Page "lore" Paragraph 383

In the period from 10 to 14 the permanent set of teeth is usually completed, yet the continuing growth of bony tissue makes moving badly placed teeth comparatively easy.

Orthodontic work is possible because teeth are held firmly but not rigidly, by a system of peridontal membrane with an involved nerve network, to the bone in the jaw ; ;

they are not anchored directly to the bone.

Abnormal pressure, applied over a period of time, produces a change in the bony deposit, so a tooth functions normally in the new position into which it has been guided.