A.1245736 B.1235476 C.1254376 D.1243576 E.1234576
A.兩鄰面應(yīng)近于平行 B.頰、舌面應(yīng)無(wú)倒凹,最大周徑降至齦緣 C.軸、線角應(yīng)清楚分明呈直角 D.緣、軸角應(yīng)圓鈍 E.齦緣線相連應(yīng)一致
A.嵌體 B.3/4冠 C.面冠 D.半冠 E.全冠