Measurement of the Physiological Mobility of Individual Teeth in an Axial Direction
Measurement of the Physiological Mobility of Individual Teeth in an Axial Direction
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DOI：
10.1177/00220345600390032201
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发表时间：
1960-05
影响因子：
7.6
通讯作者：
G. J. Parfitt
中科院分区：
文献类型：
--
作者：
G. J. Parfitt
咀嚼食物时产生的力会使牙齿在牙槽中移动。这种移动受到牙齿周围组织的弹性的抵抗，特别是那些包括牙周膜的组织。尽管Muhlemann等人已经测量了侧向移动，但是只有少数设备能够测量小的生理轴向牙齿移动。Zerynner 9 ' 10描述了一种利用聚光器的可移动板的方法，一个连接到待测量的牙齿上，另一个连接到嵌入大鼠颌的物质上。Picton '1描述了一种通过电阻应变计测量轴向牙齿移动的临床方法。量规的一端连接到单个牙齿，另一端通过弹簧连接到相邻牙齿。研究轴向移动是因为可以直接测量组织的拉伸或压缩，因为牙齿可以在这个方向上整体移动而不会倾斜，因此牙齿上的所有点都在相同的方向上移动相同的量。因此，测量装置的应用点并不重要。
Forces such as those produced during the mastication of food cause the tooth to move in its socket. This movement is resisted by the resiliency of the tissues surrounding the tooth, particularly those comprising the periodontal membrane. Although lateral movements have been measured by Muhlemann'-8 and others, only a few devices have been described that are capable of measuring the small physiological axial tooth movements. Zwirner9' 10 described a method utilizing the movable plates of a condenser, one attached to the tooth to be measured and the other to the substance in which the jaws of a rat were imbedded. Picton'1 described a clinical method of measuring axial tooth movement by means of a resistance-strain gauge. One end of the gauge was attached to a single tooth and the other through a spring to the adjacent teeth. Axial movement has been studied because direct measurement of tension or compression of tissues can be made as the tooth can be moved bodily in this direction without tilting, so that all points on the tooth move the same amount and in the same direction. The points of application of the measurement devices are, therefore, not critical.