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采用双套冠固位修复体修复牙列缺捐具有稳固、美观、舒适、咀嚼功能好等特点。该修复体的内冠粘固在基牙上，外冠与连接体、网状结构支架铸造为一体。设计时充分利用经牙髓治疗后的残根、残冠制作双套冠，根据固位的需耍，在健康的基牙上放置卡环，制作缓冲型双套冠—铸造卡环联合固位修复体。这样既可减少对活髓基牙的切磨，保护基牙，又能合理分配矜力，增加义齿的固位和稳定。此修复方法应用面广，设计灵活，值得推广。
The use of double crown retention prosthesis repair dentition lack of donor has a solid, beautiful, comfortable, good chewing function and so on. The inner cap of the prosthesis is fixed on the abutment teeth, the outer cap and the connecting body and the mesh structure support are cast as a whole. Take full advantage of the design after the endodontic treatment of residual roots, residual crown made double sets of crowns, according to the need for retention, placed in the healthy abutment snap ring, making double-crown cushioning - Casting clasp combined retention Restoration body. This will not only reduce the incisors of live pulp abutments, protect the abutments, but also reasonable distribution of force, increase denture retention and stability. This repair method is widely used, flexible design, it is worth promoting.