Correction of Lower Tooth Supraeruption Part I

Twenty-seven-year-old Mickey has short clinical crowns in the maxilla (Fig.1).  Two of the premolars (#4,5) have severe caries.  When immediate implants were placed (Fig.2: I), there is no room to install abutments, probably due to the supraeruption of the opposing teeth (Fig.2 arrows).  Three mini-implants (2 buccal (Fig.2), one lingual (Fig.3 <) were placed for intrusion. 

But the lingual mini-implant fell out several times.  What should we do?

Xin Wei, DDS, PhD, MS 1st edition 11/26/2013, last revision 11/26/2013