Although the patient agrees to have the tooth #13 with mobility II removed, implants at #14 and 15 should help alleviate occlusal trauma to the former.  Initial osteotomy depth will be 1 and 2 mm at #14 and 15 (Fig.1: 1-2 mm from the sinus floor), followed Magic Sinus Lifter and bone graft.

Magic Lifter

Xin Wei, DDS, PhD, MS 1st edition 10/02/2016, last revision 10/02/2016