Effect of light curing unit and antiseptic mouthwashes on the physical properties of gingiva-colored composite resin


  • Tatiane Cristina Dotta Universidade de São Paulo
  • Leonardo de Pádua Andrade Almeida Universidade de São Paulo
  • Mayara Manfrin Arnez Universidade de São Paulo
  • Raisa Castelo Universidade de São Paulo
  • David Emanuel Ugarte University National of Concepción
  • Andréa Cândido dos Reis Universidade de São Paulo
  • Alma Blasida Concepcion Elizaur Benitez Catirse Universidade de São Paulo




Composite resins, Light curing, Mouthwashes


Objective: This study evaluated surface roughness (Ra) and color difference (ΔE00) of a gingiva-colored composite resin (NT Premium Gengiva, Coltene), light-activated with three light curing units (LCU) and immersed in different mouthwash solutions. Methods: 90 composite specimens (n=10) were divided according to the LCU: L1-Valo, L2-Bluephase and L3-Optilight Max; and solution: S1-alcohol-based antiseptic mouthwash (Listerine Cool Mint), S2-alcohol-free antiseptic mouthwash (Listerine Cool Mint Zero Alcohol) and S3-water (control). Immersions were performed for 30 s, 2x/day, for 21 days. Ra and coordinates of luminosity (L*) and color (a* and b*) were measured using a rugosimeter (SJ-201 P/M) and a spectrophotometer (SP62S), respectively, at: T0-start, T1-7 days, T2-14 days and T3-21 days. Results: L1 (1.3±0.9) presented higher Ra than L3 (0.7±0.6) and L2 (1.0±0.8); and Ra for S2 (0.9±0.1) was greater than S3 (-0.1±0.1), and S1 (0.1±0.1). Moreover, L1 (23.3±0.3) presented lower ΔE00 t han L 2 (24.7±0.3) a nd L 3 (25.1±0.3). Conclusion: Ra of the gingiva-colored composite resin tested increased when L1 and S2 were used, although L1-cured specimens also showed the lowest ΔE00.


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Author Biographies

Tatiane Cristina Dotta, Universidade de São Paulo

Department of Dental Materials and Prosthodontics, School of Dentistry, University of São Paulo (USP), Ribeirão Preto, SP, Brazil

Leonardo de Pádua Andrade Almeida, Universidade de São Paulo

Department of Dental Materials and Prosthodontics, School of Dentistry, University of São Paulo (USP), Ribeirão Preto, SP, Brazil

Mayara Manfrin Arnez, Universidade de São Paulo

Department of Dental Materials and Prosthodontics, School of Dentistry, University of São Paulo (USP), Ribeirão Preto, SP, Brazil

Raisa Castelo, Universidade de São Paulo

Department of Dental Materials and Prosthodontics, School of Dentistry, University of São Paulo (USP), Ribeirão Preto, SP, Brazil

David Emanuel Ugarte, University National of Concepción

Department of Rehabilitation, University National of Concepción, School of Dentistry, Concepción, Paraguay.

Andréa Cândido dos Reis, Universidade de São Paulo

Department of Dental Materials and Prosthodontics, School of Dentistry, University of São Paulo (USP), Ribeirão Preto, SP, Brazil

Alma Blasida Concepcion Elizaur Benitez Catirse, Universidade de São Paulo

Department of Dental Materials and Prosthodontics, School of Dentistry, University of São Paulo (USP), Ribeirão Preto, SP, Brazil


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