Objective: To observe the effectiveness of foursquare coil cable root cap attachment system in removable partial dentures.
目的：探讨四角圈簧根帽附着体义齿的制作方法和临床应用。
Objective:To explore the utilization of four angles coil cable root cap attachment in single side distal extension removable partial dentures.
目的：探讨四角圈簧根帽附着体在后牙游离缺失单侧修复中的应用。
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