Objective to explore a better material for restoring wedge-shaped defect.
目的：探讨修复楔形缺损较好的材料。
Objective to explore the better material for restoring wedge shaped defect.
目的探讨修复楔形缺损较好的材料。
Wedge-shaped defect is an abrasion that caused by long-term abrasion in tooth cervical.
牙楔状缺损是牙颈部硬组织缓慢磨耗所致的缺损，由于这种缺损常呈楔形而得名。
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