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Color stability of a nanofill composite: effect of different immersion media
Fontes, Silvia Terra; Fernández, María Raquel; Meireles, Sônia Saeger.
  • Fontes, Silvia Terra; Federal University of Pelotas. Dental School. Department of Operative Dentistry. Pelotas. BR
  • Fernández, María Raquel; Federal University of Pelotas. Dental School. Department of Operative Dentistry. Pelotas. BR
  • Meireles, Sônia Saeger; Federal University of Paraíba. Department of Operative Dentistry. João Pessoa. BR
J. appl. oral sci ; 17(5): 388-391, Sept.-Oct. 2009. tab
Article in English | LILACS | ID: lil-531384
ABSTRACT

OBJECTIVE:

The aim of this in vitro study was to evaluate the color stability of a nanofill composite resin (Filtek Z350) in different immersion media. MATERIALS AND

METHODS:

Twelve resin-based composite specimens were prepared using a silicon cylindrical mold measuring ≅1mm of thickness and ≅ 10mm of diameter. Specimens were light-cured for 40 s from both sides using a LED Radii at 1400 mW/cm² and were randomized into 4 groups (n= 3) according to immersion media coffee, yerba mate, grape juice or water (control solution). A digital spectrophotometer was used to evaluate the color changes at baseline and at 1-week after immersion in each solution. Specimens were stored in the different staining media for 4 h/day during 1 week. The color differences (DE) were analyzed by paired t-test and one-way ANOVA with complementary Tukey test (p<0.05).

RESULTS:

After 1-week of immersion, a perceptive color change for the group stored in the grape juice compared to baseline (p=0.008) was observed. Coffee and yerba mate did not show any color changes visible for the human eyes or significantly different from the control group (p>0.05)

CONCLUSIONS:

The findings of the present study suggest that the tested nanofill resin-based composite was susceptible to staining by substances present in the grape juice.
Subject(s)

Full text: Available Index: LILACS (Americas) Main subject: Composite Resins / Dental Materials / Coloring Agents / Nanocomposites Type of study: Controlled clinical trial Limits: Humans Language: English Journal: J. appl. oral sci Journal subject: Dentistry Year: 2009 Type: Article Affiliation country: Brazil Institution/Affiliation country: Federal University of Paraíba/BR / Federal University of Pelotas/BR

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Full text: Available Index: LILACS (Americas) Main subject: Composite Resins / Dental Materials / Coloring Agents / Nanocomposites Type of study: Controlled clinical trial Limits: Humans Language: English Journal: J. appl. oral sci Journal subject: Dentistry Year: 2009 Type: Article Affiliation country: Brazil Institution/Affiliation country: Federal University of Paraíba/BR / Federal University of Pelotas/BR