da Costa Letícia Miranda Resende, Graciosa Maylli Daiani, Coelho Jerusa Jordão, Rocha Roberto, Ries Lilian Gerdi Kittel
a School of Physical Education , Federal University of Rio Grande do Sul (UFRGS) , Porto Alegre , Brazil.
b Center of Health and Sport Sciences , State University of Santa Catarina (UDESC) , Florianópolis , Brazil.
Cranio. 2018 Jul;36(4):257-263. doi: 10.1080/08869634.2017.1334021. Epub 2017 May 31.
To investigate whether children with complete unilateral cleft lip and palate (CLP) have altered control of masticatory muscles.
The muscular activity of 66 children with CLP (n = 33) and without CLP (n = 33), aged 6-12 years was assessed during different tasks (rest, isometry, mastication) using electromyography.
The activation for the analyzed muscles was higher in children with CLP at rest (R) and inactive period (IP) (p < 0.05). The muscles of children with CLP remained active for longer than those without CLP (p < 0.05), and the length of the masticatory cycle was higher in children with CLP (p < 0.05).
Children with CLP have longer muscle activation and increased cycle time during the chewing cycle, which might be a consequence of malocclusion, resulting in difficulty chewing.
研究完全性单侧唇腭裂（CLP）患儿咀嚼肌的控制是否发生改变。
采用肌电图评估66名6至12岁的CLP患儿（n = 33）和非CLP患儿（n = 33）在不同任务（休息、等长收缩、咀嚼）期间的肌肉活动。
CLP患儿在休息（R）和非活动期（IP）时，所分析肌肉的激活程度更高（p < 0.05）。CLP患儿的肌肉保持活跃的时间比非CLP患儿更长（p < 0.05），且CLP患儿咀嚼周期的时长更长（p < 0.05）。
CLP患儿在咀嚼周期中肌肉激活时间更长，周期时间增加，这可能是错牙合的结果，导致咀嚼困难。
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