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Periapical radiograph of tooth 11 which had been avulsed and replanted within a few minutes. This radiograph was taken 3 years after the injury and it shows an area of ankylosis (i.e. no periodontal ligament) but there is no external replacement resorption at this stage. The arrow indicates the region of ankylosis on the distal aspect of the cervical third of the root. This tooth also had reduced mobility and the typical percussion sound of ankylosis
