An osteotomy is initiated as palatal as possible and as close to the nasal floor as possible (Fig.5 ^). In spite of the fact that osteotomy site is underprep (in diameter), a 4.5x17 mm tap (Fig.6) is not stable.

Acute Episode

Xin Wei, DDS, PhD, MS 1st edition 11/17/2015, last revision 01/19/2018