Question 56 · LDEK · Cavity preparation
Indicate the proper ways of gaining access to a caries lesion on the approximal surface of a posterior tooth:
1) via buccal or lingual surface when the contact point is destroyed and the caries extends towards the gingival end, leaving a sound marginal ridge;
2) from the occlusal surface, leaving the marginal ridge intact;
3) through removing the marginal ridge when the lesion is large;
4) through direct access if the adjacent tooth has been extracted.
The correct answer is:
2) from the occlusal surface, leaving the marginal ridge intact;
3) through removing the marginal ridge when the lesion is large;
4) through direct access if the adjacent tooth has been extracted.
The correct answer is:
- A. 1,2,4.
- B. 1,3,4.
- C. 1,2,3.
- D. 2,3,4.
- E. all the above.
Hint
List every access route described for approximal lesions in posterior teeth: slot, tunnel, classical box and direct access.
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