Fracture resistance of endodontically treated premolars restored with CAD-CAM onlays

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dc.contributor.authorOzan, Günce
dc.contributor.authorEren, Meltem M.
dc.contributor.authorDikmen, Benin
dc.contributor.authorYıldız, Esra
dc.date.accessioned2022-12-22T10:36:05Z
dc.date.available2022-12-22T10:36:05Z
dc.date.issued2022en_US
dc.departmentFakülteler, Diş Hekimliği Fakültesi, Restoratif Diş Tedavisi Ana Bilim Dalıen_US
dc.description.abstractPurpose: To evaluate the fracture resistance of endodontically treated premolars restored with CAD-CAM onlay restorations. Methods: 60 extracted mandibular first premolars were selected and at first divided into three groups regarding treatment options: MOD onlay with buccal cusp coverage, MOD onlay with buccal cusp coverage + endodontic treatment, MOD onlay with buccal cusp coverage + endodontic treatment + fiber post. Then, all groups were divided into subgroups (n=10) according to the restorative material used: IPS e.max CAD and Lava Ultimate. Each group was submitted to 5,000 thermal cycles, embedded in acrylic resin and secured in a universal testing machine respectively. A compressive load was applied until fracture, at a crosshead speed of 0.5 mm/minute. Statistical significance among each group was analyzed using one-way ANOVA and Bonferroni tests. Results: Statistically, endodontically treated IPS e.max onlays had numerically the lowest average fracture resistance [753.1 (± 224.9) N/mm² ] among all treatment options. IPS e.max onlays treated with fiber posts had significantly higher resistance than that of endodontically treated IPS e.max CAD group (P= 0.013). Endodontically treated teeth restored with Lava Ultimate onlays [1,381.0 (± 471.7) N/mm²] showed significantly higher averages of fracture resistance than IPS e.max CAD onlays. Clinical significance: CAD-CAM composite (resin nanoceramic) onlays resist greater forces compared to ceramic restorations. Fiber posts could improve the fracture resistance of endodontically treated mandibular premolars following the ceramic CAD-CAM onlays.en_US
dc.identifier.citationOzan, G., Eren, M. M., Dikmen, B. Yıldız, E. (2022). Fracture resistance of endodontically treated premolars restored with CAD-CAM onlays. American Journal of Dentistry, 35(6), 308-314.en_US
dc.identifier.endpage314en_US
dc.identifier.issue6en_US
dc.identifier.scopus2-s2.0-85144584286
dc.identifier.scopusqualityQ3
dc.identifier.startpage308en_US
dc.identifier.urihttps://hdl.handle.net/20.500.12939/3141
dc.identifier.volume35en_US
dc.identifier.wosWOS:000911061700005
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.institutionauthorEren, Meltem M.
dc.language.isoen
dc.relation.ispartofAmerican Journal of Dentistry
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectFracture Resistanceen_US
dc.subjectCAD-CAM Onlay Restorationsen_US
dc.titleFracture resistance of endodontically treated premolars restored with CAD-CAM onlays
dc.typeArticle

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