CHARACTERISTICS OF MANDIBULAR MASTICATORY MOVEMENT IN YOUNG AND ELDERLY DENTATE SUBJECTS
CHARACTERISTICS OF MANDIBULAR MASTICATORY MOVEMENT IN YOUNG AND ELDERLY DENTATE SUBJECTS
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DOI：
10.1177/00220345900690021101
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发表时间：
1990-02-01
影响因子：
7.6
通讯作者：
CARLSSON, GE
中科院分区：
文献类型：
--
作者：
KARLSSON, S;CARLSSON, GE
下颌运动的大小和速度是评价咀嚼和言语模式的重要变量。然而，很少有资料是关于老年人的牙齿和他们的口腔运动功能和行为。在14名老年人（平均年龄80岁）和30名年轻人（平均年龄26岁）咀嚼脆饼的齿状受试者中，进行了从开始到吞咽的咀嚼期的双重记录。通过Selspot运动分析系统获得下颌运动的三维记录，该系统监测连接到测试对象的发光二极管发出的红外光脉冲。两组之间的总咀嚼周期的持续时间没有差异。老年组下颌骨运动速度在开放期和闭合期均显著降低。尽管很大的个体间的变化，显着较小的平均垂直位移的下颌骨被发现在老年人比年轻组。老年和年轻受试者的垂直打开运动的外侧分量相似。两组咀嚼速率相似可能意味着中枢模式发生器的功能不受老年的影响。然而，衰老与下颌垂直位移和速度的减少有关。
Dimensions and velocity of mandibular movement are important variables in the evaluation of masticatory and speech patterns. However, little information is available concerning elderly dentates and their oral motor function and behavior. Double recordings of a chewing period, from start to swallowing, were performed in 14 elderly (mean age, 80 years) and 30 young (mean age, 26 years) dentate subjects chewing crispbread. Three-dimensional records of mandibular movements were obtained by means of the Selspot movement analysis system, which monitors infrared light pulses from light-emitting diodes attached to the test subject. There was no difference in the duration of the total chewing cycle between the two groups. Mandibular velocity was significantly lower in the elderly group, in both opening and the closing phases. Despite great inter-individual variations, significantly smaller mean vertical displacements of the mandible were found in the elderly than in the younger group. The lateral component in the vertical opening movement was similar for both the elderly and younger subjects. The similar chewing rates in the two groups might imply that the function of the central pattern generator was unaffected by old age. Aging was, however, associated with reduction of vertical mandibular displacement and velocity.