Effect of different solutions on color stability of acrylic resin-based dentures

Autor(es)

Goiato, Marcelo Coelho ^[1] ; Nobrega, Adhara Smith ^[1] ; dos Santos, Daniela Micheline ^[1] ; Andreotti, Agda Marobo ^[1] ; Moreno, Amalia ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista ESP, Dept Dent Mat & Prosthodont, Aracatuba Dent Sch, Aracatuba, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Brazilian Oral Research; v. 28, n. 2, p. 151-157, MAR-APR 2014.
• Citações Web of Science: 5

Resumo

The aim of this study was to evaluate the effect of thermocycling and immersion in mouthwash or beverage solutions on the color stability of four different acrylic resin-based dentures (Onda Cryl, OC; QC20, QC; Classico, CL; and Lucitone, LU). The factors evaluated were type of acrylic resin, immersion time, and solution (mouthwash or beverage). A total of 224 denture samples were fabricated. For each type of resin, eight samples were immersed in mouthwashes (Plax-Colgate, PC; Listerine, LI; and Oral-B, OB), beverages (coffee, CP; cola, C; and wine, W), and artificial saliva (AS; control). The color change (SE) was evaluated before (baseline) and after thermocycling (T,), and after immersion in solution for 1 h (T-2), 3 h (T-3), 24 h (T-4), 48 h (T-5), and 96 h (T-6). The CIE Lab system was used to determine the color changes. The thermocycling test was performed for 5000 cycles. Data were submitted to three-way repeated-measures analysis of variance and Tukey's test (p < 0.05). When the samples were immersed in each mouthwash, all assessed factors, associated or not, significantly influenced the color change values, except there was no association between the mouthwash and acrylic resin. Similarly, when the samples were immersed in each beverage, all studied factors influenced the color change values. In general, regardless of the solution, LU exhibited the greatest SE values in the period from T-1 to T-5; and QC presented the greatest SE values at T-6. Thus, thermocycling and immersion in the various solutions influenced the color stability of acrylic resins and QC showed the greatest color alteration. (AU)

• Processo FAPESP: 10/16962-8 - Efeito de soluções corantes na estabilidade de cor de resinas acrílicas para base de prótese total
• Beneficiário: Adhara Smith Nobrega
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica