Question 98 · LDEK · Cavity preparation
Which of the following statements concerning Black’s classification are true?
1) it does not cover root caries;
2) it does not cover secondary caries;
3) it does not cover non caries lesion (tooth wear);
4) changes in Stage 0 and Stage 1 (Sites/Stages - Si/Sta) are not included in Black’s;
5) cervical changes in the proximal surface are qualified by Black’s as class II (in lateral teeth) and class III (in anterior teeth).
The correct answer is:
2) it does not cover secondary caries;
3) it does not cover non caries lesion (tooth wear);
4) changes in Stage 0 and Stage 1 (Sites/Stages - Si/Sta) are not included in Black’s;
5) cervical changes in the proximal surface are qualified by Black’s as class II (in lateral teeth) and class III (in anterior teeth).
The correct answer is:
- A. 1,2,3,5.
- B. 1,3,5.
- C. 2,3,4.
- D. 3,4,5.
- E. all the above.
Hint
Black's system predates adhesive dentistry and is based on cavity location for amalgam; think about which situations it never addressed.
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