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The patient returns 3 days postop before leaving abroad. The 6-month membrane remains in place (Fig.4), while the ridge at #15 is minimally atrophic without bone graft in China (Fig.5). 但是大多数拔牙不仅要做植骨，而且要努力做的好。
Xin Wei, DDS, PhD, MS 1st edition 09/27/2019, last revision 10/02/2020