A space regainer is fabricated (Fig.9).  It is not completely seated when cemented, especially at H.  The wire holding open coil spring fractures next day.  It appears that H is not a good anchor with mobility II.   It should be extracted.  The mesial anchor will be the tooth #10.

Space & Underdeveloped Tooth Buds

Xin Wei, DDS, PhD, MS 1st edition 11/03/2016, last revision 11/03/2016