Role of Occlusal Vertical Dimension in Spindle Function
Role of Occlusal Vertical Dimension in Spindle Function
复制标题
咬合垂直尺寸在主轴功能中的作用
DOI：
10.1177/154405910508400307
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发表时间：
2005
影响因子：
7.6
通讯作者：
K. Soma
中科院分区：
文献类型：
--
作者：
T. Yabushita;J. Zeredo;K. Toda;K. Soma
一些研究表明，颌肌梭作为受体负责调节和维持咬合垂直距离（OVD）。然而，为了挑战这一假设，我们假设OVD的长期变化可能会影响下颌肌梭的感觉输入。在这项研究中，我们调查咬肌梭功能的变化下增加OVD（iOVD）的条件。研究了咬肌肌梭初级终末和次级终末对周期性正弦牵张的反应。将20只巴比妥酸盐麻醉的雌性Wistar大鼠分为对照组和iOVD组。iOVD组大鼠的上颌磨牙接受了2.0 mm的复合树脂构建。iOVD后，咬肌肌梭敏感性逐渐降低。初级和次级纺锤体末端的影响不同。我们得出结论，iOVD导致咬肌肌梭敏感性降低。这一结果表明，外周感觉可塑性可能发生在OVD的变化。这些变化可能为临床咬合调整的生理适应提供基础。
Several studies have suggested the jaw-muscle spindle as the receptor responsible for regulating and maintaining the occlusal vertical dimension (OVD). However, to challenge this assumption, we hypothesized that long-term changes in OVD could affect the sensory inputs from jaw-muscle spindles. In this study, we investigated changes in masseter muscle spindle function under an increased OVD (iOVD) condition. Responses of primary and secondary endings of masseter muscle spindles to cyclic sinusoidal stretches were investigated. Twenty barbiturate-anesthetized female Wistar rats were divided into control and iOVD groups. Rats in the iOVD group received a 2.0-mm composite resin build-up to the maxillary molars. After iOVD, masseter muscle spindle sensitivity gradually decreased. Primary and secondary spindle endings were affected differently. We conclude that iOVD caused reduction in masseter muscle spindle sensitivity. This result suggests that peripheral sensory plasticity may occur following changes in OVD. Such changes may provide a basis for physiological adaptation to clinical occlusal adjustments.
成年恒河猴咬肌延长后适应性的头影测量分析。
影响因子：
3
作者：
Carlson,DS;Schneiderman,ED
通讯作者：
Schneiderman,ED