680H
Fig. 12.11 Pulp canal obliteration and
external surface resorption of upper
primary central incisors after a luxation
injury.12.6.3 Root resorption
Extraction is advised for all types of root resorption where there is evidence of
infection (681HFig. 12.12).
682H
Fig. 12.12 External inflammatory
resorption of previously injured primary
incisors.12.6.4 Injuries to developing permanent teeth
Injuries to the permanent successor tooth can be expected in between 12% to 69% of
primary tooth trauma and 19% to 68% of jaw fractures. Intrusive luxation causes most
disturbances but avulsion of a primary incisor will also cause damage if the apex
moved towards the permanent tooth bud before the avulsion. Most damage to the