名词
中文翻译：六龄齿
同义词：
['sixth molar', 'sixth tooth']
例句：
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1.The six-year molar is the last permanent tooth to erupt in a child's mouth.
六龄齿是孩子口中最后一颗永久牙齿。
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2. The dentist removed the six-year molar and replaced it with a dental implant.
牙医拔除了六龄齿并植入了一颗牙植体。
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3.During orthodontic treatment, the six-year molar plays a crucial role in correcting bite issues.
在正畸治疗期间，六龄齿在纠正咬合问题中起着关键作用。