The buccolingual width is wide (clinically, by palpation), although the mesiodistal distance is short (8 mm, Fig.2).  The gingiva to sinus floor distance is 7.64 mm, while the bone height is ~ 5 mm.

Reamers for Sinus Lift

Xin Wei, DDS, PhD, MS 1st edition 10/30/2014, last revision 10/30/2014