Color stability and degree of conversion of gingiva-colored resin-based composites
Metadatos
Mostrar el registro completo del ítemAutor
Benavides Reyes, Cristina; Pérez Gómez, María Del Mar; Tejada Casado, María de la Nativida; Ruiz López, Javier; Lucena Martín, CristinaEditorial
Wyley
Materia
CIEDE2000 Color stability Degree of conversion Gingiva color thresholds Gingiva-colored resin-based composite
Fecha
2023-07-05Referencia bibliográfica
Benavides‐Reyes, C., Pérez, M. M., Tejada‐Casado, M., Ruiz‐López, J., & Lucena, C. (2023). Color stability and degree of conversion of gingiva‐colored resin‐based composites. Journal of Esthetic and Restorative Dentistry[DOI: 10.1111/jerd.13082]
Patrocinador
Junta de Andalucía, Grant/Award Number: P20-00200; Universidad de Granada; Grant/Award Number: CBUAResumen
Objectives: To evaluate gingiva-colored resin-based composites' (GCRBC) color stability
and degree of conversion (DC%).
Methods: Eight discs (8 1 mm) of 20 shades of GCRBC were prepared. Color coordinates
were measured against a gray background with a calibrated spectroradiometer,
CIE D65 illuminant and the CIE 45 /0 geometry at baseline and after
30 days of storage in distilled water, coffee, and red wine. Color differences (ΔE00)
between final and baseline conditions were calculated. An ATR-FTIR spectrometer
with a diamond tip was used to calculate DC%. The results were analyzed statistically
using ANOVA and Tukey post-hoc test. The level of significance was p < 0.05.
Results: DC% and color stability correlated with each other and with the GCRBC
brand. DC% ranged between 43% and 96%, highest values correspond to flowable
composites. All composites have experienced color changes after immersion in water,
wine and coffee. However, the magnitude of the color change has varied widely
depending on the immersion medium and the GCRBC. Color changes generated by
the wine were, globally, greater than those induced by coffee (p < 0.001) and above
the acceptability thresholds.
Conclusions: The DC% of GCRBCs is sufficient to achieve adequate biocompatibility
and physicomechanical properties, but the high susceptibility to staining could compromise
aesthetic long-term results.
Clinical Significance: The degree of conversion and the color stability of gingivacolored
resin-based composites correlated with each other. All composites have
experienced color changes after immersion in water, wine and coffee. Color changes
generated by wine were, globally, greater than those induced by coffee and above
the acceptability thresholds that could compromise aesthetic long-term results.
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