It appears that the septum is ~ 6 mm in height (Fig.5).   Take a PA after extraction for exact measurement of the bone height.  A 2 mm pilot drill will be used to start osteotomy for 6 mm.  If the bone feels soft while drilling, osteotomes will be used for further osteotomy.  Otherwise, reamers will be used until 3.5 mm.  Then taps starting 4.5x14 mm until 7x14 mm will be inserted.  The depth will be sequentially increased while the diameter of the taps increases until 14 mm against the gingival margin.  The goal is to place a 7x14 mm tissue-level implant.  If the last tap (7x14 mm) is tight, a 7x12 mm bone-level implant may be tried.

Furcation of Upper 1st and 2nd Molars Last Next

Xin Wei, DDS, PhD, MS 1st edition 04/26/2015, last revision 10/21/2019