31.矯正下顎骨過突症，下列何種手術最容易損傷到下齒槽神經?
(A)C-shape ramus osteotomy
(B)sagittal split osteotomy
(C)vertical ramus osteotomy
(D)subcondylar osteotomy

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統計： A(5), B(280), C(42), D(1), E(0) #1032526