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CC BY-NC-ND 4.0 · Eur J Dent 2012; 06(01): 024-033
DOI: 10.1055/s-0039-1698927
Original Article
Dental Investigation Society

Color and opacity of composites protected with surface sealants and submitted to artificial accelerated aging

Fabiano Gamero Aguilar
1   Department of Dental Materials and Prosthodontics, Dental School of Ribeirão Preto, University of São Paulo
,
Lucas da Fonseca Roberti Garcia
1   Department of Dental Materials and Prosthodontics, Dental School of Ribeirão Preto, University of São Paulo
,
Diogo Rodrigues Cruvinel
1   Department of Dental Materials and Prosthodontics, Dental School of Ribeirão Preto, University of São Paulo
,
Ana Beatriz Silva Sousa
2   Department of Dental Materials and Prosthodontics, Dental School of Ribeirão Preto, University of São Paulo
,
Fernanda de Carvalho Panzeri Pires-de-Souza
1   Department of Dental Materials and Prosthodontics, Dental School of Ribeirão Preto, University of São Paulo
› Author Affiliations
Further Information

Publication History

Publication Date:
30 September 2019 (online)

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ABSTRACT

Objectives: To evaluate the color similarity, stability and opacity of composites (TPH, Charisma, and Concept, shade A2) protected with surface sealants (Fortify Plus and Biscover) and cyanoacrylate (Super Bonder).

Methods: Forty specimens of each composite were made and separated into 4 groups (n=10) according to the surface protection: GI - without sealant; GII - cyanoacrylate; GIII - Fortify Plus; GIV - Biscover. Color and opacity readings were taken before and after Artificial Acelerated Aging (AAA) and the values obtained for color stability were submitted to statistical analysis by 2-way ANOVA and Bonferroni’s test (P<.05). The values acquired for color similarity were submitted to 1-way ANOVA and Tukey’s test (P<.05). The specimen sufaces were compared before and after AAA using Scanning Electronic Microscopy (SEM).

Results: Studied composites did not present the same values for the coordinates L*, a* and b * before AAA, indicating that there was no color similarity among them. All composites presented color alteration after AAA with clinically unacceptable values. Protected groups presented lower opacity variation after AAA, in comparison with the control goup. SEM evaluation demonstrated that AAA increased the surface irregularities in all of the studied groups.

Conclusion: Surface sealants were not effective in maintaining composite color, but were able to maintain opacity. (Eur J Dent 2012;6:24-33)

Key words

Accelerated aging - color stability - composite - sealant
 

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