whereas it may be necessary to place bone graft lingual to the implant at #18 associated with free hand surgery (Fig.7: >).必须考虑同时给7植体（没有植骨，徒手种植）舌侧（图七：箭头）植骨。

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Xin Wei, DDS, PhD, MS 1st edition 11/11/2020, last revision 07/03/2021