Osteotomy at #3 is performed last (Fig.1,2); as planned, a 4 mm cortical tap is used with guide for sinus lift.  Unfortunately the sinus membrane is perforated.  Implant placement is aborted.  Instead Osteogen plug is inserted into the osteotomy, which is fixed in place by acrylic extending from the provisional at #4.  Osteotomy for #3 implant will be attempted with control of the depth in 4 months.  63岁女上颌局部义齿，伴有粘膜霉菌感染，同意植牙替代，所以必须即刻修复，3号牙提升失败，导板环形刀造成伤口必须靠4号牙临时牙冠延申保护。12，13号牙即刻种植，即刻修复是最好保留骨粉方式，必须即刻安置基台，不过都没有就位。

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Xin Wei, DDS, PhD, MS 1st edition 03/05/2019, last revision 03/14/2021