Tooth eruptionultra-low power section of developing jaw

Key: 1 = milk teeth; 2 = developing adult teeth; 3 = jaw bone; 4 = gum

1 mm

1 1

2

2 2

3

33

4

4

Tooth eruption

Osteoclasts erode jaw bone to make way for erupting adult tooth

Are hypoxia and acidosis involved in mediating tooth eruption and orthodontic tooth movement ?

Pressure from advancing tooth causes partial constriction of capillaries in periodontal

ligament

‘Trabecular’ bone nodules formed by primary osteoblasts

5 mm