Question 82 · LDEK · Trauma to permanent teeth
Find true sentences on the intentional decoronation of a tooth after injury:
1) can be performed in the case of root ankylosis in patients at developmental age;
2) can be performed in the case of root ankylosis only in adult patients;
3) its aim is to preserve the alveolar bone which may be essential if an osseointegrated implant is required in adulthood;
4) consists in cutting off the tooth crown and removing 1 mm of the alveolar bone;
5) consists in cutting off the crown coronally with relation to the enamel and cementum junction.
The correct answer is:
2) can be performed in the case of root ankylosis only in adult patients;
3) its aim is to preserve the alveolar bone which may be essential if an osseointegrated implant is required in adulthood;
4) consists in cutting off the tooth crown and removing 1 mm of the alveolar bone;
5) consists in cutting off the crown coronally with relation to the enamel and cementum junction.
The correct answer is:
- A. 1,3,5.
- B. 2,3,5.
- C. 2,4.
- D. 1,3,4.
- E. 1,5.
Hint
Decoronation is done in growing patients to preserve bone height; consider where the root is cut relative to the bone crest.
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