REMOVAL OF REMAINING CARIOUS DENTIN OR OLD RESTORATIONS:

It is the elimination of any infected carious tooth structure or faulty restorations left in the tooth after initial cavity preparation.

Caries left in the pulpal/ axial floor is excavated thoroughly making the cavity deeper. 0.75- 1 mm of dentin should cover the pulp. All the infected/ soft dentin should be removed.

Old restorative material should be removed if:

  1. The material may negatively affect the esthetic result of the new material.
  2. It weakens the needed retention.
  3. Secondary caries is present.
  4. Tooth pulp is symptomatic.
  5. Periphery of the old restorative material is not intact.

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