Effect of mastication simulation on the phase transformation of posterior 3-unit monolithic zirconia fixed dental prostheses

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dc.authoridErdinc, Gulbahar/0000-0002-0883-9834
dc.authoridBulbul, Mehmet/0000-0002-4956-7548
dc.contributor.authorErdinc, Gulbahar
dc.contributor.authorBulbul, Mehmet
dc.date.accessioned2024-09-29T16:00:36Z
dc.date.available2024-09-29T16:00:36Z
dc.date.issued2021
dc.departmentKarabük Üniversitesien_US
dc.description24th International Congress of Turkish-Association-of-Prosthodontics-and-Implantology -- OCT 31-NOV 03, 2019 -- Mugla, TURKEYen_US
dc.description.abstractStatement of problem. Monolithic zirconia restorations are directly exposed to cyclic loads and temperature changes in the oral cavity after cementation. These stresses may reduce the long-term success of the material by causing uncontrolled phase transformations within the zirconia. Purpose. The purpose of this in vitro study was to evaluate the effect of mastication simulation and different measurement points on the phase transformation of posterior 3-unit monolithic zirconia partial fixed dental prostheses (FDPs) in the posterior region. Material and methods. Posterior 3-unit FDPs of monolithic yttria-stabilized tetragonal zirconia polycrystalline (Y-TZP), including BruxZir Shaded (group B), FireZr (group F), and Upcera (group U) (n=10), were machined from presintered blocks. All specimens were exposed to mastication simulation (240000 cycles/1.7 Hz/50 N). The monoclinic phase content was evaluated by X-ray diffraction (XRD). Phase transformation was measured at the mesial connector (group M), distal connector (group D), and pontic regions (group P) before and after mastication simulation. The relative monoclinic phase amount (Xm) was calculated for all specimens. The data were analyzed by ANOVA and post hoc tests (alpha=.05). Results. According to XRD analysis, Xm for all groups and regions showed higher results after aging than before aging (P<.05). Group B has the lowest Xm among the groups. Group B showed a statistically significant difference compared with both group F and group U (P<.05). There was no significant difference between group F and group U (P>.05). When the regions were evaluated regardless of brand and the groups were evaluated in terms of regions, no statistically significant difference was observed between connectors and the pontic region (P>.05). Conclusions. Mastication simulation causes an increase in the Xm. However, this increase was unlikely to be clinically significant. There may be differences in phase transformation depending on the contents of the brands and sintering procedures. Variations in the phase quantity were independent of the connector regions and pontic for FDPs.en_US
dc.description.sponsorshipTurkish Assoc Prosthodont & Implantolen_US
dc.description.sponsorshipScientific Research Project Council of Eskisehir Osmangazi University [201845043]en_US
dc.description.sponsorshipSupported by project no. 201845043 from the Scientific Research Project Council of Eskisehir Osmangazi University. Presented at the 24th International Congress of Turkishen_US
dc.identifier.doi10.1016/j.prosdent.2021.09.022
dc.identifier.issn0022-3913
dc.identifier.issn1097-6841
dc.identifier.issue6en_US
dc.identifier.pmid34688478en_US
dc.identifier.scopus2-s2.0-85119121466en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org/10.1016/j.prosdent.2021.09.022
dc.identifier.urihttps://hdl.handle.net/20.500.14619/5231
dc.identifier.volume126en_US
dc.identifier.wosWOS:000728599400014en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakPubMeden_US
dc.language.isoenen_US
dc.publisherMosby-Elsevieren_US
dc.relation.ispartofJournal of Prosthetic Dentistryen_US
dc.relation.publicationcategoryKonferans Öğesi - Uluslararası - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectMonoclinic Transformationen_US
dc.subjectStructural Stabilityen_US
dc.subjectFlexural Strengthen_US
dc.subjectPartial Denturesen_US
dc.subjectBond Strengthen_US
dc.subjectPerformanceen_US
dc.subjectResistanceen_US
dc.subjectMorphologyen_US
dc.subjectSurfaceen_US
dc.titleEffect of mastication simulation on the phase transformation of posterior 3-unit monolithic zirconia fixed dental prosthesesen_US
dc.typeConference Objecten_US

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