Question 267 · LDEK · Post and core restorations
Tooth 21 with previous root canal treatment and preserved crown. Post and core with subsequent ceramic crown are planned. The procedure should start with:
- A. placing the retraction cord.
- B. shortening the clinical crown up to the gingival margin.
- C. taking the impression of the upper arch with highly resilient silicone impression material.
- D. removing all restorations from the clinical crown.
- E. preparation of the root canal.
Hint
Before deciding how much tooth structure is available for a ferrule, you must see what is really left of the crown.
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