Avaliação de Diferentes Compósitos na Resistência à Fratura de Núcleos de Preenchimento

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorde Souza Setúbal Destro, Andrey
dc.creatorUemura, Eduardo Shigueyuki
dc.creatorYamamoto, Eron Toshio Colauto
dc.date2014-05-27T11:24:49Z
dc.date2016-10-25T18:30:17Z
dc.date2014-05-27T11:24:49Z
dc.date2016-10-25T18:30:17Z
dc.date2010-10-21
dc.date.accessioned2017-04-06T01:43:21Z
dc.date.available2017-04-06T01:43:21Z
dc.identifierPesquisa Brasileira em Odontopediatria e Clinica Integrada, v. 10, n. 2, p. 177-181, 2010.
dc.identifier1519-0501
dc.identifier1983-4632
dc.identifierhttp://hdl.handle.net/11449/71934
dc.identifierhttp://acervodigital.unesp.br/handle/11449/71934
dc.identifier10.4034/1519.0501.2010.0102.0008
dc.identifier2-s2.0-77957969097.pdf
dc.identifier2-s2.0-77957969097
dc.identifierhttp://dx.doi.org/10.4034/1519.0501.2010.0102.0008
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/892850
dc.descriptionObjective: To evaluate and compare the fracture strength of different composite resins used for core buildup. Method: Thirty-six bovine teeth were decoronated at the cervical third to standardize the length of specimens at 20 mm. Under constant irrigation, the canals were prepared with #5 Largo drills corresponding to the size and diameter of #3 Reforpost fiberglass post. The posts were cemented with Enforce resin sealer, being 16 mm inside the root canal and 4 mm outside the root canal, and the material was light-activated for 30 seconds at each side. The specimens were divided into 3 groups (n=12), in which cores (4 mm diameter and 5 mm high) were prepared from a prefabricated standard with three types of composite resins: Group 1: Z100 (3M), Group 2: Z250 (3M) and Group 3: P60 (3M). The specimens were fixed in a cylindrical device with an adaptor at 45o inclination. This device was adapted to a universal testing machine (EMIC) to simulate the force until fracture of the specimen. Data were subjected to ANOVA (p<0.05). Results: The Z250 resin cores presented the highest mean fracture strength (45.453 kgf), while the mean fracture strengths in Group 1 and Group 3 were 38.014 and 39.506 kgf, respectively. P60 caused the largest number of root fractures. Conclusion: Considering the characteristics and properties of the tested resins, Z250 appears as the most indicated for core buildup.
dc.languagepor
dc.relationPesquisa Brasileira em Odontopediatria e Clinica Integrada
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectComposite resins
dc.subjectFratura de dente
dc.subjectMaterial resistance
dc.subjectResinas compostas
dc.subjectResistência de materiais
dc.subjectTooth fractures
dc.titleAvaliação de Diferentes Compósitos na Resistência à Fratura de Núcleos de Preenchimento
dc.typeOtro


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