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

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dc.authorid0000-0003-2174-8934
dc.contributor.authorOzan, Günce
dc.contributor.authorMert Eren, Meltem
dc.contributor.authorDikmen, Benin
dc.contributor.authorYıldız, Esra
dc.date.accessioned2023-01-09T08:08:40Z
dc.date.available2023-01-09T08:08:40Z
dc.date.issued2022
dc.departmentİstanbul Medipol Üniversitesi, Diş Hekimliği Fakültesi, Restoratif Diş Tedavisi Ana Bilim Dalı
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.
dc.identifier.citationOzan, G., Mert Eren, M., Dikmen, B. ve Yıldız, E. (2022). Fracture resistance of endodontically treated premolars restored with CAD-CAM onlays. American Journal of Dentistry, 35(6), 308-314.
dc.identifier.endpage314
dc.identifier.issn0894-8275
dc.identifier.issue6
dc.identifier.pmid36508186
dc.identifier.scopus2-s2.0-85144584286
dc.identifier.scopusqualityQ2
dc.identifier.startpage308
dc.identifier.urihttps://hdl.handle.net/20.500.12511/10263
dc.identifier.volume35
dc.identifier.wos000911061700005en_US
dc.identifier.wosqualityQ4
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.institutionauthorDikmen, Benin
dc.language.isoen
dc.publisherNLM (Medline)
dc.relation.ispartofAmerican Journal of Dentistryen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectCAD-CAM Onlays
dc.subjectFracture Resistance
dc.subjectEndodontically Treated
dc.titleFracture resistance of endodontically treated premolars restored with CAD-CAM onlays
dc.typeArticle

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