70.進行牙齦豐隆術(gingival augmentation)時，使用下列何種移植材料最可預期增加角質化組織 (keratinized tissue)的寬度？
(A)free graft from the palate
(B)acellular freeze‐dried dermal matrix
(C)human fibroblast‐derived dermal matrix
(D)subepithelial connective tissue graft

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統計： A(15), B(0), C(1), D(1), E(0) #3974309