dc.contributor.author | Øilo, Marit | |
dc.contributor.author | Haugli, Ketil | |
dc.contributor.author | Rønold, Hans Jacob | |
dc.contributor.author | Ulsund, Amanda H. | |
dc.contributor.author | Ruud, Amund | |
dc.contributor.author | Kvam, Ketil | |
dc.date.accessioned | 2021-08-17T11:28:39Z | |
dc.date.available | 2021-08-17T11:28:39Z | |
dc.date.created | 2021-08-04T10:40:43Z | |
dc.date.issued | 2021 | |
dc.identifier.issn | 0039-9353 | |
dc.identifier.uri | https://hdl.handle.net/11250/2768831 | |
dc.description.abstract | Objectve
Several pre-cementation procedures have been advocated to enhance adhesion between zirconia and resin-based cement. There is, however, limited documentation on how these pre-treatments affect the strength of zirconia crowns as most tests are performed on discs or bars.
The aim was to assess the effect of pre-cementation procedures on fracture mode, fracture strength and cement retention on zirconia.
Methods
Two dental zirconia materials with different yttria content were assessed (<4 and>5 mol%). Both discs (n = 45) and crown-shaped specimens (n = 30) of the two materials were pretreated with either air-abrasion or hot-etching with KHF2 and compared with untreated controls with regards to surface roughness, crystallography, wettability, cement adhesion and fracture strength.
Results and Significance
Air-abrasion improves adhesion and strength of zirconia with moderate yttria content (<4 mol%). Acid etching with heated KHF2 showed the best effect on strength and cement retention on zirconia with higher yttria content (>5 mol%). Application of KHF2 was, however, complicated on crown-shaped specimens. Pre-treatment and cementation protocols should be optimized for different dental zirconias to improve both strength and retention. | en_US |
dc.language.iso | dan | en_US |
dc.publisher | Elsevier | en_US |
dc.relation.uri | http://www.tandlaegebladet.dk/retention-af-cementerede-protetiske-erstatninger | |
dc.rights | Navngivelse 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/deed.no | * |
dc.title | Pre-cementation procedures’ effect on dental zirconias with different yttria content | en_US |
dc.type | Journal article | en_US |
dc.type | Peer reviewed | en_US |
dc.description.version | publishedVersion | en_US |
dc.rights.holder | Copyright 2021 The Authors. | en_US |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 1 | |
dc.identifier.doi | https://doi.org/10.1016/j.dental.2021.07.001 | |
dc.identifier.cristin | 1923796 | |
dc.source.journal | Dental Materials | en_US |
dc.source.pagenumber | 1425-1436 | en_US |
dc.identifier.citation | Dental Materials. 2021, 37 (9), 1425-1436. | en_US |
dc.source.volume | 37 | en_US |
dc.source.issue | 9 | en_US |