Retention force and fatigue strength of overdenture attachment systems

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dc.contributor.authorBotega, D. M.
dc.contributor.authorMesquita, M. F.
dc.contributor.authorHenriques, GEP
dc.contributor.authorVaz, Luis Geraldo [UNESP]
dc.contributor.institutionUniversidade Estadual de Campinas (UNICAMP)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:24:24Z
dc.date.available2014-05-20T15:24:24Z
dc.date.issued2004-09-01
dc.description.abstractThis study evaluated retention force and fatigue resistance of two overdenture attachment systems. Twenty samples (O-ring and Bar-Clip) from two manufacturers (Conexao Sistemas de Protese and Lifecore Biomedical) were prepared and divided into four groups: (i) Conexao/O-ring; (ii) Conexao/Bar-Clip; (iii) Lifecore/O-ring and (iv) Lifecore/Bar-Clip, with five samples in each group. They were submitted to mechanical fatigue test using a servohydraulic machine performing 5500 cycles of insertion and removal (f=0.8 Hz), immersed in artificial saliva. Retention force values were obtained three times (0, 3000 and after 5500 cycles) simulating the clinical service, using a tensile strength at 1 mm min(-1) and load cell of 1 kN. Data were analysed with analysis of variance and Tukey's test at 5% level. Results showed that Conexao/Bar-Clip specimens had significantly higher retention values than Lifecore/Bar-Clip (44.61 and 18.44 N, respectively), Conexao/O-ring specimens had significantly lower values than Lifecore/O-ring (13.91 and 19.75 N, respectively). Conexao/Bar-Clip values were always significantly higher than those of Conexao/O-ring group (44.61 and 13.91 N, respectively). Lifecore (O-ring and Bar-Clip) presented similar values (19.75 and 18.44 N, respectively). The systems evaluated showed satisfactory retention force values, before and after fatigue testing. Conexao/Bar-Clip specimens presented the highest values. A 5-year simulation of insertion and removal did not decrease retention values or fracture components.en
dc.description.affiliationUniv Campinas, Piracicaba Dent Sch, Dept Prosthodont & Periodontol, Piracicaba, Brazil
dc.description.affiliationSão Paulo State Univ, Dept Dent Mat & Prosthodont, Araraquara Dent Sch, Araraquara, SP, Brazil
dc.description.affiliationUnespSão Paulo State Univ, Dept Dent Mat & Prosthodont, Araraquara Dent Sch, Araraquara, SP, Brazil
dc.format.extent884-889
dc.identifierhttp://dx.doi.org/10.1111/j.1365-2842.2004.01308.x
dc.identifier.citationJournal of Oral Rehabilitation. Oxford: Blackwell Publishing Ltd, v. 31, n. 9, p. 884-889, 2004.
dc.identifier.doi10.1111/j.1365-2842.2004.01308.x
dc.identifier.issn0305-182X
dc.identifier.lattes8547747556446020
dc.identifier.urihttp://hdl.handle.net/11449/35012
dc.identifier.wosWOS:000223907700011
dc.language.isoeng
dc.publisherBlackwell Publishing
dc.relation.ispartofJournal of Oral Rehabilitation
dc.relation.ispartofjcr2.051
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectoverdenturespt
dc.subjectattachmentspt
dc.subjectosseointegrated implantspt
dc.subjectmechanical propertiespt
dc.subjectfatigue strengthpt
dc.subjectretentionpt
dc.titleRetention force and fatigue strength of overdenture attachment systemsen
dc.typeArtigo
dcterms.licensehttp://olabout.wiley.com/WileyCDA/Section/id-406071.html
dcterms.rightsHolderBlackwell Publishing Ltd
unesp.author.lattes8547747556446020
unesp.author.orcid0000-0003-0916-1962[4]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Odontologia, Araraquarapt

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