33.以通用命名法(Universal numbering system)編號,若為正常齒列,下列那個區域不在切緣1/3 (incisal third)處?
(A)24遠心接觸點(distal contact point)
(B)26近心接觸點(mesial contact point)
(C)10近心接觸點(mesial contact point)
(D)7遠心接觸點(distal contact point)
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統計: A(22), B(38), C(49), D(722), E(0) #3378534
統計: A(22), B(38), C(49), D(722), E(0) #3378534