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After placement of a 4.5x8.5 mm implant at #13, a vertical anchor pin is used, which is helpful for #14 osteotomy (Fig.2). One hand is free. Sinus lift with 2.8 mm reamer is not efficient, since it is difficult to feel stopper. A 5x7.3 mm implant has to be removed from the site of #14 for use of Magic Expanders from 3.0 to 4.3 mm at the depth of 13 mm (gingival level).
Xin Wei, DDS, PhD, MS 1st edition 08/30/2018, last revision 08/30/2018