Question 404 · LDEK · Cavity preparation
Why shouldn’t the demineralized carious tissue be left in the area of the dentine-enamel junction during the cavity preparation?
1) because none of the restorative materials forms a perfect cavity seal;
2) because the progress of caries will lead to the obliteration of dentinal tubules in the DEJ region;
3) because the carious disease will progress more rapidly;
4) because the tooth color can change.
The correct answer is:
2) because the progress of caries will lead to the obliteration of dentinal tubules in the DEJ region;
3) because the carious disease will progress more rapidly;
4) because the tooth color can change.
The correct answer is:
- A. 1,2.
- B. 1,3.
- C. 2,3.
- D. 2,4.
- E. 3,4.
Hint
Think about microleakage around any restoration and about how caries spreads laterally along the enamel-dentin junction.
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