|
|
|
When the opposing permanent crown is cemented, the already turned crown (Fig.6 curved arrow) has no occlusal contact. The mesial clearance for pick up impression is limited. The crown has to be removed for further reduction of the mesial surface. In fact the crown before turning has no mesial contact; the model is taken for #30 crown fabrication (Fig.6').
Xin Wei, DDS, PhD, MS 1st edition 03/16/2021, last revision 03/19/2021