目的：确定最佳的衔铁厚度；

Objective:To define the best thickness of keeper;

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是软铁的衔铁。

Is armature of soft iron.

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可卸式衔铁拆下盘状衔铁及中心螺丝后，钛桩对MRI影像几乎没有影响。

After removing the keeper from titanium post keeper, the post had no artifact on MRI.

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可卸式衔铁拆下盘状衔铁及中心螺丝后，钛桩对MRI影像几乎没有影响。

After removing the keeper from titanium post keeper, the post had no artifact on MRI.

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