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dc.contributor.authorBasílio, Mariana de Almeida [UNESP]
dc.contributor.authorAbi-Rached, Filipe de Oliveira [UNESP]
dc.contributor.authorButignon, Luis Eduardo
dc.contributor.authorArioli Filho, João Neudenir [UNESP]
dc.identifier.citationJournal of Prosthodontics, v. 26, n. 8, p. 656-658, 2017.
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.en
dc.relation.ispartofJournal of Prosthodontics
dc.subjectcyclic loading
dc.subjectdental abutments
dc.subjectDental implants
dc.subjectscrew preload
dc.titleInfluence of Liquid Lubrication on the Screw-Joint Stability of Y-TZP Implant Abutment Systemsen
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionPI Brånemark Institute
dc.description.affiliationDepartment of Dental Materials and Prosthodontics UNESP—Univ Estadual Paulista Araraquara School of Dentistry
dc.description.affiliationDepartment of Prosthodontics PI Brånemark Institute
dc.description.affiliationUnespDepartment of Dental Materials and Prosthodontics UNESP—Univ Estadual Paulista Araraquara School of Dentistry
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