A paste is a mixture where the solvent is semi-solid. Toothpaste consists of:
1. Mild abrasives to remove debris and residual surface stains. Examples include calcium carbonate, dehydrated silica gels, hydrated aluminum oxides, magnesium carbonate, phosphate salts, and silicates.
2. Fluoride to strengthen tooth enamel and remineralize tooth decay. All ADA - accepted toothpaste contains fluoride.
3. Humectants to prevent water loss in the toothpaste. Examples include glycerol, propylene, glycol, and sorbitol.
4. Flavoring agents, such as saccharin and other sweeteners to provide taste. Flavoring agents do not promote tooth decay. (No ADA - accepted toothpaste contains sugar or any other ingredient that would promote tooth decay).
5. Thickening agents or binders to stabilize the toothpaste formula. They include mineral colloids, natural gums, seaweed colloids or synthetic cellulose.
6. Detergents to create foaming action. They include sodium lauryl sulfate, sodium N-Lauryl sarcosinate.
Plasma is ionized gas that has been energized to the point that some of the electrons break free from, but travel with, their nucleus. Gases can become plasmas in several ways, but all include pumping the gas with energy. A spark in a gas will create a plasma.