dc.contributorUniversidade Estadual Paulista (Unesp)
dc.contributorPI Brånemark Institute
dc.date.accessioned2018-12-11T17:01:00Z
dc.date.available2018-12-11T17:01:00Z
dc.date.created2018-12-11T17:01:00Z
dc.date.issued2017-12-01
dc.identifierJournal of Prosthodontics, v. 26, n. 8, p. 656-658, 2017.
dc.identifier1532-849X
dc.identifier1059-941X
dc.identifierhttp://hdl.handle.net/11449/172567
dc.identifier10.1111/jopr.12456
dc.identifier2-s2.0-84958811507
dc.description.abstractPurpose: To evaluate the effectiveness of abutment screws coated with liquid Vaseline on the screw-joint stability of yttria-stabilized tetragonal zirconia (Y-TZP) abutment systems. Materials and Methods: Forty Y-TZP prefabricated abutments, 20 Neodent and 20 Bionnovation, were tightened to 20 Ncm on their respective external hexagon implants, and divided into four groups (n = 10) according to the screws: coated with Vaseline or uncoated. The removal torque (RT) value of the abutment screw was measured before and after loading. A cyclic loading (0.5 × 106 cycles; 15 Hz) between 11 and 211 N was applied. Means were compared using a repeated-measures ANOVA (α = 0.05). Results: There was no significant difference between coated and uncoated screws (p = 0.822). Significant differences were found between the abutment systems (p < 0.001). There was a significant effect of cyclic loading (p < 0.001). Conclusions: Coated and uncoated screws presented similar effectiveness in maintaining preload. Clinical Relevance: The liquid lubricant used in this study does not influence the stability of Y-TZP single-implant restorations.
dc.languageeng
dc.relationJournal of Prosthodontics
dc.rightsAcesso restrito
dc.sourceScopus
dc.subjectcyclic loading
dc.subjectdental abutments
dc.subjectDental implants
dc.subjectscrew preload
dc.subjectsingle-tooth
dc.subjectzirconium
dc.titleInfluence of Liquid Lubrication on the Screw-Joint Stability of Y-TZP Implant Abutment Systems
dc.typeArtículos de revistas


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