ORAL MOTOR AND SENSORY FUNCTIONS IN DENTURE WEARERS

拟议的两项研究的主要目的是确定 a）感觉运动功能与咀嚼功能之间的相互关系 有齿人的工作表现、食物选择和病人满意度 和假牙佩戴者;和B）EMG生物反馈程序的影响， 建立一个类似的双边肌肉活动的咀嚼模式， 义齿佩戴者和这种变化对他们咀嚼的影响 性能、食物选择和患者满意度。 在研究1中，140名戴有临床可接受义齿的义齿患者 将被分为两个相等的组， 性能 对照组为70名有28颗或更多牙齿的有牙齿的人 将提供参考值和变异性估计， 评估感觉、运动和知觉功能的改变， 咀嚼性能等指标。 医疗和牙科 病史、临床口面和义齿评估以及主观 收集市民对食物的喜好及满意程度的评分。 目的 咀嚼性能、咬肌肌电活动、咬合力、 触觉和两点辨别阈值，立体认知能力， 唾液分泌速率和口腔清除能力。 的 牙齿受试者和戴义齿者之间的比较， 将进行低性能以评估口腔感觉的任何改变， 义齿戴用者的运动和知觉功能及其对 咀嚼性能、患者满意度和食物选择。 在研究II中，EMG生物反馈程序的效果，以产生一个 双侧咀嚼努力模式对咀嚼效率的影响 在90例咀嚼功能低下的义齿佩戴者中进行了评价。 患者将被随机分为45名对照组或实验组。 生物反馈组45人。 双侧咬肌肌电活动将 记录患者执行咬合力和首选侧时的情况， 用花生做吞咽阈咀嚼试验。 实验 然后，小组将参加每两周一次的EMG生物反馈会议， 八周。 生物反馈程序将被设计成改变 咀嚼模式，使患者学会运用相等的咬肌 双边活动。 对照组将遵循相同的时间表 每两周一次，持续八周。 他们将得到指示， 两侧咀嚼，不会收到生物反馈。 性能 测试和主观评价将在四周后重复进行， 培训，在八周培训期结束后， 三个月

The primary objectives of the proposed two studies are to ascertain the: a) interrelationships between sensorimotor functions and masticatory performance, food selection and patient satisfaction in dentate persons and denture wearers; and b) influence of an EMG biofeedback program to establish a chewing pattern of similar bilateral muscle activity in denture wearers and the effects of this change on their masticatory performance, food selection, and patient satisfaction. In Study 1, 140 denture patients with clinically acceptable dentures will be divided into two equal groups of low and high masticatory performance. A control group of 70 dentate persons with 28 or more teeth will provide the reference values and estimates of variability for assessing alterations of sensory, motor and perceptual functions, masticatory performance and other measures. Medical and dental histories, clinical orofacial and denture evaluations and subjective ratings of food preference and satisfaction will be collected. Objective measures of masticatory performance, masseter EMG activity, bite force, tactile and two-point discrimination thresholds, stereognostic ability, salivary secretion rates and oral clearance ability will be made. The comparisons between dentate subjects and denture wearers with high and low performance will be made to assess any alterations in oral sensory, motor and perceptual functions in denture wearers and their impact on masticatory performance, patient satisfaction and food selection. In Study II, the effects of an EMG biofeedback program, to produce a bilateral pattern of chewing effort on masticatory efficiency will be evaluated in 90 denture wearers with low masticatory performance. Patients will be randomized into a control group of 45 or an experimental biofeedback group of 45 persons. Bilateral masseter EMG activity will be recorded while the patients perform bite force and preferred side and swallowing threshold masticatory tests with peanuts. The experimental group will then participate in bi-weekly EMG biofeedback sessions for eight weeks. The biofeedback program will be designed to alter the chewing pattern so that patients learn to apply equal masseter muscle activity bilaterally. The control group will follow the same schedule of bi-weekly sessions for eight weeks. They will be given instructions to chew bilaterally and will not receive the biofeedback. The performance tests and subjective evaluations will be repeated after four weeks of training, at the end of the eight week training period and thereafter at three months.