Fig.7: This X-ray is taken prior to #5 extraction.  The bone height at the site of #2 is estimated 12 mm.  The center of the osteotomy is estimated 4.5 mm from the distal surface of the 1st molar.

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Xin Wei, DDS, PhD, MS 1st edition 04/06/2013, last revision 01/19/2018