Toothpaste is improved on the basis of tooth powder. Early tooth powder mainly used calcium carbonate as abrasive and soap as surfactant.
Since the 1940s, due to the rapid development of science and technology, the toothpaste industry has been greatly improved. On the one hand, the development and application of new abrasives, wetting agents, thickeners and surfactants have continuously upgraded the quality of toothpaste products.
On the other hand, toothpaste has also developed from ordinary tooth cleaning function to adding drugs to become oral hygiene products for preventing and treating dental diseases, the most prominent of which is fluoride toothpaste, which greatly reduces the incidence of dental caries.
From 65438 to 0945, stannous fluoride was added to toothpaste with calcium pyrophosphate as abrasive and tin pyrophosphate as stabilizer in the United States, and the world's first fluoride toothpaste was developed.
Extended data:
Classification of toothpaste:
Toothpaste is a complex mixture. It consists of liquid phase and solid phase. In order to suspend solid particles in the liquid phase for a long time, it is necessary to add appropriate adhesives, spices and sweeteners to improve the taste, and also add detergents to foam and clean.
Therefore, toothpaste used to be divided into abrasive type (calcium carbonate type, calcium hydrogen phosphate type), pH type (acidic, moderately alkaline), detergent type (soap type, synthetic detergent type), fragrance type (mint, fruit type) and so on.
Reference source: Baidu Encyclopedia-Toothpaste