[Basic studies on Konuskronen by using the finite element method. Part 2. Stress analysis of mandibular distal-extension removable partial denture].
[Basic studies on Konuskronen by using the finite element method. Part 2. Stress analysis of mandibular distal-extension removable partial denture].
复制标题
[利用有限元法对 Konuskronen 进行基础研究。
DOI：
10.2186/jjps.31.186
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发表时间：
1987
期刊：
影响因子：
--
通讯作者：
T. Yamada
中科院分区：
文献类型：
--
作者：
T. Yamada
本研究的目的是分析安装 Konuskronen 伸缩义齿时牙齿和下颌骨的应力分布。采用有限元法，改变载荷方向、支撑基台的骨水平、基台数量等条件进行分析。该模型包括尖牙、前磨牙、远端延伸的 Konuskronen 伸缩义齿及其支撑结构。使用第 1 部分中报告的关节单元来模拟基台外冠和内冠之间的接触区域的条件。分析结果表明：当施加垂直载荷时，应力分布在基台及其支撑骨上。然而，当施加45°的负载时；垂直轴上，支撑义齿基托的骨内应力增加。随着支撑基牙的骨水平降低，应力增加并集中到第二前磨牙。双基台模型的应力大于三基台模型。这表明使用更多的牙齿作为可摘局部义齿的基牙在机械上是可取的。
The purpose of this study was to analyze the stress distribution of the teeth and the mandibular bone when a Konuskronen telescope denture was applied. The analysis was conducted by using the finite element method and changing the conditions such as thedirection of the load, the level of the bone supporting the abutments, and the number of the abutments. The model included canine, premolars, a distal-extension Konuskronen telescope denture, and their supporting structures.The joint element reported at Part 1 was used in order to simulate the conditions of the contact area between outer and inner crowns of the abutments.The results of analysis indicated the followings.When the vertical load was applied, the stresses were distributed to the abutments and their supporting bone. However, when the load was applied 45deg; to the vertical axis, the stresses in the bone supporting the denture base were increased.As the level of the bone supporting the abutments was reduced, the stresses increased and concentrated to the second premolar.The stresses of two-abutment model were larger than that of the three-abutment model. This indicated that the use of more teeth for the abutments of the removable partial denture was mechanically desirable.