A.少數(shù)牙缺失 B.缺失間隙小 C.缺隙兩端基牙正常 D.基牙穩(wěn)固 E.游離端缺失
A.10° B.15° C.20° D.25° E.30°
A.容易造成菌斑附著 B.邊緣不易密合 C.易產(chǎn)生繼發(fā)齲 D.在前牙區(qū)不美觀 E.易形成肩臺(tái)