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单纯前牙缺失活动修复的设计多采用单臂间隙卡固位。近年来笔者设计了一种单臂间隙“U”形卡,试用于20例病人取得了较好的固位效果。一、病例资料:20例中,上前牙缺失者18例,下前牙缺失者2例。单个缺牙间隙16例,2个缺牙间隙4例。单个牙缺失8例,2个牙缺失9例,3个牙缺失1例,4个牙缺失2例。修复体唇侧加基托者仅3例。所选病例具有:基牙牙冠高大,倒凹区明显(伹不宜过大);缺牙间隙无明显牙槽脊吸收;邻牙无松动。二、设计与制作:“U”形卡的设计基本与单
Pure anterior teeth missing activity repair design to use more than one-arm clearance card retention. In recent years, I designed a single-arm gap “U” -shaped card, trial for 20 patients achieved better retention effect. First, the case information: 20 cases, 18 cases of missing anterior teeth, lower anterior teeth in 2 cases. A single missing tooth gap in 16 cases, two missing teeth in 4 cases. There were 8 cases with single tooth loss, 9 cases with 2 teeth missing, 1 case with 3 teeth missing and 2 cases with 4 teeth missing. Restoration of the labial side of the base care only 3 cases. Selected cases have: high crown abutment, inverted concave area significantly (伹 should not be too large); missing tooth gap no obvious alveolar ridge absorption; adjacent teeth without loosening. Second, the design and production: “U” -shaped card design basic and single