After turning, the crown sits down with screw tightening; the patient feels pain from the gingival cuff, which is blanched (Fig.14).  邻面必须完全没有接触，牙冠/基台才有可能完全就位，需要X光片证实。

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Xin Wei, DDS, PhD, MS 1st edition 03/08/2021, last revision 03/13/2021