Effect of neutralization and hydrofluoric acid precipitate remotion on the compressive strength of monolithic lithium disilicate crowns

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversity of Fortaleza (UNIFOR)-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUniversity Center Christus (UNICHRISTUS)-
Autor(es): dc.contributorNewcastle University-
Autor(es): dc.creatorZogheib, Lucas V.-
Autor(es): dc.creatorLopes, Guilherme R. [UNESP]-
Autor(es): dc.creatorMatos, Jefferson D. [UNESP]-
Autor(es): dc.creatorCastro, Daniel S.-
Autor(es): dc.creatorBottino, Marco A. [UNESP]-
Autor(es): dc.creatorMcCabe, John-
Autor(es): dc.creatorKimpara, Estevão T. [UNESP]-
Data de aceite: dc.date.accessioned2022-08-04T22:11:23Z-
Data de disponibilização: dc.date.available2022-08-04T22:11:23Z-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2021-08-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.23736/S2724-6329.20.04330-7-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/222090-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/222090-
Descrição: dc.descriptionMETHODS: Forty (40) human third molars received conventional full coverage preparation. After performing digital impressions of teeth preparations, ceramic blocks were machined using a CAD/CAM system in order to obtain the crowns. The crowns were distributed in 4 groups as ceramic surface treatment (N.=10): (HF) - 4.9% HF for 20s + air-water spray for 30s; (HFN) - HF + neutralizing agent for 5 min (N); (HFU) - HF + ultrasonic bath for 5 min (U); e (HFNU) - HF + N + U. SEM and EDS analysis was performed in each group in order to characterize the ceramic surface and to verify the chemical element distribution after HF cleaning protocols. A silane layer was applied (for 60s), and crowns were then cemented with dual resin cement. A compressive load was applied on the middle of the occlusal crown surface with a crosshead speed of 1 mm/min until fracture. Data were analyzed using ANOVA and Tukey test (a=0.05). RESULTS: Fluoride ions were found in samples of all postetching cleaning protocols. The mean value (Kgf) was: HF =169.92±21.37; HFN =187.34±34.79; HFU =166.63±40.22 and HFNU=175.26±40.22. The ceramic surface treatment after HF etching did not significantly influence (P>0.05) the compressive strength of the tested ceramic crowns. CONCLUSIONS: Surface treatments with neutralizing agent associated with the ultrasonic bath as the pre-cementation protocol was the most efficient protocol in eliminating the precipitate deposited on the porosities created by acid etching.-
Descrição: dc.descriptionDepartment of Dentistry University of Fortaleza (UNIFOR)-
Descrição: dc.descriptionDepartment of Prosthodontics and Dental Materials São Paulo State University (Unesp) Institute of Science and Technology-
Descrição: dc.descriptionDepartment of Dentistry University Center Christus (UNICHRISTUS)-
Descrição: dc.descriptionSchool of Dental Science Newcastle University-
Descrição: dc.descriptionDepartment of Prosthodontics and Dental Materials São Paulo State University (Unesp) Institute of Science and Technology-
Formato: dc.format133-141-
Idioma: dc.languageen-
Relação: dc.relationMinerva Dental and Oral Science-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectCeramics-
Palavras-chave: dc.subjectCompressive strength-
Palavras-chave: dc.subjectDental stress analysis-
Palavras-chave: dc.subjectHydrofluoric acid-
Palavras-chave: dc.subjectTooth crown-
Título: dc.titleEffect of neutralization and hydrofluoric acid precipitate remotion on the compressive strength of monolithic lithium disilicate crowns-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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