dc.contributor.author | Ozcan, Nihal | |
dc.contributor.author | Sahin, Erdal | |
dc.date.accessioned | 2019-12-16T07:02:27Z | |
dc.date.available | 2019-12-16T07:02:27Z | |
dc.date.issued | 2013 | |
dc.identifier.issn | 1305-7456 | |
dc.identifier.uri | https://doi.org/10.4103/1305-7456.120671 | |
dc.identifier.uri | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4053671/ | |
dc.identifier.uri | http://hdl.handle.net/11655/19168 | |
dc.description.abstract | Objective: 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.isversionof | 10.4103/1305-7456.120671 | |
dc.rights | info:eu-repo/semantics/openAccess | |
dc.title | In Vitro Evaluation Of The Fracture Strength Of All-Ceramic Core Materials On Zirconium Posts | |
dc.type | info:eu-repo/semantics/article | |
dc.type | info:eu-repo/semantics/publishedVersion | |
dc.relation.journal | European Journal of Dentistry | |
dc.contributor.department | Protetik Diş Tedavisi | |
dc.identifier.volume | 7 | |
dc.identifier.issue | 4 | |
dc.identifier.startpage | 455 | |
dc.identifier.endpage | 460 | |
dc.description.index | PubMed | |
dc.description.index | Scopus | |