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dc.contributor.CRUESPUniversidade Estadual de Campinaspt_BR
dc.typeArtigo de periódicopt_BR
dc.titleEffect of Metallic Flask Closure and Investment Materials on the Stability of the Denture Base Resinpt_BR
dc.contributor.authorConsani, RLXpt_BR
dc.contributor.authorMesquita, MFpt_BR
dc.contributor.authorSobrinho, LCpt_BR
dc.contributor.authorSinhoreti, MACpt_BR
unicamp.authorXediek Consani, Rafael Leonardo Mesquita, Marcelo Ferraz Univ Estadual Campinas, Piracicaba Dent Sch, Dept Prosthodont & Periodont, BR-13414903 Piracicaba, SP, Brazilpt_BR
unicamp.authorCorrer Sobrinho, Lourenco Coelho Sinhoreti, Mario Alexandre Univ Estadual Campinas, Piracicaba Dent Sch, Dept Restorat Dent, BR-13414903 Piracicaba, SP, Brazilpt_BR
dc.subjectdental polymerspt_BR
dc.subject.wosDimensional Stabilitypt_BR
dc.description.abstractThis study evaluated the dimensional stability of the poly-methylmethacrylate (PMMA) denture bases under the effect of different metallic flask closure techniques (FCT) and investment materials, (IM). Sixty stone cast maxillary-wax base plate sets were randomly assigned to six groups (n = 10) for the following treatments: 1 and 4-stone or silicone investments and flask closure with clamp; 2 and 5-stone or silicone investments and flask closure with RS system; 3 and 6-stone or silicone investments and flask closure with screws. PMMA denture bases were polymerized in a water bath at 74 degrees C for 9 h. PMMA base-stone cast sets were sectioned at regions (R) of the canines, first molars, and posterior palatal zone. Gap discrepancies were measured at five points: right and left ridge crests, palatal midline, and right and left marginal limits of the flanges. An optical micrometer with accuracy of 0.0005 mm was used for measurement purposes. Data were submitted to ANOVA and Tukey's test (alpha = 0.05). Silicone showed an adaptation mean (0.177 mm) significantly different when compared with stone (0.207 mm). The RS system presented a statistically different adaptation mean (0.1.66 mm) in relation to the traditional clamp (0.200 mm) and flask with screws (0.211 mm). Adaptation values for the regions of the canines (0.141 mm), first molars (0.185 mm), and posterior palatal (0.250 mm) were statistically different. For all flask closure techniques, better adaptation was shown with the RS system and silicone investment. (C) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 116: 1467-1474, 2010pt
dc.relation.ispartofJournal Of Applied Polymer Sciencept_BR
dc.relation.ispartofabbreviationJ. Appl. Polym. Sci.pt_BR
dc.publisherJohn Wiley & Sons Incpt_BR 5pt_BR
dc.identifier.citationJournal Of Applied Polymer Science. John Wiley & Sons Inc, v. 116, n. 3, n. 1467, n. 1474, 2010.pt_BR
dc.sourceWeb of Sciencept_BR
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