The role of surface modification on zirconia implants to enhance osteoblasts adhesion and proliferation

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dc.contributor.advisor Geis-Gerstorfer, Jürgen (Prof. Dr.)
dc.contributor.author Al Qahtani, Waleed Mohammed S
dc.date.accessioned 2014-11-21T06:45:27Z
dc.date.available 2014-11-21T06:45:27Z
dc.date.issued 2014-11
dc.identifier.other 417640145 de_DE
dc.identifier.uri http://hdl.handle.net/10900/57934
dc.identifier.uri http://nbn-resolving.de/urn:nbn:de:bsz:21-dspace-579347 de_DE
dc.description.abstract The surface structure of the implant plays a crucial role in the success of implantation. Therefore, the surfaces of dental implants have been under continuous development over the past few decades. In zirconia implants, generating surface roughness by sandblasting may induce surface damage and phase transformation from tetragonal to monoclinic phase. To avoid these negative effects, sandblasting prior to sintering is one strategy to generate a rough zirconia surface. The aim of this study was to investigate the influence of surface roughening zirconia base material, TZP, by sandblasting prior to sintering process under defined parameters. The new surface structure was then examined in vitro on the basis of cellular adhesion (after 60 min with crystal violet), cell coverage (after 72 h with crystal violet), proliferation and metabolic activity (24-48 h with BrdU assay and after 48 h with XTT assay, respectively) of human SAOS-2 osteoblasts. Using a Perthometer, the roughened zirconia variants exhibited negligible changes in surface roughness before and after sintering, and they maintained their original mechanical properties by avoiding post-treatment of the surfaces. Initial cell adhesion was positively enhanced by a roughened surface compared to a machined surface. The metabolic activity and proliferation in the log-growth phase were not affected. Surface coverage by cells was slightly decreased on rough zirconia surfaces compared to the machined reference; however, surface coverage on all zirconia surfaces was comparable to that of titanium, indicating good biocompatibility. Therefore, the method used to roughen the zirconia surface in this experiment is suitable for zirconia implants, which is an alternative implant material. Sandblasting before sintering zirconia implants is an appropriate method to create surface roughness without compromising the mechanical strength. en
dc.language.iso en de_DE
dc.publisher Universität Tübingen de_DE
dc.rights ubt-podok de_DE
dc.rights.uri http://tobias-lib.uni-tuebingen.de/doku/lic_mit_pod.php?la=de de_DE
dc.rights.uri http://tobias-lib.uni-tuebingen.de/doku/lic_mit_pod.php?la=en en
dc.subject.classification Zirkon , Oberflächenbehandlung de_DE
dc.subject.ddc 610 de_DE
dc.subject.other surface treatment en
dc.subject.other surface roughness en
dc.subject.other biological tests en
dc.subject.other biologische Prüfung de_DE
dc.subject.other Oberflächenbearbeitung de_DE
dc.subject.other Rauigkeit de_DE
dc.title The role of surface modification on zirconia implants to enhance osteoblasts adhesion and proliferation en
dc.type Dissertation de_DE
dcterms.dateAccepted 2014-10-21
utue.publikation.fachbereich Zahnmedizin de_DE
utue.publikation.fakultaet 4 Medizinische Fakultät de_DE

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