Xinxiang Hui'er Ceramics Co., Ltd

　　Oral implant ceramic materials refer to bioceramic materials that are implanted into the hard tissues of the oral and maxillofacial regions to replace natural teeth, bone tissue defects, and deformity correction, in order to restore physiological appearance and function. According to the properties of bioceramic materials and the types of reactions they cause in body tissues, oral ceramic implant materials can be divided into three categories: biologically inert ceramics, biologically reactive ceramics, and biologically absorbable ceramics. Its performance should have high biological safety and reactivity, stable chemical properties, invariance after disinfection and sterilization, no residual disinfectant substances, physical and mechanical properties and processing formability that meet clinical requirements, and rich sources, simple production processes, low costs, in order to have practical value for clinical application and promotion. After implanting bioactive ceramics into body tissues, they form a bony interface with bone tissue, and there is no fibrous tissue membrane in the interface area; After the implantation of biologically inert ceramic fibers, a fiber contact interface is formed; The bone interface formed by bioabsorbable ceramics exhibits new bone formation accompanied by the decomposition and absorption of ceramic materials. In clinical dentistry, ceramic implant materials are mainly used to prepare ceramic artificial tooth root implants, ceramic artificial bones, and artificial joints. The microstructure of oral ceramic materials is usually composed of crystal phase, glass phase, and gas phase. The characteristics are high compressive strength, hardness, and wear resistance, stable chemical properties, good biological and aesthetic properties, but the material is brittle and prone to breakage. The commonly used oral ceramic materials are feldspar ceramics, hydroxyapatite ceramics, glass ceramics, and alumina ceramics. Porcelain materials are divided into high melting point materials, medium melting point materials, and low melting point materials according to different melting point ranges; According to the composition and properties of materials, it can be further divided into feldspar porcelain and alumina porcelain. Metal ceramic materials are ceramic materials that are fused to the surface of a metal, and there are four forms of bonding with the metal: mechanical bonding, physical bonding, pressure bonding, and chemical bonding. The matching between metal ceramic materials and metal bonding is mainly influenced by three aspects: the thermal expansion coefficient of the two, the relationship between the sintering temperature of metal ceramic and the melting point of the metal, and the wetting state of the bonding interface between the two.