Migration and Transmigration of Teeth

Migration of teeth

 * Is the tooth movement occuring AFTER tooth eruption


 * Causes:
 * 1) Periodontal disease
 * 2) Occlusal trauma


 * Factors that influence their movement:
 * 1) Masticatory forces
 * 2) Tongue forces
 * 3) cheeks
 * 4) Lips


 * Manifestation:
 * 1) Rotation
 * 2) Diastema
 * 3) Extrusion, intrusion
 * 4) Proclination

Transmigration

 * Tooth movement BEFORE tooth eruption


 * The tooth moves inside the mandible (or maxilla), like a "Tunnel Boring Machine"


 * As a result the tooth might erupt in a wrong place (transposition or ectopy) or even remain under the bone (impacted)


 * More commonly seen in mandibular permanent canines