Microstructural evolution of dental glass-ionomer cements during setting reaction followed using SANS and USANS

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dc.contributor.authorLoy, CWen_AU
dc.contributor.authorMatori, KAen_AU
dc.contributor.authorZainuddin, Nen_AU
dc.contributor.authorWhitten, AEen_AU
dc.contributor.authorRehm, Cen_AU
dc.contributor.authorde Campo, Len_AU
dc.contributor.authorSchmid, Sen_AU
dc.date.accessioned2021-08-24T21:12:04Zen_AU
dc.date.available2021-08-24T21:12:04Zen_AU
dc.date.issued2017-07-12en_AU
dc.date.statistics2021-08-16en_AU
dc.description.abstractGlass-ionomer cement (GIC) is a biocompatible material which is clinically used for dental filling. The main challenges for further developing GIC in dental applications are improving the mechanical strength and controlling the setting reaction. During the setting reaction, poly (acrylic acid) attacks the fluoroaluminosilicate glass particles to form a siliceous hydrogel layer, glass core and polyalkenoate matrix in paste form. The siliceous hydrogel layer undergoes dehydration to yield a strong cross-linkage to bind both polymer and glass particles into a cement structure. This study presents the application of small angle neutron scattering (SANS) and ultra small angle neutron scattering (USANS) with contrast variation techniques to study the microstructure evolution of a complex GIC paste during 48 hours of the setting reaction. A few GIC pastes are prepared from medical grade poly (acrylic acid), SiO2–Al2O3–P2O5–Na2O–CaO–CaF2-based fluoroaluminosilicate glasses and a mixture of H2O:D2O solvent following the ISO9917-1:2007 cement preparation method. The combination of SANS (Bilby@ACNS) and USANS (Kookaburra@ACNS) provides microstructure information of GIC paste over the length scale of 1 nm to 10 µm. The microstructure change of each phase in GIC pastes is investigated at different contrast conditions by varying the H2O:D2O ratio for both neutron scattering experiments. The macro- and nano-scale features of the polymer-glass-hydrogel phases in GIC paste during the setting reaction as well as their impact on mechanical strengths are presented in this study.en_AU
dc.identifier.citationLoy, C. W., Matori, K. A., Zainuddin, N., Whitten, A. E., Rehm, C., de Campo, L., & Schmid, S. (2017). Microstructural evolution of dental glass-ionomer cements during setting reaction followed using SANS and USANS. Paper presented at ICNS 2017 (International Conference on Neutron Scattering), Daejeon, South Korea, 9 to 13 July 2017. Retrieved from: http://www.icns2017.org/program.phpen_AU
dc.identifier.conferenceenddate13 July 2017en_AU
dc.identifier.conferencenameICNS 2017 (International Conference on Neutron Scattering)en_AU
dc.identifier.conferenceplaceDaejeon, South Koreaen_AU
dc.identifier.conferencestartdate9 July 2017en_AU
dc.identifier.urihttp://www.icns2017.org/program.phpen_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/11458en_AU
dc.language.isoenen_AU
dc.publisherInternational Conference on Neutron Scatteringen_AU
dc.subjectHydrogelsen_AU
dc.subjectGlassen_AU
dc.subjectPolymersen_AU
dc.subjectSmall angle scatteringen_AU
dc.subjectNeutron diffractionen_AU
dc.subjectMicrostructureen_AU
dc.titleMicrostructural evolution of dental glass-ionomer cements during setting reaction followed using SANS and USANSen_AU
dc.typeConference Abstracten_AU
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