Causes and Risk Factors
Injuries to primary teeth usually results from falls and collisions as a young child (18 to 40 months of age) learns to walk and run.
Injuries to permanent teeth usually result from sport accidents and fights. School-aged boys suffer trauma almost twice as frequently as girls. The upper central incisors are the most commonly injured teeth; upper front teeth protruding more than 4mm appear 2 - 3 times more likely to suffer dental trauma than normally aligned teeth.