一、前言目前,人工种植牙已成为修复失牙的方法之一。随着工业生产技术的发展,为人工种植牙提供了很多新型材料。多种人工种植体材料已用于动物和临床研究。种植体材料应具备以下条件:1.口腔组织对材料有较好的耐受性,材料对组织没有或极弱的化学刺激,不产生支持骨的吸收。2.对体液有充分的抗腐蚀性,能长期保持所需的机械性能。3.种植体与周围组织紧密结合,以抵御细菌的渗入,防止感染发生。4.种植体材料与组织必须是生物相容的。5.材料与骨组织 I. Introduction At present, artificial implants have become one of the methods to repair lost teeth. With the development of industrial production technology, many new materials are provided for artificial implants. A variety of artificial implant materials have been used in animal and clinical research. Implant materials should have the following conditions: 1. Oral tissue has better tolerance to the material, the material has no or very weak chemical stimulation, does not produce support for bone absorption. 2. The body fluids have sufficient corrosion resistance, long-term maintenance of the required mechanical properties. 3 implants and the surrounding tissue in close contact with bacteria to prevent infiltration, to prevent infection. 4. The implant material and tissue must be biocompatible. 5 materials and bone tissue