Influence of NaHCO3 Powder on Translucency of Microfilled Composite Resin Immersed in Different Mouthrinses

Autor(es)

Colucci, Vivian ^[1] ; Dos Santos, Camila Demetrio ^[1] ; Botelho Do Amaral, Flavia Lucisano ^[1] ; Milori Corona, Silmara Aparecida ^[1] ; Elizaur Benitez Catirse, Alma Blasida Concepcion ^[2]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Dept Operat Dent, Ribeirao Preto Sch Dent, BR-14040904 Ribeirao Preto, SP - Brazil

^[2] Univ Sao Paulo, Dept Mat Dent & Protese, Fac Odontol Ribeirao Preto, Ribeirao Preto Sch Dent, BR-14040904 Ribeirao Preto, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of Esthetic and Restorative Dentistry; v. 21, n. 4, p. 242-248, 2009.
• Citações Web of Science: 10

Resumo

The regular use of mouthrinses, particularly when combined with the use of air-powder polishing, could affect the appearance of tooth-colored restorations. The current study sought to evaluate the effect of NaHCO(3) powder on translucency of a microfilled composite resin immersed in different mouthrinses, at distinct evaluation periods. Eighty disk-shaped specimens of composite resin (Durafill VS, Heraeus Kulzer GmbH \& Co. KG, Hanau, Germany) were prepared. The composite specimens were then randomly allocated into two groups according to the surface treatment: exposure to NaHCO(3) powder (10 seconds) or nonexposure, and they were randomly assigned into four subgroups, according to the mouthrinses employed (N = 10): Periogard (Colgate/Palmolive, Sao Bernardo do Campo, SP, Brazil), Cepacol (Aventis Pharma, Sao Paulo, SP, Brazil), Plax (Colgate/Palmolive), and distilled water (control group). The samples were immersed for 2 minutes daily, 5 days per week, over a 4-month test period. Translucency was measured with a transmission densitometer at seven evaluation periods. Statistical analyses (analysis of variance and Tukey's test) revealed that: distilled water presented higher translucency values (86.72%); Periogard demonstrated the lowest translucency values (72.70%); and Plax (74.05%) and Cepacol (73.32%) showed intermediate translucency values, which were statistically similar between them (p > 0.01). NaHCO(3) air-powder polishing increased the changes in translucency associated with the mouthrinses. Air-powder polishing alone had no effect on material translucency. Translucency percent was gradually decreased from 1 week of immersion up to 4 months. It may be concluded that the NaHCO(3) powder and the tested mouthrinses have affected the translucency of microfilled composite resin, according to the tested time. CLINICAL SIGNIFICANCE During the last decade, the demand for composite resin restorations has grown considerably, however, controversy persists regarding the effect of surface roughness on color stability. (AU)

• Processo FAPESP: 03/07210-9 - Influencia do jato de bicarbonato de sodio na translucidez de resinas compostas imersas em solucoes anti-septicas.
• Beneficiário: Vivian Colucci
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica