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dc.contributor.authorOzcan, Nihal
dc.contributor.authorSahin, Erdal
dc.date.accessioned2019-12-16T07:02:27Z
dc.date.available2019-12-16T07:02:27Z
dc.date.issued2013
dc.identifier.issn1305-7456
dc.identifier.urihttps://doi.org/10.4103/1305-7456.120671
dc.identifier.urihttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC4053671/
dc.identifier.urihttp://hdl.handle.net/11655/19168
dc.description.abstractObjective: For most endodontically treated teeth, tooth-colored post-core systems are preferable for esthetic reasons. Therefore, improvements in material strength must also consider tooth colored post-core complexes. The objective of this study was to evaluate the difference in tooth colored post–core complex strengths. Materials and Methods: A total of 33 human maxillary central incisor teeth were used for this study, with three groups of 11 teeth. Three different methods were used to fabricate all-ceramic post-core restorations: zirconia blanks, Cerec 3D-milled to one-piece post-core restorations (Test Group 1); feldspathic cores (from feldspathic prefabricated CAD/CAM blocks) adhesively luted to CosmoPost zirconia posts (Test Group 2); and IPS Empress cores directly pressed to CosmoPost zirconia posts (Test Group 3). All-ceramic crowns from feldspathic ceramic were constructed using a CAD/CAM system (Cerec 3D) for all specimens. The post-core complexes were tested to failure with the load applied at 45° angled relative to the tooth long axis. The load at fracture was recorded. Results: The maximum fracture strength of the milled zirconia cores (Test Group 1) was 577 N; corresponding values for the milled feldspathic cores (Test Group 2) and the pressed cores (Test Group 3) were 586 and 585 N, respectively. Differences were not statistically significant at P < 0.05 (P = 0.669). Conclusions: All-ceramic cores adhesively luted on zirconia posts and one-piece all-ceramic zirconium post–core structures offer a viable alternative to conventional pressing.
dc.relation.isversionof10.4103/1305-7456.120671
dc.rightsinfo:eu-repo/semantics/openAccess
dc.titleIn Vitro Evaluation Of The Fracture Strength Of All-Ceramic Core Materials On Zirconium Posts
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion
dc.relation.journalEuropean Journal of Dentistry
dc.contributor.departmentProtetik Diş Tedavisi
dc.identifier.volume7
dc.identifier.issue4
dc.identifier.startpage455
dc.identifier.endpage460
dc.description.indexPubMed
dc.description.indexScopus


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