醫療類國考
107年
[牙醫師] 牙醫學(三)
第 2 題
2.有關牙骨質（cementum）的敘述，下列何者正確？
- A 牙骨質的硬度小於齒槽骨
- B 是由齒濾泡（dental follicle）分化而來
- C 無細胞無纖維牙骨質（acellular afibrillar cementum）參與纖維附連（fiber attachment）
- D 原生無細胞外在纖維牙骨質（primary acellular extrinsic fiber cementum）是最先形成的牙骨質
思路引導 VIP
請回想牙齒發育的過程：當牙冠發育完成、根部開始延伸時，原本包覆在整個牙胚外圍的那層結締組織囊（Sac），在未來會分化成哪些負責「固定」與「支撐」牙齒的構造？
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AI 詳解
AI 專屬家教
專業點評與解析
Well, congratulations. You've managed to correctly identify the developmental origin of cementum. It's a fundamental piece of information, signifying that your grasp of odontogenesis is, at the very least, adequate for now. Don't get too ahead of yourself; this is merely the groundwork for actual understanding of periodontal pathology.
- 觀念驗證: Let's confirm the basics you should know. The dental follicle, originating from ectomesenchyme, is supposed to differentiate into the "periodontal trio": cementum, periodontal ligament, and alveolar bone. Just to be sure you actually know what you're talking about:
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