Objective To evaluate the abutment periodontium condition after restored with the distal - extension attachment dentures.

目的评价冠外附着体义齿修复后基牙牙周的健康状况.

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Objective: To test the rationale for designing an occlusal rest for a distal - extension removable partial denture.

摘要目的: 探讨末端游离缺损义齿(牙合)支托设计的理论基础.

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Therefore, it is a new type of clasp design for the distal extension removable partial dentures.

因此改良卡环可减小或避免传给基牙扭力, 是一种适用于远中游离端可摘局部义齿的新型卡环设计.

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