Table 1 Classification of the traumatic injuries according to Andreasen and Andreasen (1994)

I. Injuries to the hard dental tissues and pulp

Enamel fracture

Enamel–dentine fracture

Complicated crown fracture

II. Injuries to the hard dental tissue, pulp and alveolar process

Crown–root fracture

Root fracture

Alveolar fracture

III. Injuries to the periodontal tissues

Concussion

Subluxation

Luxation injuries

Lateral luxation

Intrusion

Extrusion

Avulsions