摘要
目的 :探讨种植体弹性模量的变化对颌骨表面压应变值的影响。方法 :将弹性模量为53GPa、78GPa、110GPa的种植体分别植入人工颌骨模型 ,利用电阻应变测量法记录种植体承载不同的垂直负荷时颌骨表面的压应变值。结果 :在相同垂直载荷下 ,当种植体的弹性模量由高至低时 ,人工颌骨表面的压应变值随着弹性模量的降低而增大。结论 :降低种植体的弹性模量 ,有利于将种植体承受的功能负荷以压应力的形式传递到骨组织中去 。
Objective:To study the the effects of elastic modulum of dental implants on the compressive stress in the surface of atrificial jaw models.Methods: The elastic modulum of three type implants was 53 GPa,78 GPa and 110 GPa. The strain value was recorded when the implants inserted into artificial jaw were loaded vertically. Results: The compressive strains increased as the elastic modulus of implants declined, and the compressive strains of the three type implants were significantly different (p<0.05). Conclusion: Reducing elastic modulus of implant can conduct the functional load to bone as interfacial compressive stress form, and is a valid way to improve biomechanic compatibility of dental implant.
出处
《中国口腔种植学杂志》
2002年第3期118-120,131,共4页
Chinese Journal of Oral Implantology
