The root prominence of the canine seems to be maintained by the bone graft (Fig.8 C).。The gingival margin gains ~ 5 mm 6 weeks postop when the acrylic dressing is removed (Fig.11,12 (<: previous one), as compared to Fig.7,8).  换一个角度显示血小板膜。由于放置大量骨块，尖牙牙根唇侧隆起永葆青春（图八C）。治疗结束时尖牙牙龈缘高于第一双尖牙（图八），六个星期后，尖牙牙龈缘却低于双尖牙（图十一（箭头：原始牙龈缘）刚刚取出树脂敷料）。

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Xin Wei, DDS, PhD, MS 1st edition 08/26/2020, last revision 09/23/2020