Preop: buccal swelling and erythema (Fig.2 *).颊侧牙龈红肿(图二 *)。准备即拔即种,但是术中(徒手)发现难度高,改作位点保留。

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Xin Wei, DDS, PhD, MS 1st edition 06/16/2020, last revision 11/29/2020