Publication:
Effect of artificial toothbrushing and water storage on the surface roughness and micromechanical properties of tooth-colored CAD-CAM materials.

cris.virtual.author-orcid0000-0001-9390-5412
cris.virtualsource.author-orcid065b4bf8-a2eb-4079-adf0-88d19fb2efcc
cris.virtualsource.author-orcidd9b3fb3e-540e-4774-ab66-db6dccec7678
cris.virtualsource.author-orcid6374ed29-695a-4f29-a8fb-dfd77c0b4972
dc.contributor.authorFlury, Simon
dc.contributor.authorDiebold, Elisabeth
dc.contributor.authorPeutzfeldt, Anne
dc.contributor.authorLussi, Adrian
dc.date.accessioned2024-10-24T18:28:51Z
dc.date.available2024-10-24T18:28:51Z
dc.date.issued2017-06
dc.description.abstractStatement of problem. Because of the different composition of resin-ceramic computer-aided design and computer-aided manufacturing (CAD-CAM) materials, their polishability and their micromechanical properties vary. Moreover, depending on the composition of the materials, their surface roughness and micromechanical properties are likely to change with time. Purpose. The purpose of this in vitro study was to investigate the effect of artificial toothbrushing and water storage on the surface roughness (Ra and Rz) and the micromechanical properties, surface hardness (Vickers [VHN]) and indentation modulus (EIT), of 5 different tooth-colored CAD-CAM materials when polished with 2 different polishing systems. Material and methods. Specimens (n=40 per material) were cut from a composite resin (Paradigm MZ100; 3M ESPE), a feldspathic ceramic (Vitablocs Mark II; Vita Zahnfabrik), a resin nanoceramic (Lava Ultimate; 3M ESPE), a hybrid dental ceramic (Vita Enamic; Vita Zahnfabrik), and a nanocomposite resin (Ambarino High-Class; Creamed). All specimens were roughened in a standardized manner and polished either with Sof-Lex XT discs or the Vita Polishing Set Clinical. Surface roughness, VHN, and EIT were measured after polishing and after storage for 6 months (tap water, 37°C) with periodic, artificial toothbrushing. The surface roughness, VHN, and EIT results were analyzed with a nonparametric ANOVA followed by Kruskal-Wallis and exact Wilcoxon rank sum tests (α=.05). Results. Irrespective of polishing system and of artificial toothbrushing and storage, Lava Ultimate generally showed the lowest surface roughness and Vitablocs Mark II the highest. As regards micromechanical properties, the following ranking of the CAD-CAM materials was found (from highest VHN/EIT to lowest VHN/EIT): Vitablocs Mark II > Vita Enamic > Paradigm MZ100 > Lava Ultimate > Ambarino High-Class. Irrespective of material and of artificial toothbrushing and storage, polishing with Sof-Lex XT discs resulted in lower surface roughness than the Vita Polishing Set Clinical (P≤.016). However, the polishing system generally had no influence on the micromechanical properties (P>.05). The effect of artificial toothbrushing and storage on surface roughness depended on the material and the polishing system: Ambarino High-Class was most sensitive to storage, Lava Ultimate and Vita Enamic were least sensitive. Artificial toothbrushing and storage generally resulted in a decrease in VHN and EIT for Paradigm MZ100, Lava Ultimate, and Ambarino High-Class but not for Vita Enamic and Vitablocs Mark II. Conclusions. Tooth-colored CAD-CAM materials with lower VHN and EIT generally showed better polishability. However, these materials were more prone to degradation by artificial toothbrushing and water storage than materials with higher VHN and EIT.
dc.description.numberOfPages8
dc.description.sponsorshipZahnmedizinische Kliniken, Klinik für Zahnerhaltung, Präventiv- und Kinderzahnmedizin
dc.identifier.doi10.7892/boris.90272
dc.identifier.pmid27836147
dc.identifier.publisherDOI10.1016/j.prosdent.2016.08.034
dc.identifier.urihttps://boris-portal.unibe.ch/handle/20.500.12422/146323
dc.language.isoen
dc.publisherElsevier
dc.relation.ispartofThe journal of prosthetic dentistry
dc.relation.issn1097-6841
dc.relation.organizationDCD5A442BE8FE17DE0405C82790C4DE2
dc.subject.ddc600 - Technology::610 - Medicine & health
dc.titleEffect of artificial toothbrushing and water storage on the surface roughness and micromechanical properties of tooth-colored CAD-CAM materials.
dc.typearticle
dspace.entity.typePublication
dspace.file.typetext
oaire.citation.endPage774
oaire.citation.issue6
oaire.citation.startPage767
oaire.citation.volume117
oairecerif.author.affiliationZahnmedizinische Kliniken, Klinik für Zahnerhaltung, Präventiv- und Kinderzahnmedizin
oairecerif.author.affiliationZahnmedizinische Kliniken, Klinik für Zahnerhaltung, Präventiv- und Kinderzahnmedizin
oairecerif.author.affiliationZahnmedizinische Kliniken, Klinik für Zahnerhaltung, Präventiv- und Kinderzahnmedizin
unibe.contributor.rolecreator
unibe.contributor.rolecreator
unibe.contributor.rolecreator
unibe.contributor.rolecreator
unibe.description.ispublishedpub
unibe.eprints.legacyId90272
unibe.refereedTRUE
unibe.subtype.articlejournal

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