16.下列有關根管銼針(file)與根管鑽針(reamer)的敘述,何者正確? ..-阿摩線上測驗
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joe極白 大一下 (2017/06/30)
(A) K‐Reamer 和 K‐File 的 large size(三角形)和 small size(正方形)橫切面形狀不一樣;另外 H‐file 是水滴型。(B) Historically, root canal instruments were manufactured from carbon steel. Subsequently, the use of stainless steel greatly improved the quality of instruments. More recently, the introduction of the nickel‐titanium (NiTi) alloy in the manufacture of endodontic instruments has resulted in significant i.....觀看完整全文,請先登入 |