Color stability of chemically activated reline resin after microwave disinfection: A 1-year clinical trial

Autor(es)

Ribeiro, Roberta Chuqui ^[1] ; Giampaolo, Eunice Teresinha ^[1] ; Izumida, Fernanda Emiko ^[1] ; Pavarina, Ana Claudia ^[1] ; Moffa, Eduardo Buozi ^[1] ; Vergani, Carlos Eduardo ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista, Araraquara Dent Sch, UNESP, Dept Dent Mat & Prosthodont, BR-14801903 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: AMERICAN JOURNAL OF DENTISTRY; v. 24, n. 4, p. 200-204, AUG 2011.
• Citações Web of Science: 2

Resumo

Purpose: To evaluate the effect of microwave disinfection on the color stability of a hard chairside reline resin after a 1-year service period. Methods: 40 adult patients aged between 30-75 years, who required denture reline treatment, participated in this study. Tokuyama Rebase 11 was used to reline complete maxillary dentures. The edentulous subjects were randomly divided into two groups (n=20) and dentures were cleansed according to two methods: CO (control group) - brushing with coconut soap and soft toothbrush; DG (disinfection group) - brushing according to previous methods and microwave disinfection once a week for 3 minutes at 650W. Color parameters in L{*}a{*}b{*} were recorded by spectrophotometer immediately after the reline, at 7 and 15 days, 1, 3, 6 and 9 months and 1 year post-placement. Data were analyzed by two-way repeated-measures ANOVA and Tukey tests (alpha= 0.05). Results: Color alteration values of DG were significantly lower than those of CO (P< 0.05). Color changes observed after 15 days were greater than values obtained at 7 days recall (P< 0.05). All color changes observed for the CO were considered noticeable (between 1.5 and 3.0 NBS). In DG, color change was slight (between 0.5 and 1.5 NBS). There were statistically significant differences between L{*} values obtained initially and after 3 months, between 15 days and 3 months and between 15 days and 1 year (P< 0.05). No significant differences were observed between group and time for the parameters a{*} and b{*}. (Am J Dent 2011;24:200-204). (AU)

• Processo FAPESP: 05/04693-4 - 1. Avaliação clínica da alteração dimensional de próteses totais submetidas à desinfecção por microondas; 2. Efeito do tempo e do método de desinfecção no desempenho clínico e na quantificação de microrganismos de um reembasador rígido
• Beneficiário: Eunice Teresinha Giampaolo
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 05/02194-0 - Efeito do tempo e do metodo de desinfeccao no desempenho clinico e na quantificacao de microorganismos de um reembasador rigido.
• Beneficiário: Roberta Chuqui
• Modalidade de apoio: Bolsas no Brasil - Doutorado