In fact impression for models (Fig.3-7) is taken after UL caries control.  Sedative filling is done at UL1,3 (Fig.6 *) and definitive restoration will be done when crowding resolves.  The defects at UL6,7 (Fig.6 x) is so extensive that after composite molar bands are placed immediately for retention.  Amazingly, there is no symptom after UL6,7 restoration.  Therefore UL4 will be extracted instead for crowding resolution.

Which Teeth to be Extracted Last Next

Xin Wei, DDS, PhD, MS 1st edition 08/22/2018, last revision 09/09/2018