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Conference Paper: Characterization of nano-silica coating of zirconia for resin-zirconia bonding

TitleCharacterization of nano-silica coating of zirconia for resin-zirconia bonding
Authors
KeywordsCeramics
Dental materials
Methodology
Surfaces and Technology
Issue Date2014
PublisherSage Publications, Inc.. The Journal's web site is located at http://www.sagepub.com/journalsProdDesc.nav?prodId=Journal201925
Citation
The 92nd General Session & Exhibition of the International Association for Dental Research (IADR), Cape Town, South Africa, 25-28 June 2014. In Journal of Dental Research, 2014, v. 93 n. Special issue B: abstract no. 204 How to Cite?
AbstractObjective: To characterize silica-coated zirconia surfaces by silicon nitride (Si3N4) hydrolysis under alkaline condition + a thermal treatment, scanning electron microscopy(SEM), energy-dispersive X-ray spectroscopy(EDX) and atomic force spectroscopy(AFM). The new silica-coating method has the potential to significantly promote resin-zirconia bonding. Method: Polished zirconia was cut into specimens 10mmx5mmx5mm (Upcera, China) were immersed in 2M KOH solution and heated up to 90°C. Then, 0.6 wt% of Si3N4powder dispersion was prepared by adding it into the solution. Pretreated zirconia samples were immersed into the dispersion for 6, 24, and 48 h. Next, zirconia samples were air-dried and thermally treated at 1400°C for 2 h. As control, zirconia was silica-coated using Rocatec™ Sand Plus (110 µm silica-coated alumina). The surface morphology and surface roughness were examined by using SEM and AFM. The elemental composition of the zirconia surfaces were examined by using EDX. Surface roughness was measured using AFM. Result: The elemental compositions of zirconia surfaces after surface treatment by sandblasting and silica-coating by Si3N4 hydrolysis are shown in Table. The Si content increased with the immersion period. SEM and AFM micrographs showed that there were changes in the surface morphology of zirconia after surface treatments. The average surface roughness, Ra(µm), of zirconia after sandblasting and silica-coating were: polished only (0.113±0.023), silica-coated by sandblasted (0.296±0.038), silica-coated (6 h): (0.068±0.036), silica-coated (24 h): (0.088±0.055), and silica-coated (48 h) (0.102 ± 0.057). Conclusion: The new surface modification added significantly the Si content on zirconia and thereby might promote more durably resin-zirconia adhesion.
DescriptionOral Presentation
Session 53: Development of Novel Glass and Cement-Based Materials
Persistent Identifierhttp://hdl.handle.net/10722/199316
ISSN
2015 Impact Factor: 4.602
2015 SCImago Journal Rankings: 1.714

 

DC FieldValueLanguage
dc.contributor.authorMatinlinna, JPen_US
dc.contributor.authorLung, YKen_US
dc.contributor.authorLiu, Den_US
dc.contributor.authorTsoi, KHen_US
dc.date.accessioned2014-07-22T01:13:34Z-
dc.date.available2014-07-22T01:13:34Z-
dc.date.issued2014en_US
dc.identifier.citationThe 92nd General Session & Exhibition of the International Association for Dental Research (IADR), Cape Town, South Africa, 25-28 June 2014. In Journal of Dental Research, 2014, v. 93 n. Special issue B: abstract no. 204en_US
dc.identifier.issn0022-0345-
dc.identifier.urihttp://hdl.handle.net/10722/199316-
dc.descriptionOral Presentation-
dc.descriptionSession 53: Development of Novel Glass and Cement-Based Materials-
dc.description.abstractObjective: To characterize silica-coated zirconia surfaces by silicon nitride (Si3N4) hydrolysis under alkaline condition + a thermal treatment, scanning electron microscopy(SEM), energy-dispersive X-ray spectroscopy(EDX) and atomic force spectroscopy(AFM). The new silica-coating method has the potential to significantly promote resin-zirconia bonding. Method: Polished zirconia was cut into specimens 10mmx5mmx5mm (Upcera, China) were immersed in 2M KOH solution and heated up to 90°C. Then, 0.6 wt% of Si3N4powder dispersion was prepared by adding it into the solution. Pretreated zirconia samples were immersed into the dispersion for 6, 24, and 48 h. Next, zirconia samples were air-dried and thermally treated at 1400°C for 2 h. As control, zirconia was silica-coated using Rocatec™ Sand Plus (110 µm silica-coated alumina). The surface morphology and surface roughness were examined by using SEM and AFM. The elemental composition of the zirconia surfaces were examined by using EDX. Surface roughness was measured using AFM. Result: The elemental compositions of zirconia surfaces after surface treatment by sandblasting and silica-coating by Si3N4 hydrolysis are shown in Table. The Si content increased with the immersion period. SEM and AFM micrographs showed that there were changes in the surface morphology of zirconia after surface treatments. The average surface roughness, Ra(µm), of zirconia after sandblasting and silica-coating were: polished only (0.113±0.023), silica-coated by sandblasted (0.296±0.038), silica-coated (6 h): (0.068±0.036), silica-coated (24 h): (0.088±0.055), and silica-coated (48 h) (0.102 ± 0.057). Conclusion: The new surface modification added significantly the Si content on zirconia and thereby might promote more durably resin-zirconia adhesion.-
dc.languageengen_US
dc.publisherSage Publications, Inc.. The Journal's web site is located at http://www.sagepub.com/journalsProdDesc.nav?prodId=Journal201925-
dc.relation.ispartofJournal of Dental Researchen_US
dc.rightsJournal of Dental Research. Copyright © Sage Publications, Inc..-
dc.subjectCeramics-
dc.subjectDental materials-
dc.subjectMethodology-
dc.subjectSurfaces and Technology-
dc.titleCharacterization of nano-silica coating of zirconia for resin-zirconia bondingen_US
dc.typeConference_Paperen_US
dc.identifier.emailMatinlinna, JP: jpmat@hku.hken_US
dc.identifier.emailLung, YK: cyklung@hku.hken_US
dc.identifier.emailTsoi, KH: jkhtsoi@hku.hken_US
dc.identifier.authorityMatinlinna, JP=rp00052en_US
dc.identifier.authorityTsoi, KH=rp01609en_US
dc.identifier.hkuros230567en_US
dc.identifier.volume93-
dc.identifier.issueSpecial issue B: abstract no. 204-
dc.publisher.placeUnited States-

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