Hodosh M, Shklar G, Gettleman L, Povar M
J Prosthet Dent. 1980 Feb;43(2):197-203. doi: 10.1016/0022-3913(80)90187-0.
A study was made of the strength properties of several composite dental implant materials composed of silica microspheres (6%, 24%, and 48% by weight) and PMMA. Prepared specimens of the materials were tested for compressive strength and tensile strength as a function of the curing methods. Compressive strength was reduced only slightly when the 6% mixture was used, as compared to 100% PMMA, but the compressive strengths of the 12% and 24% mixtures were reduced by approximately 30% when compared to 100% PMMA. The compressive strengths of these materials were reduced even further after curing in a microwave oven, and the tensile strengths decreased to a greater degree. The 6% mixture was reduced by 38% in the heat-cured specimens and was reduced by 27% in the microwave-cured specimens. Tooth replica implants were placed in baboons and the peri-implant tissues were studied histologically after 6 months. Inflammation was minimal. Peri-implant alveolar bone was viable and active, and both connective tissue and epithelial attachment to the implant surface was evident.
对几种由二氧化硅微球（重量分别为6%、24%和48%）和聚甲基丙烯酸甲酯（PMMA）组成的复合牙科植入材料的强度特性进行了研究。制备的材料试样针对抗压强度和抗拉强度作为固化方法的函数进行了测试。与100% PMMA相比，使用6%混合物时抗压强度仅略有降低，但与100% PMMA相比，12%和24%混合物的抗压强度降低了约30%。这些材料在微波炉中固化后抗压强度进一步降低，抗拉强度下降幅度更大。热固化试样中6%混合物降低了38%，微波固化试样中降低了27%。将牙齿复制植入物植入狒狒体内，并在6个月后对植入物周围组织进行组织学研究。炎症轻微。植入物周围的牙槽骨有活力且活跃，结缔组织和上皮与植入物表面的附着均明显可见。
