Crown Lengthening Calculator

It compares the amount of additional crown length needed against the biologic width you specify. When the desired crown length is only a little more than the current one, the gingiva alone can often be reshaped without touching bone (gingivectomy). When more length is needed, exposing that much tooth structure while preserving biologic width requires removing some alveolar bone as well, which is the more involved osseous surgery.

This calculator estimates a shorter soft-tissue healing period for a gingivectomy than for osseous surgery, since osseous surgery disturbs both bone and soft tissue and both need to heal and remodel. It also recommends waiting longer before placing the final restoration after osseous surgery, since the gingival margin continues to mature and can shift position for weeks after bone is removed.

No. The number of teeth involved scales the total estimated cost and factors into the aesthetic-risk flag for multi-tooth anterior cases, but it does not change whether a gingivectomy or osseous surgery is recommended -- that decision comes purely from the crown-length gap and the biologic width you specify, applied per tooth.

Biologic width is the soft-tissue attachment -- roughly 2mm of junctional epithelium and connective tissue -- that reforms just above the bone after surgery. Encroaching on that space with a restoration margin is a well-documented cause of chronic gum inflammation, so this calculator compares the crown-length gap against the biologic width you specify: only once the gap exceeds that margin does bone need to come down, and the amount removed is the gap in excess of the biologic width, keeping the margin clear of the restoration once bone is removed.