Crown lengthening is a minor gum procedure that exposes more of the natural tooth by adjusting the level of the gum, and sometimes the bone underneath. It is used in two quite different situations: to even out a gummy smile for cosmetic reasons, and to give a dentist enough sound tooth to place a filling or crown when decay or a fracture sits close to the gum line. The same procedure name covers both, which is why patients are often confused about what it actually involves.
This guide explains both uses in plain terms, what the procedure feels like, how long recovery takes, and how to decide whether it is the right step for you.
Key takeaways
- Crown lengthening exposes more tooth by reshaping gum, and sometimes bone, around it.
- Cosmetic crown lengthening evens out a gummy smile or uneven gum line.
- Functional crown lengthening provides enough tooth structure to restore a tooth that has broken or decayed near the gum.
- It is usually a quick procedure under local anaesthetic with a short recovery.
- Final crowns or veneers are placed only after the gums have settled, which can take several weeks.
The one thing that decides the approach
The deciding question is simple: are we reshaping for looks, or to reach more tooth? Cosmetic cases focus on the visible gum line of the front teeth and aim for symmetry. Functional cases focus on a single damaged tooth and aim to expose enough solid structure for a restoration to grip. The surgery is similar, but the planning and the goal are different.
Cosmetic crown lengthening for a gummy smile
Some people feel their teeth look short or that too much gum shows when they smile. Often the teeth are a normal size but are partly covered by gum tissue. Cosmetic crown lengthening removes a measured amount of excess gum, and reshapes the bone if needed, so more of each tooth shows and the gum line runs evenly across the smile.
It is frequently combined with veneers or bonding to finish the result, and it pairs naturally with a smile makeover. Where the gumminess comes mostly from a hyperactive lip or jaw position rather than excess gum, other treatments may suit better, which is why an assessment matters. Our guide to gummy smile treatment covers the full range.
Functional crown lengthening
When a tooth breaks at the gum line, has decay running under the gum, or has very little height left, there may not be enough sound tooth above the gum to hold a filling or crown. Functional crown lengthening lowers the gum and bone slightly to expose more of the tooth, restoring what dentists call the ferrule, the band of solid tooth a crown needs to grip. This can be the difference between saving a tooth and losing it. It is often discussed alongside crowns and other restorations and sometimes root canal versus extraction decisions.
What the procedure involves
Crown lengthening is usually done under local anaesthetic in a single visit. After numbing the area, the gum is gently lifted, a small amount of gum and, where needed, bone is reshaped, and the gum is repositioned and may be secured with fine stitches. Most cases take 30 to 60 minutes depending on how many teeth are involved.
| Stage | What happens | Typical timing |
|---|---|---|
| Assessment | Examination, X-rays, smile photos, planning | First visit |
| Procedure | Gum and bone reshaped under local anaesthetic | 30 to 60 minutes |
| Early healing | Soft tissue settles, stitches removed if used | 1 to 2 weeks |
| Final restoration | Crown, veneer, or filling placed once gums are stable | 6 to 12 weeks later |
Recovery and aftercare
Most people manage with simple pain relief such as paracetamol and are back to normal activities the next day. Expect some tenderness, mild swelling, and a different look to the gum while it heals. Keep the area clean with gentle brushing, use any prescribed rinse, eat softer foods for a few days, and avoid disturbing the site. The gum needs several weeks to mature before final cosmetic work, so the wait before a veneer or crown is deliberate, not a delay.
What it costs
Fees depend on how many teeth are treated, whether bone is reshaped, and whether a specialist periodontist is involved. As a general guide across the Australian market, single-tooth functional crown lengthening sits in the lower hundreds of dollars, while multi-tooth cosmetic cases cost more, and the final crowns or veneers are charged separately. We do not list our own prices here. For a figure matched to your situation, our team can provide a written quote. See current options on our offers page or book through contact us.
Frequently asked questions
Is crown lengthening painful?
The procedure itself is done under local anaesthetic so you should not feel pain during it. Afterward there is usually mild tenderness that simple pain relief manages well.
How long until I can have my veneers or crown?
Usually six to twelve weeks. The gum needs time to settle into its final position so the restoration margins sit correctly and look natural.
Will my gums grow back over the tooth?
When bone is reshaped appropriately, the new gum level is generally stable. Good oral hygiene helps keep it that way.
Is it the same as gum contouring?
Simple gum contouring reshapes only soft tissue. Crown lengthening goes further and adjusts bone when needed, which makes the result more stable for larger changes or restorations.
Can I have it on a single broken tooth?
Yes. Functional crown lengthening on one tooth is common and is often what makes saving a badly broken tooth possible.
The takeaway
Crown lengthening is a versatile procedure that either refines a smile or rescues a tooth, depending on why it is done. If you have been told a tooth needs more structure before a crown, or you are unhappy with how much gum shows when you smile, an assessment will tell you whether it is the right option. Our team at Lumi Dental can talk you through it and provide a written quote. Start on our current offers page or read about crowns versus veneers.
This article is general information and not a substitute for an individual dental assessment.
