Three-dimensional finite element stress analysis in and around the Screw-Vent implant.
Three-dimensional finite element stress analysis in and around the Screw-Vent implant.
复制标题
Screw-Vent 种植体内部及其周围的三维有限元应力分析。
DOI：
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发表时间：
1991
期刊：
影响因子：
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通讯作者：
D. Pipko
中科院分区：
文献类型：
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作者：
N. Clelland;Y. H. Ismail;H. S. Zaki;D. Pipko
采用三维有限元应力分析方法确定螺钉-通口内种植体及其支撑组织内的应力分布规律和集中情况。对于这种商业纯钛植入物，最大应力位于骨嵴下方的植入物环内。这些应力至少比商用纯钛的耐久极限（259.90 MPa）小18倍。骨的最大应力（19.57 MPa）在舌侧至颈圈上部。以前对类似种植体的纵向x线摄影研究显示种植体的中、远端骨质流失。对于Screw-Vent，近端和远端应力（最大0.38 MPa）远低于颊部和舌部对种植体的应力。骨、颊和舌向种植体的应力转移的临床意义尚未确定。
The three-dimensional finite element stress analysis method was used to determine the pattern and concentration of stresses within the Screw-Vent endosseous implant and its supporting tissues. For this commercially pure titanium implant, maximum stresses were located within the implant collar immediately below the bony crest. These stresses were at least 18 times less than the endurance limit of commercially pure titanium (259.90 MPa). Maximum stresses (19.57 MPa) in the bone were lingual to the superior portion of the collar. Previous longitudinal radiographic studies of a similar implant have revealed bone loss mesial and distal to the implant. For the Screw-Vent, mesial and distal stresses (maximum 0.38 MPa) were much lower than those buccal and lingual to the implant. The clinical significance of the stress transfer to the bone buccal and lingual to the implant has yet to be determined.