After pontic removal (Fig.4 black area) and incision, use #15 scalpel, bone scalpels and bone blades to start bone expansion (red line).  L: lingual (plate); B: buccal.

Narrow Crest with Low Bone Density

Xin Wei, DDS, PhD, MS 1st edition 09/26/2015, last revision 09/26/2015