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我们根据双尖牙的解剖和功能特点研制了一种“Y型桩—板结构双尖牙桩冠”(以下简称“Y桩冠”)用于修复单根管的双尖牙冠大部或全部缺损。
According to the anatomical and functional characteristics of the bicuspids, we developed a “Y-shaped pile-plate structure double cantilever crown” (hereinafter referred to as “Y-crown” All defects.