Impact strength of denture base and reline acrylic resins subjected to long-term water immersion

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorWady, Amanda Fucci
dc.creatorMachado, Ana Lucia
dc.creatorVergani, Carlos Eduardo
dc.creatorPavarina, Ana Claudia
dc.creatorGiampaolo, Eunice Teresinha
dc.date2014-05-27T11:25:52Z
dc.date2016-10-25T18:33:54Z
dc.date2014-05-27T11:25:52Z
dc.date2016-10-25T18:33:54Z
dc.date2011-05-13
dc.date.accessioned2017-04-06T01:50:26Z
dc.date.available2017-04-06T01:50:26Z
dc.identifierBrazilian Dental Journal, v. 22, n. 1, p. 56-61, 2011.
dc.identifier0103-6440
dc.identifier1806-4760
dc.identifierhttp://hdl.handle.net/11449/72425
dc.identifierhttp://acervodigital.unesp.br/handle/11449/72425
dc.identifier10.1590/S0103-64402011000100010
dc.identifierS0103-64402011000100010
dc.identifier2-s2.0-79955765673.pdf
dc.identifier2-s2.0-79955765673
dc.identifierhttp://dx.doi.org/10.1590/S0103-64402011000100010
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/893296
dc.descriptionWater may influence the mechanical properties of the acrylic resins. Thus, the effect of water storage on the impact strength (IS) of one denture base (Lucitone 550 - L) and four reline resins (Tokuyama Rebase II - T; UfiGel Hard - U; Kooliner - K; New Truliner - NT) was evaluated. Bars of L were made (60 x 6 x 2 mm) and relined (2 mm) with T, U, K, NT and L. Intact specimens of each material (60 x 6 x 4 mm) were also fabricated for comparative purposes. Specimens were submitted to Charpy impact tests without water storage (control) and after immersion in water for 7, 90 and 180 days. Data (kJ/m 2) analyzed by two-way ANOVA and Tukey's test (p=0.05) revealed that after 90 days, U exhibited an increase in the IS (0.93) compared to 7 days (0.58). K (1.48) and L/K (7.21) exhibited a decrease at the 7-day period (1.01 and 3.23, respectively). NT (0.60) showed an increase in the IS after 180 days (1.52), whereas L/ NT (7.70) showed a decrease (3.17). Water immersion improved the IS of U and NT, and decreased the IS of K, L/K, and L/NT. Water may affect differently the IS of acrylic resins and, consequently, the resistance to fracture of relined denture bases.
dc.languageeng
dc.relationBrazilian Dental Journal
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectAcrylic resins
dc.subjectImpact strength
dc.subjectRelining
dc.subjectRemovable dentures
dc.subjectWater immersion
dc.subjectacrylic acid resin
dc.subjectwater
dc.subjectadhesion
dc.subjectchemistry
dc.subjectcomparative study
dc.subjectdental care
dc.subjectdenture
dc.subjectimmersion
dc.subjectmastication
dc.subjectmaterials testing
dc.subjectAcrylic Resins
dc.subjectAdhesiveness
dc.subjectBite Force
dc.subjectDental Stress Analysis
dc.subjectDenture Bases
dc.subjectDenture Liners
dc.subjectDenture Rebasing
dc.subjectImmersion
dc.subjectMaterials Testing
dc.subjectWater
dc.titleImpact strength of denture base and reline acrylic resins subjected to long-term water immersion
dc.typeOtro


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