Influence of polishing systems on roughness and color change of two dental ceramics

To evaluate the polishing effect on roughness and color change of pressed and layering ceramics after immersion in coffee solution. 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 disc...

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Bibliographic Details
Published in:The journal of advanced prosthodontics 2019, 11(4), 53, pp.215-222
Main Authors: Maciel, Lucas Campagnaro, Silva, Carlos Frederico Bettcher, de Jesus, Ricardo Huver, Concílio, Laís Regiane da Silva, Kano, Stefania Carvalho, Xible, Anuar Antônio
Format: Article
Language:English
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치의학
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Summary:To evaluate the polishing effect on roughness and color change of pressed and layering ceramics after immersion in coffee solution. 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%). The decrescent order, both for surface roughness (Ra) and ΔE for both ceramics were: KG > E > S > G (
ISSN:2005-7806
2005-7814
DOI:10.4047/jap.2019.11.4.215