It appears that the abutments (#29 and 31) have periapical radiolucency (Fig.3*).  Possible implant infection will be emphasized.  Since the opposing tooth (#3 in Fig.1) is supraerupted, Magicore (implant) will be tried.  The initial depth is 9 mm after testing for bone density.  The latter seems to be low.  If it is true, BEB (bone expansion and bending) technique will be adopted.

Magicore

Xin Wei, DDS, PhD, MS 1st edition 10/29/2016, last revision 10/29/2016