名词
中文翻译：额外上颌锚定
同义词：
['extraoral anchorage', 'extramaxillary fixation']
例句：
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1.The patient's extramaxillary anchorage was insufficient for the surgery.
患者的额外上颌锚定不足以进行手术。
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2.The orthodontist used a special device to correct the patient's extramaxillary anchorage.
正畸医生使用了一种特殊的装置来纠正患者的额外上颌锚定。
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3.The study found that patients with poor extramaxillary anchorage were more likely to experience tooth movement problems.
研究发现，拥有不良额外上颌锚定的患者更有可能经历牙齿移动问题。