The distal surface of the provisional will be reduced (Fig.9 D), whereas the occlusal surface will be increased (O).  If needed, the occlusal surface of the distalized tooth #4 will be reduced (Fig.9 red area) so that there is no interference for tooth to move. 


Xin Wei, DDS, PhD, MS 1st edition 03/01/2015, last revision 03/01/2015