用于检测螺旋种植体及其周围骨组织应力分布的三维有限元分析
Three dimensional finite element analysis to detect stress distribution in spiral implants and surrounding bone.
作者信息
Danza Matteo, Palmieri Annalisa, Farinella Francesca, Brunelli Giorgio, Carinci Francesco, Girardi Ambra, Spinelli Giuseppe
机构信息
Senior Lecturer, School of Dentistry, University of Chieti, Chieti, Italy.
出版信息
Dent Res J (Isfahan). 2009 Fall;6(2):59-64.
BACKGROUND
The aim of research was to study spiral family implant by finite element analysis (FEA) inserted in different bone qualities connected with abutments of different angulations.
METHODS
The biomechanical behaviour of 4.2 × 13 mm dental implants, connecting screw, straight and 15° and 25° angulated abutments subjected to static loads, in contact with high and poor bone qualities was evaluated by FEA.
RESULTS
The lowest stress value was found in the system composed by implants and straight abut-ments loaded with a vertical force, while the highest stress value was found in implants with 15° angulated abutment loaded with an angulated force. In addition, we found the lower the bone quality, the higher the distribution of the stress within the bone.
CONCLUSION
Spiral family implants can be used successfully in low bone quality but applying a straight force is recommended.
背景
本研究旨在通过有限元分析（FEA）研究螺旋型种植体在不同骨质量中与不同角度基台连接时的情况。
方法
采用有限元分析评估4.2×13毫米牙种植体、连接螺钉、直基台以及15°和25°角度基台在承受静态载荷时，与高骨质量和低骨质量接触的生物力学行为。
结果
在种植体和直基台组成的系统中，垂直加载时应力值最低；而在15°角度基台的种植体中，倾斜加载时应力值最高。此外，我们发现骨质量越低，骨内应力分布越高。
结论
螺旋型种植体可成功用于低骨质量情况，但建议施加垂直力。
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