The blood-vessel thrust theory of tooth eruption and migration.

The Blood-Vessel Thrust Theory is a new hypothesis regarding the forces which produce the normal eruption of teeth, and the movement of 'nonerupted' teeth through bone away from their normal position in the jaws. It points out that the flow of blood through the vessels of the dental pulp, and of the tissues surrounding the tooth, must produce hydrodynamic and hydrostatic forces within the blood vessels, and that these forces have a resultant towards the tooth crown, thus causing the tooth to move, crown first, through the bone during normal eruption or abnormal tooth migration.