GD571 - Invasive cervical resorption: clinical management of necrotic pulp-GD571 Article

GD571 Article

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This in vitro study compared the color, translucency, and coffee-staining susceptibility of two single-shade composite resins (Omnichroma and Vittra APS Unique) with their conventional counterparts (Palfique and Vittra APS). Researchers prepared 48 specimens and measured color and translucency at baseline and after seven days in coffee solution.<br /><br />Coffee exposure darkened all materials and increased their redness and yellowness. Overall color change did not differ significantly among the four composites, indicating similar staining susceptibility; however, changes exceeded established perceptibility and acceptability thresholds. The single-shade materials generally remained brighter and less red or yellow than the conventional composites. Omnichroma had greater initial translucency than Palfique, and after staining both single-shade composites were more translucent than the conventional materials. Vittra APS was the only material with a significant decrease in translucency after staining.<br /><br />The findings suggest that single-shade composites can offer greater luminosity and translucency without greater overall color change than their conventional counterparts. Because this was a laboratory study using a controlled staining protocol, clinical performance may differ; further research should include oral conditions such as saliva, brushing, and repolishing.

Keywords

single-shade composites

color stability

translucency

coffee staining

in vitro study

Omnichroma

Vittra APS Unique

Palfique

Vittra APS

dental composite resins