Influence Of Abutment Type And Esthetic Veneering On Preload Maintenance Of Abutment Screw Of Implant-supported Crowns

dc.creatorDelben J.A.
dc.creatorBarao V.A.R.
dc.creatorDos Santos P.H.
dc.creatorAssuncao W.G.
dc.date2014
dc.date2015-06-25T17:56:47Z
dc.date2015-11-26T14:46:59Z
dc.date2015-06-25T17:56:47Z
dc.date2015-11-26T14:46:59Z
dc.date.accessioned2018-03-28T21:57:06Z
dc.date.available2018-03-28T21:57:06Z
dc.identifier
dc.identifierJournal Of Prosthodontics. , v. 23, n. 2, p. 134 - 139, 2014.
dc.identifier1059941X
dc.identifier10.1111/jopr.12065
dc.identifierhttp://www.scopus.com/inward/record.url?eid=2-s2.0-84894090600&partnerID=40&md5=ae319f58714a15b871a7b7a6d556d16e
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/87115
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/87115
dc.identifier2-s2.0-84894090600
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1253083
dc.descriptionPurpose: The effect of veneering materials on screw joint stability remains inconclusive. Thus, this study evaluated the preload maintenance of abutment screws of single crowns fabricated with different abutments and veneering materials. Materials and Methods: Sixty crowns were divided into five groups (n = 12): UCLA abutment in gold alloy with ceramic (group GC) and resin (group GR) veneering, UCLA abutment in titanium with ceramic (group TiC) and resin (group TiR) veneering, and zirconia abutment with ceramic veneering (group ZiC). Abutment screws made of gold were used with a 35 Ncm insertion torque. Detorque measurements were obtained initially and after mechanical cycling. Data were analyzed by ANOVA and Fisher's exact test at a significance level of 5%. Results: For the initial detorque means (in Ncm), group TiC (21.4 ± 1.78) exhibited statistically lower torque maintenance than groups GC (23.9 ± 0.91), GR (24.1 ± 1.34), and TiR (23.2 ± 1.33) (p < 0.05, Fisher's exact test). Group ZiC (21.9 ± 2.68) exhibited significantly lower torque maintenance than groups GC, GR, and TiR (p < 0.05, Fisher's exact test). After mechanical cycling, there was a statistically significant difference between groups TiC (22.1 ± 1.86) and GR (23.8 ± 1.56); between groups ZiC (21.7 ± 2.02) and GR; and also between groups ZiC and TiR (23.6 ± 1.30) (p < 0.05, Fisher's exact test). Conclusions: Detorque reduction occurred regardless of abutment type and veneering material. More irregular surfaces in the hexagon area of the castable abutments were observed. The superiority of any veneering material concerning preload maintenance was not established. © 2013 by the American College of Prosthodontists.
dc.description23
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dc.description134
dc.description139
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dc.languageen
dc.publisher
dc.relationJournal of Prosthodontics
dc.rightsfechado
dc.sourceScopus
dc.titleInfluence Of Abutment Type And Esthetic Veneering On Preload Maintenance Of Abutment Screw Of Implant-supported Crowns
dc.typeArtículos de revistas


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