After 2.2x10 mm drill at #31 (Fig.1), bone expansion is conducted with 1.7/3.1 mm and 2.4/3.7 mm Expanders with guide (Fig.2) and 3.0/4.4 mm one without guide. 

Post-Implant Bone Graft Last Next

Xin Wei, DDS, PhD, MS 1st edition 08/01/2019, last revision 08/01/2019