Dental material preparation method utilizing osteoid nano particle for compound modification

Abstract

The invention relates to a dental material preparation method utilizing osteoid nano particle for compound modification, belonging to the field of dentistry preparation. The invention aims at solving the problem that the current dental compound resin material used for filling tooth cavity needs to be further improved in wear-resisting property and toughness. The method of the invention includes: silane coupling agent is utilized for surface modification on nano inorganic powder, the modified nano inorganic powder is evenly mixed with materials of bisphenol A glycidyl methacrylate monomer, TEGDMA diluent, camphorquinone light trigger, dimethylamino ethyl methacrylate coinitator and the like under the condition of keeping out of the sun, and bubbles are excluded under vacuum. The key point of the invention lies in that the nano inorganic powder contains platy hydroxylapatite accounting for 10-80% of self weight percentage. The contained platy hydroxylapatite contributes to improving the wear-resisting property and the toughness of the material.

Description

technical field [0001] The invention relates to a preparation method of a dental material which is compounded and modified by using osteoid nanoparticles, and belongs to the field of A61K medical and dental preparations. Background technique [0002] In the existing commercially available single-paste light-cured dental composite resin materials for caries filling, the inorganic filler components added to increase the strength and wear resistance mostly use amorphous particles, and the amorphous particles are contained in the composite resin. It can play a role similar to spherical particles. On the surface layer of the dental composite resin cured by polymerization, the bonding surface between the amorphous particles and the resin matrix is ​​small, and the anchoring force is therefore weak, and it is easy to peel off during the friction process. This factor compromises the role of amorphous particles in improving the wear resistance of dental composite resins. On the other...

AI Technical Summary

Problems solved by technology

[0002] In the existing commercially available single-paste light-cured dental composite resin materials for caries filling, the inorganic filler components added to increase the strength and wear resistance mostly use amorphous particles, and the amorphous particles are contained in the composite resin. It can play a role similar to spherical particles. On the surface layer of the dental composite resin cured by polymerization, the bonding surface between the amorphous particles and the resin matrix is ​​small, and the anchoring force is therefore weak, and it is easy to peel off during the friction process. This factor compromises the role of amorphous particles in improving the wear resistance of dental composite resins. On the other hand, in the body of dental composite resins after curing, the contribution of amorphous particles to the strengthening and toughening of dental composite resins is also due to There are some deficiencies due to not fully taking into account the pull-out toughening mechanism

[0003] In order to make full use of the pull-out toughening mechanism to strengthen dental composite resins for dental caries, in recent years, glass fibers with high aspect ratios, silicon carbide whiskers, silicon nitride whiskers, and aluminum borate whiskers have been used as worthy candidates. The inorganic fillers considered have attracted the attention of some researchers. Undoubtedly, if this kind of inorganic fillers with a high aspect ratio can be uniformly mixed into the resin, it will provide a positive assistance to the strengthening and toughening of dental composite resins for caries filling. However, glass fibers with a high aspect ratio, silicon carbide whiskers, silicon nitride whiskers, and aluminum borate whiskers are difficult to mix evenly into the caries-filling resin matrix due to their inherent physical appearance, in other words In other words, uniform mixing becomes an insurmountable obstacle. This factor makes inorganic materials such as glass fiber, silicon carbide whiskers, silicon nitride whiskers, and aluminum borate whiskers with high aspect ratios used in dental composite resins for caries filling. The application in the