Does glycerin influence the color stability of composite resin?

Authors

Keywords:

composite resin, coloring, agent, glycerin.

Abstract

Introduction: The effect of oxygen on the surface of resins at the moment of photopolymerization creates a layer which is susceptible to pigments. The use of glycerin may block this effect.

Objective: Determine whether there is a difference in the color stability of nanohybrid composite resin subjected to a coloring agent when glycerin is either applied or not applied.

Methods: Sixty resin disks were distributed into Group 1 (without glycerin) and Group 2 (with glycerin). Photopolymerization was performed for 20 s with a Bluephase®N LED lamp. The first color measurement was taken with an Easyshase®V spectrophotometer, recording the values obtained for L* (luminosity), a* (red-green axis) and b* (blue-yellow axis). The second color measurement was taken after immersion of the samples for one month in Coca-Cola®, maintaining them in an incubator at 37ºC. Statistical data analysis was performed with Student's t test to determine the color stability changes occurring in the two groups and compare them.

Results: Color stability changes were observed in all the resin samples. Mean distance between initial and final color was ΔE = 6.91 in Group 1 and ΔE = 3.74 in Group 2. A statistically significant difference was found between the two groups analyzed (p < 0.001).

Conclusions: Glycerin is an effective substance to block the effect of oxygen on the resin surface, preventing the formation of an oxygen-inhibited layer and raising the color stability of the nanohybrid composite resin.

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Published

2022-03-19

How to Cite

1.
Ramírez Fernández L, Colán Guzmán P del R, Valencia Heredia JJ, Guevara Canales JO, Morales Vadillo R. Does glycerin influence the color stability of composite resin?. Rev Cubana Estomatol [Internet]. 2022 Mar. 19 [cited 2025 Feb. 5];59(2):e3758. Available from: https://revestomatologia.sld.cu/index.php/est/article/view/3758

Issue

Vol. 59 No. 2 (2022): APR- JUN

Section

Research Article

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