Question 204 · LDEK · Adhesive systems
Choose the true statements concerning the smear layer:
1) this is a loosely adherent layer formed during the cutting of dentin and relates to the cavities prepared in the tooth crown;
2) this is loosely adherent layer formed during the cutting of dentin and relates to the cavities prepared in the tooth crown and root canal walls;
3) this is a tightly adherent layer formed during the cutting of dentin and relates to the cavities prepared in the tooth crown;
4) formation of smear plugs is beneficial because of the blocking of dentinal tubules and the elimination of dentin hypersensitivity;
5) smear layer promotes adhesion of filling materials to the tooth.
The correct answer is:
2) this is loosely adherent layer formed during the cutting of dentin and relates to the cavities prepared in the tooth crown and root canal walls;
3) this is a tightly adherent layer formed during the cutting of dentin and relates to the cavities prepared in the tooth crown;
4) formation of smear plugs is beneficial because of the blocking of dentinal tubules and the elimination of dentin hypersensitivity;
5) smear layer promotes adhesion of filling materials to the tooth.
The correct answer is:
- A. 1,4.
- B. 1,5.
- C. 2,4.
- D. 2,5.
- E. 3,5.
Hint
Consider everywhere dentin gets cut during treatment, how firmly the debris layer sticks, and what it does to bonding.
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