An intruded tooth is driven into its socket, causing a crushing fracture of alveolar bone.
Cameron, Angus. Handbook of Pediatric. 2nd. United States: Mosby, 2003.
American Association of Endodontists. Recommended Guidelines of the American Association of Endodontists for the Treatment of Traumatic Dental Injuries. Chicago; 2004.
American Academy of Pediatric Dentistry. Guideline on Management of Acute Dental Trauma. Pediatric Dentistry 2009; 31(6):187-195.