Prosthodontics & Occlusion · single question

Where should the finish line of a full-coverage crown preparation ideally be placed?

1. At the base of the sulcus, near the epithelial attachment
2. 1 mm subgingivally, within the sulcus
3. Supragingivally, approximately 1 mm above the gingival margin
4. At the level of the free gingival margin

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