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。
Wedge-shaped defect is an abrasion that caused by long-term abrasion in tooth cervical.
目的了解老年人牙楔状缺损的流行病学情况，为开展老年社区医疗保健服务，提供较为确切的依据。
Objective to get the epidemiological information of the teeth wedge-shaped defects of the aged, in order to provide data for developing community health services for the elderly.
方法：选择相邻的前磨牙楔状缺损患者76例218颗患牙，随机分为2组，第一组修复前预备洞型；第二组修复前不预备洞型。
Methods: 76 old people of 218 premolar teeth with wedge-shaped defect were divided into two groups randomly: the teeth were prepared in the first group but not in the second group.
结论牙龈退缩与楔状缺损是中老年人常见的牙病。
Conclusion the gingival recession and the wedge shaped defect are common dental diseases in the elderly.
楔状缺损需充填和根管治疗的每百人待治疗牙数分别为289.81和10.20； 磨损需脱敏治疗的每百人待治疗牙数为170.20。
The numbers of the teeth needed for treatment per hundred people were 289.81 for filling, 10.20 for root canal therapy, and 170.20 for desensitization treatment.
目的探讨老年人牙体楔状缺损患病情况及相关因素。
Objective to study the tooth wedge-shaped defects and related factors in aged people.
结论表明自酸蚀粘接系统的复合树脂修复牙体楔状缺损与全酸蚀粘接系统相比，具有固位性好、边缘封闭性强、对牙髓刺激小、成功率高等优点。
Objective:To compare the effect of FL-Bond adhesive system with that of total etching adhesive system, that in treating wedge-shaped defect with light cured composite resin.
A组109颗重度楔状缺损牙，采用铸造钴铬合金桩、钴铬合金烤瓷冠修复；
Patients in group A(109 teeth) were treated with cast cobalt-chromium alloy post, cobalt-chromium alloy handcuffed ceramic crowns;
目的比较玻璃离子和光固化树脂两种材料修复牙体楔状缺损的临床效果。
Residual HEMA released from five hybrid dental materials of composite resin and glass ionomer after curing;
目的比较玻璃离子和光固化树脂两种材料修复牙体楔状缺损的临床效果。
Residual HEMA released from five hybrid dental materials of composite resin and glass ionomer after curing;
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