(单选题)
联合卡环适用于( )。
A单侧个别牙缺失
B单侧牙弓缺失
C前牙缺失
D双侧后牙缺失
E前后牙均有缺失
正确答案
答案解析
[解析] 联合卡环是由两个卡环通过共同的卡环体连接而成,卡环体位于相邻两基牙的颌外展隙,并与伸向颌面的颌支托相连接,适用于单侧牙弓方缺失,甚至牙冠短而稳固,成相邻两牙之间有间隙者。
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