Santos Maria Teresa Botti Rodrigues, Manzano Felipe Scalco, Chamlian Therezinha Rosane, Masiero Danilo, Jardim Jose R
Discipline of Dentistry, Persons with Disabilities Division, Cruzeiro do Sul University, São Paulo, Brazil.
Spec Care Dentist. 2010 Jul-Aug;30(4):163-7. doi: 10.1111/j.1754-4505.2010.00143.x.
The motor effort of jaw-closing muscles during maximal voluntary clenching (MVC) was compared between individuals with spastic cerebral palsy (CP) and nondisabled control subjects (CG). Bilateral electromyographic (EMG) activity of the anterior temporalis (AT) and masseter (MS) muscles was obtained during MVC in 22 subjects with CP and 29 nondisabled subjects. The oral functional status of the group with CP was evaluated using the Orofacial Motor Function Assessment Scale. The group with CP presented lower bilateral EMG activity during MVC compared to the control group for both AT and MS muscles. Comparisons of AT and MS EMG activity showed no difference in muscular effort. Subgroups with CP who were only slightly and very slightly orally impaired had a higher bilateral AT EMG activity compared to individuals with CP who were severely and moderately compromised. A statistically significant positive correlation was found between the oral motor function and EMG activity of the group with CP in all the muscles evaluated. Individuals with CP had motor weakness in the jaw-closing muscles, a condition that may compromise their masticatory function.
比较了痉挛型脑瘫（CP）患者和非残疾对照受试者（CG）在最大自主紧咬（MVC）期间咬肌闭合的运动用力情况。在22名CP患者和29名非残疾受试者进行MVC时，获取了颞肌前束（AT）和咬肌（MS）的双侧肌电图（EMG）活动。使用口面部运动功能评估量表评估CP组的口腔功能状态。与对照组相比，CP组在MVC期间双侧AT和MS肌肉的EMG活动较低。AT和MS的EMG活动比较显示肌肉用力无差异。与严重和中度受损的CP患者相比，仅轻度和极轻度口腔受损的CP亚组双侧AT的EMG活动更高。在所有评估肌肉中，CP组的口腔运动功能与EMG活动之间存在统计学上显著的正相关。CP患者咬肌存在运动无力，这种情况可能会损害其咀嚼功能。
