Four months post removal of failed implant for 2nd time (20 days post #28 implant placement), osteotomy at #31 starts with Magic Split (flapless), followed by 3 mm Magic Expander (ME).  Since the latter tends to drift distal while being tapped, a 1.5 mm drill is used to move the osteotomy mesial before reuse of the 3 mm ME (Fig.1).  Red dashed line: the superior border of the Inferior Alveolar Canal. 

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Xin Wei, DDS, PhD, MS 1st edition 08/01/2017, last revision 08/15/2018