LION Check-Up Root Care Alpha Gel Toothpaste Mild Mint 90g A toothpaste recommended for mouths with exposed tooth roots. Fluoride helps prevent cavities in both enamel and dentin, while the coating agent PCA (pyrrolidone carboxylic acid) coats the collagen on the surface of exposed dentin. This non-abrasive gel type is gentle on dentin, with a clear blue color that is easy for seniors to see. It produces little foam and has a mild flavor, making it easy to rinse with a small amount of water.