Fig.2: The 1st (7x11 mm) implant is 4 mm from the inferior alveolar canal. 

In the 2nd procedure, osteotomy is deepened by approximately 2 mm.  A 7x14 mm tap is inserted (Fig.4).  There is apical space (arrowheads) to be engaged further.

The apical space disappears when a 7x14 mm implant (Fig.5 I) is placed.  A: abutment.

The implant remains stable 4 months postop without bone resorption (Fig.7).

There is no bone resorption 6 months post cementation (12 months postop, Fig.8,9).

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Xin Wei, DDS, PhD, MS 1st edition 07/25/2013, last revision 07/31/2015