Question 220 · LDEK · Cavity preparation
Indicate the incorrect way of cavity opening and gaining access to the caries lesion located on the approximal surface of a posterior tooth:
- A. in each case - through the occlusal surface with removing of the marginal ridge.
- B. when the adjacent tooth is missing - through the direct access.
- C. when the lesion is large - by removing the marginal ridge.
- D. when the contact point is destroyed and the lesion extends towards the gingival margin - through the buccal or lingual surface, leaving the sound marginal ridge.
- E. through the occlusal surface, leaving the marginal ridge intact when the lesion is small.
Hint
Minimally invasive dentistry chooses the access route by lesion size and position — look for the option that ignores this.
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