Question 448 · LDEK · Cavity preparation
From the following factors select those which determine the shape of the resistance form obtained during the preparation of a caries cavity for amalgam filling:
1) dentine support of the enamel;
2) slightly convergent configuration of the walls towards the inlet of the cavity;
3) filling thickness proportional to its surface extensiveness;
4) elimination of right and acute angles;
5) additional cuts in the form of grooves and slots.
The correct answer is:
2) slightly convergent configuration of the walls towards the inlet of the cavity;
3) filling thickness proportional to its surface extensiveness;
4) elimination of right and acute angles;
5) additional cuts in the form of grooves and slots.
The correct answer is:
- A. 1,2,3.
- B. 1,3,4.
- C. 1,3,5.
- D. 2,3,4.
- E. 2,4,5.
Hint
Separate features that protect tooth and filling from fracture (resistance) from those that stop the filling falling out (retention).
The answer, the explanation and a note on every option are available once you log in. The account is free: topic tests, a mock exam, mistake review and statistics.
More questions on Conservative dentistry
- The mechanism of GLUMA desensitizer action is based on:
- The presence of the so-called „cervical burnout” on dental radiographs indicates:
- Which of the below mentioned root canal irrigants can be used as last due to its prolonged antibacterial activity?
- A young patient reported to the dentist for conservative treatment of tooth 37. Examination showed soft, reddish, cauliflower-like lesion protruding…
- Which of the below mentioned conditions is an indication for indirect pulp capping, on the assumption that there is a normal response to pulp…
- What material can be applied directly to the pulp in a case of pulpotomy?