A 56-year-old man returns with chief complaint of a loose upper left tooth.  Exam reveals fractured root (Fig.1 arrowheads).  The apex is close to the sinus (Fig.2 (CT coronal section) S (B: buccal)).根尖骨质短，DIO实验室拒绝做即种导板。腭侧骨板吸收比颊侧严重，植体应该种植基本在牙槽窝中央。

15 mm Implant with Guide 修复  Next 手术 Xin Wei, DDS, PhD, MS 1st edition 12/06/2018, last revision 06/13/2021