A new approach for Y-TZP surface treatment: evaluations of roughness and bond strength to resin cement
| Autor: | ZENS, Marlyni Aparecida, ICOCHEA, Alfredo Llerena, COSTA, Bruna Carolina, LISBOA-FILHO, Paulo Noronha, BASTOS, Natália Almeida, FRANCISCONI, Paulo Afonso Silveira, FURUSE, Adilson Yoshio, FOSCHINI, Cesar, GERLIN-NETO, Vicente, BORGES, Ana Flávia Sanches |
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| Přispěvatelé: | Universidade de São Paulo (USP), Universidade Estadual Paulista (Unesp) |
| Rok vydání: | 2019 |
| Předmět: |
Ceramics
Materials science Surface Properties Dental air abrasion Sonication Sintering Surface finish Aluminum oxide ALUMÍNIO Statistics Nonparametric 030207 dermatology & venereal diseases 03 medical and health sciences 0302 clinical medicine Reference Values Materials Testing Shear strength Surface roughness Yttrium Ceramic Composite material General Dentistry Analysis of Variance Bond strength Dental Bonding technology industry and agriculture Reproducibility of Results 030206 dentistry Resin Cements lcsh:RK1-715 Confocal microscopy Air Abrasion Dental Air abrasion visual_art lcsh:Dentistry visual_art.visual_art_medium Original Article Zirconium |
| Zdroj: | Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP Scopus Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP Journal of Applied Oral Science v.27 2019 Journal of applied oral science Journal of Applied Oral Science, Volume: 27, Article number: e20180449, Published: 11 APR 2019 Journal of Applied Oral Science, Vol 27, Iss 0 (2019) Journal of Applied Oral Science |
| ISSN: | 1678-7757 |
| Popis: | Made available in DSpace on 2019-10-06T15:41:40Z (GMT). No. of bitstreams: 0 Previous issue date: 2019-01-01. Added 1 bitstream(s) on 2019-10-09T18:34:52Z : No. of bitstreams: 1 S1678-77572019000100446.pdf: 3426361 bytes, checksum: a99637603bcb983491f897ff315978f4 (MD5) Objective: This study aims to evaluate the effect of sonochemical treatment on the surface of yttria-stabilized tetragonal zirconia (Y-TZP) before and after the final sintering. Material and Methods: Twenty-eight Y-TZP discs were divided into four groups (n=7), according to surface treatment: PRE: pre-sintering sonication with 30% nominal power for 15 min; POS: postsintering sonication with 30% nominal power for 15 min; JAT: air abrasion with 50-µm alumina particles; and CON: control group with no treatment. The POS and JAT groups were sintered before sonication and the PRE group after sonication. Surface roughness was analyzed using confocal microscopy, after which resin cement cylinders were placed on the surface of the Y-TZP discs and subjected to mechanical microshear bond strength test until fracture. Surface roughness and microshear bond strength values underwent ANOVA and the Tukey tests. Results: The surface roughness values for the PRE group (299.91 nm) and the POS group (291.23 nm) were not significantly different (p≥0.05), statistically, and the surface roughness value of the JAT group (925.21 nm) was higher than those of PRE and POS (p=0.007) groups. The mechanical microshear bond strength test showed that there was no statistically significant difference between the groups (p=0.08). Conclusions: Therefore, the results showed that sonochemical treatment modifies the Y-TZP surface and is similar to the well-established sandblasting surface treatment regarding the strength of the bond with the resin cement. Universidade de São Paulo Faculdade de Odontologia de Bauru Departamento de Dentística Endodontia e Materiais Dentários Universidade Estadual Paulista (UNESP) Departamento de Física Universidade Estadual Paulista (UNESP) Departamento de Engenharia Mecânica Universidade Estadual Paulista (UNESP) Departamento de Física Universidade Estadual Paulista (UNESP) Departamento de Engenharia Mecânica |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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