lForce for eruptive tooth movement resides in periodontal ligament which pulls the tooth out
lExperiment by interfering with collagen synthesis by denying Vit C or by injecting latharytic agent slows down or stops tooth movement.
lIn a continuously erupting tooth (e.g. rodent
incisor), is cut and a barrier is placed between 2 halves, the distal half continues to erupt in spite of dissociating from the growing root and apical