Before impression, the mesial surface of the original 1st bicuspid is trimmed (Fig.6 pink dashed lines) so that the new 1st bicuspid (#12) can be moved distally (red arrow).  *: pink porcelain.

Large Pink Porcelain/Small Teeth

Xin Wei, DDS, PhD, MS 1st edition 06/10/2017, last revision 06/10/2017