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Influence of polishing systems on roughness and color change of two dental ceramics.
Maciel, Lucas Campagnaro; Silva, Carlos Frederico Bettcher; de Jesus, Ricardo Huver; Concílio, Laís Regiane da Silva; Kano, Stefania Carvalho; Xible, Anuar Antônio.
Afiliação
  • Maciel LC; Dental School, University of Taubaté - UNITAU, Taubaté, São Paulo, Brazil.
  • Silva CFB; Dental School, School of Higher Education of São Francisco de Assis - ESFA, Santa Teresa, Espírito Santo, Brazil.
  • de Jesus RH; Dental School, University Veiga de Almeida - UVA, Rio de Janeiro, Rio de Janeiro, Brazil.
  • Concílio LRDS; Dental School, University of Taubaté - UNITAU, Taubaté, São Paulo, Brazil.
  • Kano SC; Dental School, Federal University of Espírito Santo - UFES, Vitória, Espírito Santo, Brazil.
  • Xible AA; Dental School, Federal University of Espírito Santo - UFES, Vitória, Espírito Santo, Brazil.
J Adv Prosthodont ; 11(4): 215-222, 2019 Aug.
Article em En | MEDLINE | ID: mdl-31497269
PURPOSE: To evaluate the polishing effect on roughness and color change of pressed and layering ceramics after immersion in coffee solution. MATERIALS AND METHODS: 88 ceramic discs (1.0 mm × 10.0 mm) were manufactured - 44 nano-fluorapatite layering ceramics (IPS e.max Ceram. Group C) and 44 pressed lithium disilicate ceramic discs (IPS e. max Press - Group P). Each group was divided into 4 subgroups according to surface treatments: (G) Glaze, (S) Shofu polishing system (Shofu Inc.), (E) Edenta AG polishing System, (KG) 30-µm diamond granulation tip. Surface roughness (Ra) and color change (ΔE) measurings after the surface treatments were performed, before and 12 days after the immersion in coffee solution. A samples' qualitative analysis was conducted with a scanning electron microscopy (SEM). Data were statistically-treated with one-way-ANOVA and Duncan's tests, apart from paired t-test and Pearson's correlation test (α=5%). RESULTS: The decrescent order, both for surface roughness (Ra) and ΔE for both ceramics were: KG > E > S > G (P<.05). With exception for PG and CG subgroups, which did not present statistical difference between them, all other pressed ceramics subgroups presented smaller Ra values and greater ΔE values than the layering ceramics subgroups (P<.05). CONCLUSION: Although mechanical polishing systems presented intermediate Ra values, their colors were considered clinically acceptable. There is a strong correlation between the surface roughness and the color change of tested ceramics.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Tipo de estudo: Qualitative_research Idioma: En Revista: J Adv Prosthodont Ano de publicação: 2019 Tipo de documento: Article País de afiliação: Brasil País de publicação:
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Tipo de estudo: Qualitative_research Idioma: En Revista: J Adv Prosthodont Ano de publicação: 2019 Tipo de documento: Article País de afiliação: Brasil País de publicação: