Revista de Odontologia da UNESP
http://revodontolunesp.com.br/article/doi/10.1590/1807-2577.07618
Revista de Odontologia da UNESP
Original Article

O uso do gel de glicerina melhora a estabilidade de cor de resinas compostas?

Does the use of glycerin gel improve the color stability of composite resins?

Marcus Vinicius Loureiro BERTOLO; Mário Alexandre Coelho SINHORETI; Julia Puppin RONTANI; Pedro Paulo Albuquerque Cavalcanti de ALBUQUERQUE; Luis Felipe Jochims SCHNEIDER

Resumo

Resumo: Introdução: A camada superficial de resina composta não polimerizada, em função da presença do oxigênio, ocasiona problemas clínicos, como alteração de cor por absorção de pigmentos.

Objetivo: Determinar o efeito de diferentes técnicas usadas no controle da formação da camada de dispersão sobre as propriedades ópticas de uma resina composta comercial.

Material e método: Espécimes foram produzidos com a resina composta Estelite Sigma. A fotoativação foi conduzida com uma fonte de luz LED Bluephase G2 (1.200 mW/cm2 por 40 s). Os grupos foram determinados em função de três técnicas distintas: 1) sem tratamento (controle); 2) fotoativação com gel de glicerina; 3) polimento com lixa abrasiva após a fotoativação. A estabilidade de cor (ΔE) e o parâmetro de translucidez foram determinados pelo método de espectroscopia de reflectância (Easyshade Compac, Vita) empregando o parâmetro CIELab. As análises foram realizadas imediatamente após a fotoativação e repetidas após 7 dias de armazenamento em água ou em café. Os resultados foram submetidos à análise de variância e ao teste de Tukey (α = 0,05).

Resultado: Não houve diferença para ΔE nos grupos envelhecidos em água. Quando armazenados em café, o grupo controle apresentou o maior valor de ΔE, enquanto o grupo polido gerou a menor alteração de cor. A aplicação do gel de glicerina produziu resultados intermediários. O parâmetro de translucidez não foi afetado pelos tratamentos testados.

Conclusão: O uso do gel de glicerina minimiza a alteração de cor nas regiões de difícil acesso aos instrumentos de acabamento e de polimento.

Palavras-chave

Resinas compostas, materiais dentários, estabilidade de cor

Abstract

Abstract: Introduction: The resin composite superficial layer not polymerized due to the presence of oxygen leads to clinical problems as color alteration by the absorption of pigments.

Objective: Evaluate the effect of different techniques to control the formation of the composite resin dispersion layer on the optical properties of a commercial composite.

Material and method: Resin composite Estelite Sigma specimens were made. The specimens were light-cured with the LED Bluephase G2 device (1200 mW/cm2 - 40 s). The groups were determined according to three different techniques: 1) no treatment (control); 2) light-curing through a glycerin gel layer on the surface; 3) polishing with abrasive discs after light-curing. The color stability (ΔE) and the translucency parameter were determined by the spectroscopy method (Easyshade Compact Vita) as a function of the CIELab parameter. The analyzes were performed immediately after photoactivation and repeated after 7 days of storage in water or 7 days in coffee. The results were submitted to ANOVA and Tukey test (α = 0.05).

Result: No difference was found for ΔE in groups aged in water. When stored in coffee, the control group had the highest value of ΔE while the polished group generated the lowest color change. The glycerin gel groups promoted intermediated results. The translucency parameter was not affected by the treatments tested. Conclusion: The glycerin-based gel layer minimizes the color change in those regions that the finishing and polishing instruments are difficult to access.
 

Keywords

Resin composite, dental materials, color stability

References

Moon JD, Seon EM, Son SA, Jung KH, Kwon YH, Park JK. Effect of immersion into solutions at various pH on the color stability of composite resins with different shades. Restor Dent Endod. 2015 Nov;40(4):270-6. http://dx.doi.org/10.5395/rde.2015.40.4.270. PMid:26587412.

Bagheri R, Burrow MF, Tyas M. Influence of food-simulating solutions and surface finish on susceptibility to staining of aesthetic restorative materials. J Dent. 2005 May;33(5):389-98. http://dx.doi.org/10.1016/j.jdent.2004.10.018. PMid:15833394.

Guler AU, Yilmaz F, Kulunk T, Guler E, Kurt S. Effects of different drinks on stainability of resin composite provisional restorative materials. J Prosthet Dent. 2005 Aug;94(2):118-24. http://dx.doi.org/10.1016/j.prosdent.2005.05.004. PMid:16046965.

Um CM, Ruyter IE. Staining of resin-based veneering materials with coffee and tea. Quintessence Int. 1991 May;22(5):377-86. PMid:1924691.

Pruthi G, Jain V, Kandpal HC, Mathur VP, Shah N. Effect of bleaching on color change and surface topography of composite restorations. Int J Dent. 2010;2010:695748. http://dx.doi.org/10.1155/2010/695748. PMid:21234338.

Winter R. Visualizing the natural dentition. J Esthet Dent. 1993 May-Jun;5(3):102-17. http://dx.doi.org/10.1111/j.1708-8240.1993.tb00761.x. PMid:8268008.

Yu B, Lee YK. Influence of color parameters of resin composites on their translucency. Dent Mater. 2008 Sep;24(9):1236-42. http://dx.doi.org/10.1016/j.dental.2008.01.016. PMid:18374975.

Craig RG, Powers JM. Materiais dentários restauradores. 11. ed. São Paulo: Editora Santos; 2004.

Johnston WM, Ma T, Kienle BH. Translucency parameter of colorants for maxillofacial prostheses. Int J Prosthodont. 1995 Jan-Feb;8(1):79-86. PMid:7710631.

Shawkat ES, Shortall AC, Addison O, Palin WM. Oxygen inhibition and incremental layer bond strengths of resin composites. Dent Mater. 2009 Nov;25(11):1338-46. http://dx.doi.org/10.1016/j.dental.2009.06.003. PMid:19595445.

Pampulha I, Pitta-Lopes J, Chasqueira F, Portugal J, Arantes-Oliveira S. Inibição da polimerização de resinas compostas por materiais usados como materizes oclusais. Rev Port Estomatol Med Dent Cir Maxilofac. 2015 Jan-Mar;56(1):51-7. http://dx.doi.org/10.1016/j.rpemd.2014.12.001.

Venturini D, Cenci MS, Demarco FF, Camacho GB, Powers JM. Effect of polishing techniques and time on surface roughness, hardness and microleakage of resin composite restorations. Oper Dent. 2006 Jan-Feb;31(1):11-7. http://dx.doi.org/10.2341/04-155. PMid:16536188.

Park H-H, Lee I-B. Effect of glycerin on the surface hardness of composites after curing. J Kor Acad Cons Dent. 2011 Nov;36(6):483-9. http://dx.doi.org/10.5395/JKACD.2011.36.6.483.

Park SH, Krejci I, Lutz F. Hardness of celluloid strip-finished or polished composite surfaces with time. J Prosthet Dent. 2000 Jun;83(6):660-3. http://dx.doi.org/10.1067/mpr.2000.106874. PMid:10842135.

Bergmann P, Noack MJ, Roulet JF. Marginal adaptation with glass-ceramic inlays adhesively luted with glycerine gel. Quintessence Int. 1991 Sep;22(9):739-44. PMid:1946951.

Fontes ST, Fernández MR, de Moura CM, Meireles SS. Color stability of a nanofill composite: effect of different immersion media. J Appl Oral Sci. 2009 Sep-Oct;17(5):388-91. http://dx.doi.org/10.1590/S1678-77572009000500007. PMid:19936513.

Wilson NH, Burke FJ, Mjör IA. Reasons for placement and replacement of restorations of direct restorative materials by a selected group of practitioners in the United Kingdom. Quintessence Int. 1997 Apr;28(4):245-8. PMid:10332373.

Liberman R, Combe EC, Piddock V, Pawson C, Watts DC. Development and assessment of an objective method of colour change measurement for acrylic denture base resins. J Oral Rehabil. 1995 Jun;22(6):445-9. http://dx.doi.org/10.1111/j.1365-2842.1995.tb00799.x. PMid:7636615.

Ergücü Z, Türkün LS, Aladag A. Color stability of nanocomposites polished with one-step systems. Oper Dent. 2008 Jul-Aug;33(4):413-20. http://dx.doi.org/10.2341/07-107. PMid:18666499.

Ardu S, Gutemberg D, Krejci I, Feilzer AJ, Di Bella E, Dietschi D. Influence of water sorption on resin composite color and color variation amongst various composite brands with identical shade code: an in vitro evaluation. J Dent. 2011 Jul;39(Suppl 1):e37-44. http://dx.doi.org/10.1016/j.jdent.2011.06.010. PMid:21777649.

Bagheri R, Burrow MF, Tyas M. Influence of food-simulating solutions and surface finish on susceptibility to staining of aesthetic restorative materials. J Dent. 2005 May;33(5):389-98. http://dx.doi.org/10.1016/j.jdent.2004.10.018. PMid:15833394.

Barutcigil Ç, Yıldız M. Intrinsic and extrinsic discoloration of dimethacrylate and silorane based composites. J Dent. 2012 Jul;40(Suppl 1):e57-63. http://dx.doi.org/10.1016/j.jdent.2011.12.017. PMid:22239912.

de Alencar e Silva Leite ML, da Cunha Medeiros E Silva FD, Meireles SS, Duarte RM, Andrade AK. The effect of drinks on color stability and surface roughness of nanocomposites. Eur J Dent. 2014 Jul;8(3):330-6. http://dx.doi.org/10.4103/1305-7456.137640. PMid:25202212.

Kumari RV, Nagaraj H, Siddaraju K, Poluri RK. Evaluation of the effect of surface polishing, oral beverages and food colorants on color stability and surface roughness of nanocomposite resins. J Int Oral Health. 2015 Jul;7(7):63-70. PMid:26229373.

Jefferies SR. Abrasive finishing and polishing in restorative dentistry: a state-of-the-art review. Dent Clin North Am. 2007 Apr;51(2):379-97. http://dx.doi.org/10.1016/j.cden.2006.12.002. PMid: 17532918.
 

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