运用多种人工合成异源体物质于面部整容已多年,如硅胶、钛、聚四氟乙烯和羟基磷灰石等,它们有各自优点,但也存在较多的缺陷。自70年代起开始采用多孔高密度聚乙烯物(HDPE),该物较以往使用的移植物有其许多优点。该移植物无活性,无炎性反应和过敏反应。在室温下有一定弹性,在热 The use of a variety of synthetic allogeneic substances in facial cosmetic has many years, such as silica, titanium, PTFE and hydroxyapatite, which have their own advantages, but there are also many shortcomings. Since the 1970s, porous high-density polyethylene (HDPE) has been used, which has many advantages over the grafts used in the past. The graft is inactive, has no inflammatory reaction and anaphylaxis. There is some elasticity at room temperature, in heat