The intrusion of a permanent central incisor can cause 1. laceration of the periodontal membrane. 2. loss of pulp vitality. 3. ankylosis. 4. root resorption. 5. discoloration of the tooth.
All of the above.
(1) (3) (4)
(1) (2) (5)
(2) (4) (5)
None of the above.
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