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Ceramics 2018, 1(1), 145-152;

Bacterial Adhesion on Lithium Disilicate Ceramic Surface Exposed to Different Hydrofluoric Solutions

Department of Dental Materials and Prosthodontics, School of Dentistry, UNESP—São Paulo State University, São Paulo 16015-050, Brazil
Department of Prosthodontics and Periodontology, University of Campinas (UNICAMP), São Paulo 13414-903, Brazil
UNIEURO University Center, Brasília 70790-160, Brazil
Laboratory of Technological Plasmas, São Paulo State University (UNESP), São Paulo 18087-180, Brazil
Author to whom correspondence should be addressed.
Received: 18 July 2018 / Revised: 7 August 2018 / Accepted: 15 August 2018 / Published: 19 August 2018
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The effect of Fluorine solutions on the surface and bacterial adhesion of lithium disilicate is a concern. The aim was to evaluate the surface roughness and the adhesion of Streptococcus sanguinis on lithium disilicate ceramic, under the influence of different solutions containing Fluorine. Forty lithium disilicate (IPS e.max Press Impulse) discs (2.5 × 5 mm) was divided into 4 groups (n = 10): artificial saliva (Group AS), 0.2% sodium fluoride (Group NaF), 1.23% acidulated phosphate fluoride gel (Group APF), and mouthwash (Group MW). Roughness analyses were performed before and after the immersion. The surface aspect was evaluated by scanning electron microscopy (SEM) and the adhesion of Streptococcus sanguinis were evaluated after immersion in the solutions. The data obtained were submitted to the analysis of variance (ANOVA) and the Tukey test (α = 0.05). The Group APF presented a bigger roughness (3.263), statistically different to the other solutions. The bacterial adhesion in the Group APF (5.85) presented statistical difference to the other solutions. The SEM micrographs showed a rougher surface in Group APF. The 1.23% APF gel promoted major surface roughness and bacterial adhesion and could be inadequate for the use of patients with lithium disilicate ceramic restorations. Clinical significance: The Fluorine solution can affect the lithium disilicate ceramics, generating a rough and non-esthetic surface. This altered surface could be susceptible to bacterial adhesion, being directly related with periodontal health, the longevity of the restoration and the success of the rehabilitation. View Full-Text
Keywords: ceramics; biofilms; fluoride; Acidulated Phosphate Fluoride; bacterial adhesion ceramics; biofilms; fluoride; Acidulated Phosphate Fluoride; bacterial adhesion

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Santos, D.M.; Silva, E.V.F.; Matos, A.O.; Monteiro, B.C.Z.; Medeiros, R.A.; Bitencourt, S.B.; Barão, V.A.R.; Rangel, E.C.; Goiato, M.C. Bacterial Adhesion on Lithium Disilicate Ceramic Surface Exposed to Different Hydrofluoric Solutions. Ceramics 2018, 1, 145-152.

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