Question 323 · LDEK · Pulp chamber and root canal anatomy
Indicate the true statements on the anatomy of the apical root:
1) apical foramen usually exists in the anatomic apex;
2) apical foramen does not usually exist in the anatomic apex;
3) in old teeth through cementum apposition the distance between AF and the anatomic apex diminishes;
4) in old teeth through cementum apposition the distance between AF and the anatomic apex increases;
5) distance between AF and the anatomic apex ranges from 0.5 mm to 3 mm;
6) distance between AF and the anatomic apex ranges from 0.8 mm to 5.5 mm.
The correct answer is:
2) apical foramen does not usually exist in the anatomic apex;
3) in old teeth through cementum apposition the distance between AF and the anatomic apex diminishes;
4) in old teeth through cementum apposition the distance between AF and the anatomic apex increases;
5) distance between AF and the anatomic apex ranges from 0.5 mm to 3 mm;
6) distance between AF and the anatomic apex ranges from 0.8 mm to 5.5 mm.
The correct answer is:
- A. 1,3,5.
- B. 1,4,6.
- C. 2,4,5.
- D. 2,3,5.
- E. 2,3,6.
Hint
Consider where the canal usually exits relative to the root tip and how cementum deposition with age changes that relationship.
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
- Indicate the true statements concerning enamel adhesion:
- Indicate the false statement concerning sensory innervation of the periodontal ligament:
- What is the most effective hand method of cleaning and shaping curved and calcified canals?
- Which of the following concerning pre-wedging technique is false?
- Indicate the true statements regarding the preparation of root canals with the step-back technique:
- Match the following characteristics of the pulp stone with its type: