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Influence of mouthwashes on the physical properties of orthodontic acrylic resin

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Influence of mouthwashes on the physical properties of orthodontic acrylic resin

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Título Influence of mouthwashes on the physical properties of orthodontic acrylic resin
Autor Collares, Fabrício Mezzomo
Rostirolla, Flávia Veronezi
Macedo, Érika de Oliveira Dias de
Leitune, Vicente Castelo Branco
Samuel, Susana Maria Werner
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.
Contido em Brazilian journal of oral sciences. Piracicaba. Vol. 13, no. 3 (July/Sept. 2014), p. 203-208
Assunto Materiais odontologicos
Ortodontia
Resinas acrilicas
[en] Acrylic resins
[en] Hardness
[en] Mouthwashes
Origem Nacional
Tipo Artigo de periódico
URI http://hdl.handle.net/10183/147118
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