Functional mandibular deformation in edentulous subjects treated with dental implants.

Functional mandibular deformation in edentulous subjects treated with dental implants.
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使用牙种植体治疗的无牙颌受试者的功能性下颌变形。

DOI：
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发表时间：
1997
期刊：
The International journal of prosthodontics
影响因子：
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通讯作者：
J. Kelleway
J. Kelleway
中科院分区：
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文献类型：
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作者：
H. H. Abdel;J. Hobkirk;J. Kelleway

文献摘要

被引文献

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目的 本研究的目的是测量内侧会聚，背腹剪切，和身体旋转在人类下颌骨。 材料和方法 测量使用定制的应变计位移传感器在6个无牙颌受试者谁已与下颌骨内牙种植体治疗。这些被安装在每侧下颌种植体的最远端，并使用多通道模拟/数字转换器和个人计算机进行数据存储和分析，进行真实的时间测量。测量是在种植体加载时进行的，受试者张开和闭合他们的嘴，并进行下颌侧移。内侧会聚测量为最远端植入物部位的线性变化。背腹侧剪切表示为投影到正中矢状面上的左右下颌体的相对旋转，体旋转表示为最远端种植体的相对旋转。 结果 发现钳口变形在打开时立即发生，并且与闭合力和钳口位置相关。观察到内侧会聚达41微米，躯体旋转值达6度，背腹侧剪切值达19度。 结论 该研究首次在临床上证明了3种不同的功能性下颌骨变形模式。
PURPOSE The purpose of this study was to measure medial convergence, dorsoventral shear, and corporal rotation in the human mandible. MATERIALS AND METHODS Measurements were made using custom-fabricated strain gauge displacement transducers in 6 edentulous subjects who had been treated with mandibular endosseous dental implants. These were mounted on the most distal of the mandibular implants on each side, and measurements were made in real time using a multichannel analogue/digital converter and a personal computer for data storage and analysis. Measurements were made while the implants were loaded, and the subjects opened and closed their mouths and made lateral mandibular excursions. Medial convergence was measured as a linear change at the site of the most distal implant. Dorsoventral shear was expressed as a relative rotation of the right and left mandibular bodies projected onto the median sagittal plane, and corporal rotation was expressed as the relative rotation of the most distal implant. RESULTS Jaw deformation was found to occur immediately on opening and was related to closing forces and jaw position. Medial convergence of up to 41 microns was observed, with values for corporal rotation of up to 6 degrees and dorsoventral shear of up to 19 degrees. CONCLUSION The study demonstrated clinically for the first time 3 different and simultaneous patterns of functional mandibular deformation.