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CC BY-NC-ND 4.0 · Eur J Dent 2010; 04(01): 006-011
DOI: 10.1055/s-0039-1697801
Original Article
European Journal of Dentistry

Composites Associated with Pulp-Protection Material: Color-Stability Analysis after Accelerated Artificial Aging

Diogo Rodrigues Cruvinel
a   Ribeirao Preto School of Dentistry, University of São Paulo, Ribeirao Preto, SP, Brazil
,
Lucas da Fonseca Roberti Garcia
b   Piracicaba School of Dentistry, State University of Campinas, Piracicaba, SP, Brazil
,
Simonides Consani
c   Piracicaba School of Dentistry, State University of Campinas, Piracicaba, SP, Brazil
,
Fernanda de Carvalho Panzeri Pires-de-Souza
d   Ribeirao Preto School of Dentistry, University of São Paulo, Ribeirao Preto, SP, Brazil
› Author Affiliations
Further Information

Publication History

Publication Date:
30 September 2019 (online)

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ABSTRACT

Objectives: This study assessed the color stability of two composites associated with two pulp protectors submitted to accelerated artificial aging (AAA).

Methods: 60 test specimens were made with 0.5 mm of protection material (calcium hydroxide - CH or glass ionomer cement - GIC) and 2.5 mm of restoration material (Concept or QuixFil) and divided into 3 groups (n=10) according to the type of protection material/composite, and the control group (no protection). After polishing, color readings were obtained with a spectrophotometer (PCB 6807 Byk Gardner) before and after AAA for 384 hours, and L*, a*, and b* coordinates and total color variation (ΔE) were analyzed (2-way ANOVA, Bonferroni, α=05).

Results: Composites placed on CH presented lower L* levels than those on GIC, which presented higher L* values than the control group and lower b* values than those of the CH group. The Concept composite presented higher ΔE levels for all groups, differing statistically from QuixFil, except when placed on GIC.

Conclusions: It was concluded that the protection material could affect the color stability and AAA is a factor that enhances this effect, depending on the type of composite used. (Eur J Dent 2010;4:6-11)

Key words

Color stability - Composites - Pulp protection - Accelerated artificial aging
 

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