This injury is characterized by abnormal loosening of
the tooth but without displacement. Teeth are tender to
percussion and there may be some bleeding in the
gingival crevice. Prognosis for subluxation injuries is
good. Endodontic management is, however, sometimes
necessary.
Reported frequency of pulp necrosis ranges
from 6 to 17 per cent. Pulp canal calcification has been
reported to occur in 9 to 12 per cent of the cases and
progressive root resorption in less than 2 per cent.