The lady has taken Fosamax for osteoporosis several years.  The medicine may cause osteonecrosis.  CBCT study does not show sign of osteonecrosis apparently.   Since the ridge at #19 is narrow (Fig.8), it is reasonable to have a premolar there after ridge trimming.

Implants Change Occlusion Classification Last Next

Xin Wei, DDS, PhD, MS 1st edition 01/18/2017, last revision 05/31/2020