Silica is used in toothpaste production has long been friction and thickening agent. SiO2 refractive index of 1.46, when the liquid with the same refractive index, such as glycerol / sorbitol or a sorbitol / water mixture at the same time use, SiO2 particles become invisible, to become transparent suspension, so the industry used to produce SiO2 transparent toothpaste. In addition, because of its very fine silty, with a large surface area, so the smell of strong adsorption products. 

 Anhui Xinlei powder silicon material technology company is engaged in research and development, production and management, technical consulting, materials testing in the enterprise with advanced production technology powder, toothpaste spherical silica meet United States Pharmacopoeia, exports, and replace imported products. Specifications subject to international standards. The company has independent intellectual property rights of the patented technology, our products lead at home, spherical silica as a versatile active ingredient, can be tailored for different industries. Xinlei spherical nano-silica powder will make the most of our clients greatly benefit from, with many targeted silica products, but also according to customer's need to provide unique and innovative products and provide technical services. Use our toothpaste cleaning agents and rheology control agents friction ball high purity silica can reduce the cost of raw materials. 

 I rub toothpaste cleaning agents and rheology control agents of high purity spherical silica white, odorless, insoluble in water or acid, into a chemically inert, and fluoride toothpaste good compatibility with other materials, spherical silica according to customer requirements particle size can be controlled by the production conditions for different types of toothpaste, the introduction of spherical silica provide a good after toothpaste formulation pseudoplastic and thixotropic, thickening effect significant, long-term storage stability. Silica as a tooth cleaning toothpaste abrasives and strong, physical properties, chemical stability, and other ingredients in toothpaste paste good compatibility advantages. Especially low-abrasive, low refractive index of spherical transparent silica toothpaste and toothpaste for children. 

 Evaluation of spherical silica (SiO2) and calcium carbonate (CaCO3) abrasives of toothpaste on dentin. Methods: Light microscopy, scanning electron microscopy and dentine wear was detected by radioactivity (RDA), observe the SiO2 and CaCO3 toothpaste abrasives in vitro effects of dentin surface wear and dentin fluoride uptake and remineralization of dentin effects. Results: The use of toothpaste abrasives CaCO3 caused distinct dentin abrasion; SiO2 toothpaste RDA values were 98.61 and 86.17, and CaCO3 toothpaste RDA values were 222.85 and 253.84; corresponding friction agents also observed a sharp form of CaCO3 ; CaCO3 uptake of fluoride toothpaste as the dentin 7.28, SiO2 dentin fluoride uptake was 21.65; scanning electron microscope proved, SiO2 can significantly promote the remineralization of dentin. Conclusion: In vitro, CaCO3 toothpaste toothpaste more than SiO2 wear dentin.