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ORIGINAL ARTICLE
Year : 2016  |  Volume : 5  |  Issue : 3  |  Page : 111-114

Surface roughness of restorative materials after immersion in mouthwashes


1 Department of Prosthodontics, School of Dentistry; Department of Dental Materials and Prosthodontics, Ribeirão Preto School of Dentistry, University of São Paulo, São Paulo Brazil
2 Department of Dental Materials and Prosthodontics, Ribeirão Preto School of Dentistry, University of São Paulo; Department of Prosthodontics, School of Dentistry, University Center Hermínio Ometto, São Paulo, Brazil
3 Department of Dentistry, McGill University, Montreal, Canada
4 Department of Prosthodontics, School of Dentistry, University of São Paulo, São Paulo Brazil
5 Department of Dental Materials and Prosthodontics, Ribeirão Preto School of Dentistry, University of São Paulo, São Paulo Brazil

Correspondence Address:
Alma Blasida Concepcion Elizaur Benitez Catirse
Department of Dental Materials and Prosthodontics, Ribeirão Preto School of Dentistry, University of São Paulo Avenida do Café, s/n 14040-904 Ribeirão Preto, SP, Brasil

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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/2278-9626.189255

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Objective: To evaluate the surface roughness of resin composite and ceramic material after immersion in mouthwashes. Methodology: Thirty specimens of resin composite and ceramic material were prepared with a stainless steel matrix (6 mm × 2 mm). The samples of each material were divided into three groups (n = 10), according to the mouthwashes: Distilled water (DW), chlorhexidine (CL) 0.12%, and cetylpyridinium chloride (CC). Specimens were individually submitted to the immersion cycle in 15 mL of mouthwash for 30 days, three times per day, for 1 min/cycle. Surface roughness measurements were performed at three different time intervals: Before the first cycle (T0), after 7 (T1), and 30 days (T2) of immersion. Data were analyzed by the two-way ANOVA and Tukey tests (P ≤ 0.05). Results: There was no statistically significant difference in surface roughness of resin composite among mouthwashes (DW - 1.4 ± 0.13 μm; CL - 1.16 ± 0.13 μm; CC - 1.18 ± 0.13 μm). Surface roughness was statistically significantly lower after 30 days (T2-0.56 ± 0.60 μm) compared with the initial period (T0-1.63 ± 0.60 μm) and after 7 days (T1-1.57 ± 0.60 μm). For ceramic material, CC (3.75 ± 0.60 μm) caused a higher level of surface roughness compared with DW (2.57 ± 0.60 μm) and CL (3.39 ± 0.60 μm). There was no statistically significant difference among the different time intervals (T0-3.05 ± 0.18 μm; T1-3.41 ± 0.18 μm; T2-3.26 ± 0.18 μm). Conclusion: Mouthwashes did not promote a significant change in surface roughness of composite resin. Cetylpyridinium chloride promoted an increase in surface roughness of dental ceramic.


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