结果肌激动器对下颌生长起积极作用，对上颌生长可能有抑制作用。
Results The activator affects the growth of mandible positively and inhibits the growth of the maxilla.
目的：研究口外力与肌激动器联合使用对于咬肌与颞肌前束的肌动电流的影响。
Objective: To study the electromyographic activity of masseter muscle and anterior temporal muscle in response to treatment with headgearactivator combination.
同时考虑到临床试验，这种试验可以评估在不经过外科手术或任何综合症特点，应用肌激动器或生物调节器后的面部软组织改变。
Clinical trials, which assessed facial soft tissue changes with the use of either an Activator or a Bionator appliance without any surgical intervention or syndromic characteristics, were considered.
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