TYPES OF TOOTH MOVEMENTS

Can be categorized into 3 categories-

  • Pure translation- intrusion and extrusion, bodily movement
  • Pure rotational- torquing and tipping
  • Generalized rotational

1. Tipping- single force applied results into movement of crown in direction of force and movement of root in opposite direction.

A) Controlled tipping- When tooth tips about centre of rotation at apex. Lingual movement of crown with minimal movement of root in opposite direction.

B) Uncontrolled Tipping- when movement of tooth occurs about centre of rotation close to centre of resistance. Crown moves in lingual direction and root in opposite direction.

2.Torquing – reverse tipping characterized by lingual movement of root.

3. Bodily movement- All points on tooth will move equal distance in the direction of applied force. Line of action of force is through centre of resistance.

3. Intrusion- bodily displacement of tooth in apical direction along longitudinal axis of tooth.

4. Extrusion- bodily displacement of tooth in coronal direction along longitudinal axis of tooth.

5. Rotational- labial or lingual movement of tooth around long axis

6. Uprighting- when crowns are tipped in mesiodistal direction roots tipped in opposite direction. Tipping the roots back to get parallel orientation is called uprighting.

Reference- ortho bhalajhi

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