hydroxy or fluoroapatite) were also incorporated into commercial glass-ionomer powder, respectively. The synthesized materials were characterized using FTIR and Raman spectroscopy and scanning electron microscopy. Compressive, diametral tensile and biaxial flexural strengths of the modified glass-ionomer cements were evaluated. Results: After 24 h setting, the NVP modified glass-ionomer cements exhibited higher compressive strength (163-167 MPa), higher diametral tensile strength (DTS) (13-17 MPa) and much higher biaxial flexural strength (23-26 MPa) in comparison to Fuji II GIC (160 MPa in CS, 12 MPa in DTS and 15 MPa in biaxial flexural strength). The nano-hydroxyapatite/fluoroapatite added cements also exhibited higher CS (177-179 MPa), higher DTS (19-20 MPa) and much higher biaxial flexural strength (28-30 MPa) as compared to the control group. The highest values for CS, DTS and BFS were found for NVP-nanoceramic powder modified cements (184 MPa for CS, 22 MPa for DTS and 33 MPa for BFS) which were statistically higher than control group. Conclusion: It was concluded that, both NVP modified and nano-HA/FA added glass-ionomer cements are promising restorative dental materials with improved mechanical properties. © 2008 Academy of Dental Materials.

AB - Objective: The objective of this study was to enhance the mechanical strength of glass-ionomer cements, while preserving their unique clinical properties. Methods: Copolymers incorporating several different segments including N-vinylpyrrolidone (NVP) in different molar ratios were synthesized. The synthesized polymers were copolymers of acrylic acid and NVP with side chains containing itaconic acid. In addition, nano-hydroxyapatite and fluoroapatite were synthesized using an ethanol-based sol-gel technique. The synthesized polymers were used in glass-ionomer cement formulations (Fuji II commercial GIC) and the synthesized nanoceramic particles (nano-hydroxy or fluoroapatite) were also incorporated into commercial glass-ionomer powder, respectively. The synthesized materials were characterized using FTIR and Raman spectroscopy and scanning electron microscopy. Compressive, diametral tensile and biaxial flexural strengths of the modified glass-ionomer cements were evaluated. Results: After 24 h setting, the NVP modified glass-ionomer cements exhibited higher compressive strength (163-167 MPa), higher diametral tensile strength (DTS) (13-17 MPa) and much higher biaxial flexural strength (23-26 MPa) in comparison to Fuji II GIC (160 MPa in CS, 12 MPa in DTS and 15 MPa in biaxial flexural strength). The nano-hydroxyapatite/fluoroapatite added cements also exhibited higher CS (177-179 MPa), higher DTS (19-20 MPa) and much higher biaxial flexural strength (28-30 MPa) as compared to the control group. The highest values for CS, DTS and BFS were found for NVP-nanoceramic powder modified cements (184 MPa for CS, 22 MPa for DTS and 33 MPa for BFS) which were statistically higher than control group. Conclusion: It was concluded that, both NVP modified and nano-HA/FA added glass-ionomer cements are promising restorative dental materials with improved mechanical properties. © 2008 Academy of Dental Materials.

KW - Free radical polymerization

KW - Glass-ionomer cements

KW - Mechanical properties

KW - N-Vinylpyrrolidone

KW - Nano-hydroxyapatite

KW - Nanofluoroapatite

KW - Reinforcement

KW - Sol-gel technique

KW - Synthesis

KW - Architectural acoustics

KW - Bending strength

KW - Blood vessel prostheses

KW - Bone cement

KW - Canning

KW - Carboxylic acids

KW - Cement manufacture

KW - Cements

KW - Colloids

KW - Compressive strength

KW - Copolymerization

KW - Copolymers

KW - Dental materials

KW - Dental prostheses

KW - Electric frequency control

KW - Electronic medical equipment

KW - Ethanol

KW - Fourier transform infrared spectroscopy

KW - Gelation

KW - Glass

KW - Health

KW - Hydroxyapatite

KW - Ice

KW - Imaging techniques

KW - Intercalation

KW - Materials properties

KW - Organic acids

KW - Plastic products

KW - Polymers

KW - Powders

KW - Strength of materials

KW - Acrylic acid (PS-PAA)

KW - Bi axial flexural strength

KW - Commercial glasses

KW - Control Group (CON)

KW - Diametral tensile strength (DTS)

KW - Fluoroapatite (FA)

KW - Glass ionomer cement (GIC)

KW - Ionomer

KW - Itaconic acid (PIA)

KW - Mechanical strengths

KW - Molar ratios

KW - N vinyl pyrrolidone (NPV)

KW - Nano ceramics

KW - Nano-hydroxyapatite (n-HA)

KW - Nanoceramic powder

KW - Polyacids

KW - Side chains

KW - Sol-gel techniques

KW - Strength (IGC: D5/D6)

KW - Synthesized materials

KW - Synthesized polymers

KW - Dental cement

KW - 1 vinyl 2 pyrrolidinone

KW - 2 pyrrolidone derivative

KW - acrylic acid resin

KW - alcohol

KW - apatite

KW - biomaterial

KW - carbopol 940

KW - fluorapatite

KW - Fuji glass ionomer lining cement

KW - Fuji glass-ionomer lining cement

KW - glass ionomer

KW - hydroxyapatite

KW - itaconic acid

KW - itaconic acrylic acid copolymer

KW - itaconic-acrylic acid copolymer

KW - N-vinyl-2-pyrrolidinone

KW - nanoparticle

KW - polymer

KW - solvent

KW - succinic acid derivative

KW - unclassified drug

KW - article

KW - chemistry

KW - comparative study

KW - compressive strength

KW - human

KW - infrared spectroscopy

KW - materials testing

KW - mechanical stress

KW - phase transition

KW - pliability

KW - Raman spectrometry

KW - scanning electron microscopy

KW - tensile strength

KW - time

KW - Acrylic Resins

KW - Apatites

KW - Biocompatible Materials

KW - Compressive Strength

KW - Durapatite

KW - Glass Ionomer Cements

KW - Humans

KW - Materials Testing

KW - Microscopy, Electron, Scanning

KW - Nanoparticles

KW - Phase Transition

KW - Pliability

KW - Pyrrolidinones

KW - Solvents

KW - Spectroscopy, Fourier Transform Infrared

KW - Spectrum Analysis, Raman

KW - Stress, Mechanical

KW - Succinates

KW - Tensile Strength

KW - Time Factors

U2 - 10.1016/j.dental.2008.03.008

DO - 10.1016/j.dental.2008.03.008

M3 - Journal article

VL - 24

SP - 1381

EP - 1390

JO - Dental Materials

JF - Dental Materials

SN - 0109-5641

IS - 10

ER -