Durability of feldspathic veneering ceramic on glass-infiltrated alumina ceramics after long-term thermocycling.

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorMesquita, A. M.
dc.creatorOzcan, M.
dc.creatorSouza, R. O.
dc.creatorKojima, A. N.
dc.creatorNishioka, R. S.
dc.creatorKimpara, Estevão Tomomitsu
dc.creatorBottino, M. A.
dc.date2014-05-27T11:24:43Z
dc.date2016-10-25T18:28:48Z
dc.date2014-05-27T11:24:43Z
dc.date2016-10-25T18:28:48Z
dc.date2010-07-01
dc.date.accessioned2017-04-06T01:41:55Z
dc.date.available2017-04-06T01:41:55Z
dc.identifierMinerva stomatologica, v. 59, n. 7-8, p. 393-399, 2010.
dc.identifier0026-4970
dc.identifierhttp://hdl.handle.net/11449/71770
dc.identifierhttp://acervodigital.unesp.br/handle/11449/71770
dc.identifier2-s2.0-79952798721
dc.identifierhttp://www.minervamedica.it/en/journals/minerva-stomatologica/article.php?cod=R18Y2010N07A0393
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/892703
dc.descriptionThis study compared the bond strength durability of a feldspathic veneering ceramic to glass-infiltrated reinforced ceramics in dry and aged conditions. Disc shaped (thickness: 4 mm, diameter: 4 mm) of glass-infiltrated alumina (In-Ceram Alumina) and glass-infiltrated alumina reinforced by zirconia (In-Ceram Zirconia) core ceramic specimens (N=48, N=12 per groups) were constructed according to the manufacturers' recommendations. Veneering ceramic (VITA VM7) was fired onto the core ceramics using a mold. The core-veneering ceramic assemblies were randomly divided into two conditions and tested either immediately after specimen preparation (Dry) or following 30000 thermocycling (5-55 oC±1; dwell time: 30 seconds). Shear bond strength test was performed in a universal testing machine (cross-head speed: 1 mm/min). Failure modes were analyzed using optical microscope (x20). The bond strength data (MPa) were analyzed using ANOVA (α=0.05). Thermocycling did not decrease the bond strength results for both In-Ceram Alumina (30.6±8.2 MPa; P=0.2053) and In-Ceram zirconia (32.6±9 MPa; P=0.3987) core ceramic-feldspathic veneering ceramic combinations when compared to non-aged conditions (28.1±6.4 MPa, 29.7±7.3 MPa, respectively). There were also no significant differences between adhesion of the veneering ceramic to either In-Ceram Alumina or In-Ceram Zirconia ceramics (P=0.3289). Failure types were predominantly a mixture of adhesive failure between the veneering and the core ceramic together with cohesive fracture of the veneering ceramic. Long-term thermocycling aging conditions did not impair the adhesion of the veneering ceramic to the glass-infiltrated alumina core ceramics tested.
dc.languageeng
dc.relationMinerva stomatologica
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectglass
dc.subjectIn Ceram Alumina
dc.subjectIn Ceram Zirconia
dc.subjectIn-Ceram Alumina
dc.subjectIn-Ceram Zirconia
dc.subjectVITA VM7
dc.subjectceramics
dc.subjectcomparative study
dc.subjectdental bonding
dc.subjectdenture
dc.subjectequipment
dc.subjectevaluation
dc.subjectheat
dc.subjecthumidity
dc.subjectin vitro study
dc.subjectmaterials testing
dc.subjectrandomization
dc.subjectshear strength
dc.subjecttime
dc.subjecttooth prosthesis
dc.subjectCeramics
dc.subjectDental Bonding
dc.subjectDental Porcelain
dc.subjectDental Veneers
dc.subjectEquipment Failure
dc.subjectGlass
dc.subjectHot Temperature
dc.subjectHumidity
dc.subjectMaterials Testing
dc.subjectRandom Allocation
dc.subjectShear Strength
dc.subjectTime Factors
dc.titleDurability of feldspathic veneering ceramic on glass-infiltrated alumina ceramics after long-term thermocycling.
dc.typeOtro


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