Composite friction agent with surface uniformly coated with silver-loaded nano-hydroxyapatite as well as preparation method and application of composite friction agent

• Main Authors: HUANG ZHIYUAN, KONG JIANGHUA, CHENG JIANG
• Format: Patent
• Language: Chinese; English
• Published: 28.05.2024
• Subjects: HUMAN NECESSITIES; HYGIENE; MEDICAL OR VETERINARY SCIENCE; PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES; SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS ORMEDICINAL PREPARATIONS; SPECIFIC USE OF COSMETICS OR SIMILAR TOILETPREPARATIONS

The invention discloses a composite friction agent with the surface evenly coated with silver-loaded nano-hydroxyapatite and a preparation method and application of the composite friction agent. According to the composite friction agent, silicon dioxide serves as a core, polydopamine evenly coating the surface of the silicon dioxide serves as a middle layer, and the middle layer is evenly coated with silver-loaded nano-hydroxyapatite; the D25 particle size of the composite abrasive is less than 3 microns, the D50 particle size is 3-6.5 microns, and the D90 particle size is less than 8.5 microns. The silver-loaded nano-hydroxyapatite is uniformly coated on the surface of the silicon dioxide, and the particle size of the composite abrasive is controlled, so that the affinity with dentin is enhanced, and the problems that the silicon dioxide is easy to fall off when being used for sealing dentinal tubules and the nano-hydroxyapatite and nano-silver are easy to agglomerate in the toothpaste are solved; and meanwh