... sully undercut 沟壁掏蚀 tooth undercut 根切 undercut area 倒凹区 ...
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non-undercut area 部分为基牙的非倒凹区
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The undercut area may stick slide. We may consider to add an ejector pin on the slide.
产品扣位处可能粘行位。我们需考虑行位上加顶针；
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Methods LFA was extended as far as possible toward the undercut area behind the mylohyoid ridge in 23 patients.
方法23例病人全口义齿修复时舌翼区尽量伸展至下颌舌骨峪后的倒凹区内。
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