Color improvement and surface integrity: Charcoal-based oral care products on stained resin composite.

This is the first study evaluating the effect of charcoal-based mouthwash when used with charcoal-based toothpaste on color change and surface roughness of a stained resin composite. Both toothpastes tested were effective in improving the color of the resin composite samples. While conventional toothpaste caused increased surface roughness, the charcoal-based toothpaste maintained surface integrity. However, charcoal-based toothpaste did not provide further color improvement when used in combination with the charcoal-based mouthwash and specifically led to increased surface roughness, highlighting potential implications for clinical practice.