Bone expansion and bending (BEB) continues until 4.3 mm ME; a 4.3 mm Magic Drill (MD) is used for depth (13 mm gingival level).  A 4.5x11 mm dummy implant is placed 2 mm subgingival (Fig.2).  The buccal crest (white dashed line) is lower than the lingual one (arrows).  A definitive implant should be placed around the level of the buccal crest.  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