Influence of mouthwashes on the physical properties of orthodontic acrylic resin

Authors

  • Fabrício Mezzomo Collares Universidade Federal do Rio Grande do Sul – UFRS
  • Flavia Veronezi Rostirolla Universidade Federal do Rio Grande do Sul – UFRS
  • Érika de Oliveira Dias de Macêdo Universidade Federal do Rio Grande do Sul – UFRS
  • Vicente Castelo Branco Leitune Universidade Federal do Rio Grande do Sul – UFRS
  • Susana Maria Werner Samuel Universidade Federal do Rio Grande do Sul – UFRS

DOI:

https://doi.org/10.20396/bjos.v13i3.8640888

Keywords:

Acrylic resins, Mouthwashes, Hardness

Abstract

Aim: The aim of this study was to evaluate the influence of acrylic resin immersion in different mouthwashes on hardness, roughness and color. Methods: Specimens of an orthodontic selfcured acrylic resin (Orto Clas®) were produced and immersed in five mouthwashes: Plax® Classic (Colgate®); Plax® alcohol-free (Colgate®); Listerine® (Johnson & Johnson®); Periogard® (Colgate®) and Periogard® alcohol-free (Colgate®). Nine different immersion times were studied: 1, 2, 4, 6, 8, 10, 12, 24 h and 7 days, totalizing 45 groups. The specimens were evaluated before and after immersion by Knoop microhardness (n=5), roughness in Ra parameter (n=5), and colorimetric analysis, CIElab (n=3). Results: All mouthwashes softened the acrylic resins after 7 days of immersion. PlaxÒ alcohol-free showed no statistically significant difference of softening between the immersion times. Listerine® showed softening after immersion at all times. Plax® alcohol-free and Listerine® showed significantly increased values of roughness after 12 h of immersion (p<0.05). Listerine® presented a significant increase in color variation after 12 h of immersion. Conclusions: Immersion in mouthwashes could influence acrylic resin hardness, roughness and color.

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Author Biographies

Fabrício Mezzomo Collares, Universidade Federal do Rio Grande do Sul – UFRS

Universidade Federal do Rio Grande do Sul – UFRS, School of Dentistry, Area of Dental Materials, Porto Alegre, RS.

Flavia Veronezi Rostirolla, Universidade Federal do Rio Grande do Sul – UFRS

Universidade Federal do Rio Grande do Sul – UFRS, School of Dentistry, Area of Dental Materials, Porto Alegre, RS.

Érika de Oliveira Dias de Macêdo, Universidade Federal do Rio Grande do Sul – UFRS

Universidade Federal do Rio Grande do Sul – UFRS, School of Dentistry, Area of Dental Materials, Porto Alegre, RS.

Vicente Castelo Branco Leitune, Universidade Federal do Rio Grande do Sul – UFRS

Universidade Federal do Rio Grande do Sul – UFRS, School of Dentistry, Area of Dental Materials, Porto Alegre, RS.

Susana Maria Werner Samuel, Universidade Federal do Rio Grande do Sul – UFRS

Universidade Federal do Rio Grande do Sul – UFRS, School of Dentistry, Area of Dental Materials, Porto Alegre, RS.

Published

2010-12-30

How to Cite

1.
Collares FM, Rostirolla FV, Macêdo Érika de OD de, Leitune VCB, Samuel SMW. Influence of mouthwashes on the physical properties of orthodontic acrylic resin. Braz. J. Oral Sci. [Internet]. 2010 Dec. 30 [cited 2022 Oct. 6];13(3):203-8. Available from: https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8640888

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