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Conference Paper: Sandblasting at 90o angle – optimal for resin-titanium bonding?

TitleSandblasting at 90o angle – optimal for resin-titanium bonding?
Authors
KeywordsAdhesion
Biomechanics
Dental materials
Surfaces and Titanium
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. 322 How to Cite?
AbstractObjective: Tradition wisdom tells us that kinetic energy is the greatest at perpendicular (i.e. 90o) when particles are hitting onto the surface. However, in a clinical or dental laboratory setting, such a ‘perfect’ system never exists due to operators’ skills or equipments/devices settings do not allow to do so. The aim of this study was to evaluate the effect of angle and distance for sandblasting on the shear bond strength between titanium and a bonded resin composite. Method: CP2 titanium coupons (150 mm×30 mm×1 mm) were sandblasted tribo-chemically with silica-coated alumina powder (110 μm, Rocatec, 3M ESPE, USA). A custom made jig was used under various contact angles of 45o, 60o, 75o and 90o at constant pressure (3.5 bar), time (15 s), and heights (5 mm, 10 mm and 15 mm). Then, the surfaces were primed with a silane primer (RelyX, 3M ESPE, USA) and 9 resin cement stubs (ø3.6×2 mm, RelyX Unicem Aplicap, 3M ESPE, USA) were bonded and cured on each group. Surface roughness (Ra) and images from scanning electron microscopy (SEM) was evaluated and examined the titanium surfaces before and after sandblasting. Shear bond strength (SBS) between the resin-titanium specimens was measured. Two-way ANOVA was used to test the statistical difference at α=0.05. Result: A change in surface morphology was revealed by SEM. Ra was between 0.88±0.04mm (90o/5mm) to 1.17±0.17mm (60o/5mm). For SBS, an overall ranking of the angle was 75º > 90º > 45º > 60º. The75o and 90o were significantly higher than 45o and 60o(p<0.001). However, no significant difference in changes of sandblasting distance was observed. Conclusion: Sandblasting at various distances and angles contributes differences in surface roughness. However, sandblasting at both 90o and 75o yielded higher SBS for resin-titanium bonding.
DescriptionPoster Presentation
Session 69: Surface Roughness and Wear
Persistent Identifierhttp://hdl.handle.net/10722/199318
ISSN
2015 Impact Factor: 4.602
2015 SCImago Journal Rankings: 1.714

 

DC FieldValueLanguage
dc.contributor.authorTsoi, KHen_US
dc.contributor.authorHo, BJen_US
dc.contributor.authorLung, YKen_US
dc.contributor.authorMatinlinna, JPen_US
dc.date.accessioned2014-07-22T01:13:36Z-
dc.date.available2014-07-22T01:13:36Z-
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. 322en_US
dc.identifier.issn0022-0345-
dc.identifier.urihttp://hdl.handle.net/10722/199318-
dc.descriptionPoster Presentation-
dc.descriptionSession 69: Surface Roughness and Wear-
dc.description.abstractObjective: Tradition wisdom tells us that kinetic energy is the greatest at perpendicular (i.e. 90o) when particles are hitting onto the surface. However, in a clinical or dental laboratory setting, such a ‘perfect’ system never exists due to operators’ skills or equipments/devices settings do not allow to do so. The aim of this study was to evaluate the effect of angle and distance for sandblasting on the shear bond strength between titanium and a bonded resin composite. Method: CP2 titanium coupons (150 mm×30 mm×1 mm) were sandblasted tribo-chemically with silica-coated alumina powder (110 μm, Rocatec, 3M ESPE, USA). A custom made jig was used under various contact angles of 45o, 60o, 75o and 90o at constant pressure (3.5 bar), time (15 s), and heights (5 mm, 10 mm and 15 mm). Then, the surfaces were primed with a silane primer (RelyX, 3M ESPE, USA) and 9 resin cement stubs (ø3.6×2 mm, RelyX Unicem Aplicap, 3M ESPE, USA) were bonded and cured on each group. Surface roughness (Ra) and images from scanning electron microscopy (SEM) was evaluated and examined the titanium surfaces before and after sandblasting. Shear bond strength (SBS) between the resin-titanium specimens was measured. Two-way ANOVA was used to test the statistical difference at α=0.05. Result: A change in surface morphology was revealed by SEM. Ra was between 0.88±0.04mm (90o/5mm) to 1.17±0.17mm (60o/5mm). For SBS, an overall ranking of the angle was 75º > 90º > 45º > 60º. The75o and 90o were significantly higher than 45o and 60o(p<0.001). However, no significant difference in changes of sandblasting distance was observed. Conclusion: Sandblasting at various distances and angles contributes differences in surface roughness. However, sandblasting at both 90o and 75o yielded higher SBS for resin-titanium bonding.-
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.subjectAdhesion-
dc.subjectBiomechanics-
dc.subjectDental materials-
dc.subjectSurfaces and Titanium-
dc.titleSandblasting at 90o angle – optimal for resin-titanium bonding?en_US
dc.typeConference_Paperen_US
dc.identifier.emailTsoi, KH: jkhtsoi@hku.hken_US
dc.identifier.emailLung, YK: cyklung@hku.hken_US
dc.identifier.emailMatinlinna, JP: jpmat@hku.hken_US
dc.identifier.authorityTsoi, KH=rp01609en_US
dc.identifier.authorityMatinlinna, JP=rp00052en_US
dc.identifier.hkuros230569en_US
dc.identifier.volume93-
dc.identifier.issueSpecila issue B: abstract no. 322-
dc.publisher.placeUnited States-

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