Important distinction: Gum contouring may mean minor soft-tissue reshaping or surgical crown lengthening involving bone. The correct procedure depends on the cause of the gum level, not on the desired photograph alone.
What is gum contouring?
Gum contouring changes the outline of the gingival margin around one or more teeth. It may remove excess tissue, balance asymmetric margins or form part of restorative crown lengthening. Clinicians may use a scalpel, electrosurgery or a dental laser. The instrument does not determine the diagnosis or make the procedure biologically safe by itself.
Why do gums look uneven or prominent?
Causes include altered passive eruption, tooth wear, tooth position, short clinical crowns, inflammation, medication-related enlargement, lip movement and skeletal jaw relationships. A “gummy smile” can have more than one cause. Removing gingiva when lip or skeletal factors dominate may produce limited benefit or expose roots.
Assessment before treatment
The dentist or periodontist measures probing depths, gum thickness, tooth proportions and the relationship between the gum margin, bone crest and planned restoration. Photographs and scans document symmetry. Bone sounding or imaging may be required in selected cases. Active gingivitis should be treated before aesthetic reshaping.
Gingivectomy versus aesthetic crown lengthening
A gingivectomy removes soft tissue when enough healthy attachment and distance from bone will remain. Aesthetic crown lengthening may raise a flap and reshape supporting bone to establish a stable relationship between the restoration margin, attachment and bone. If only soft tissue is removed when bone is too close, rebound or chronic inflammation may occur.
Laser gum contouring
Lasers can cut and coagulate soft tissue and may reduce bleeding during appropriate procedures. They do not remove the need for measurements, anaesthesia or healing. Different wavelengths interact differently with tissue, and some cases still require conventional flap and bone surgery. “Laser” should not be used as a substitute for naming the actual procedure.
The procedure
After local anaesthesia, the planned margin is marked and tissue is reshaped conservatively. When bone correction is necessary, a flap provides access before the tissue is repositioned and sutured. Temporary restorative contours may guide healing. Definitive veneers or crowns should wait until the gum position is sufficiently stable for the case.
Recovery
Minor soft-tissue contouring may cause tenderness and swelling for several days. Surgical crown lengthening generally has a longer healing course. Follow the clinician's cleaning, mouth-rinse and medication instructions; avoid smoking and trauma to the site. Bleeding that does not stop, increasing swelling, fever or severe pain requires prompt review.
Risks
Risks include pain, bleeding, infection, recession, root sensitivity, longer-looking teeth, asymmetry, tissue rebound, altered papillae and black triangles. Bone removal is irreversible. Treatment near front teeth requires careful timing because the final margin can continue to mature after the first weeks.
Alternatives
Depending on cause, alternatives or combined care may include professional cleaning, orthodontic intrusion or extrusion, restorative length changes, lip repositioning, botulinum toxin treatment or orthognathic evaluation. Botulinum toxin effects are temporary and depend on muscle-related diagnosis; they do not correct altered passive eruption or bone relationships.
Questions to ask
- What is the diagnosed cause of the excessive or uneven display?
- Will bone be removed, and why?
- How much attached tissue will remain?
- When will the final restorative margin be considered stable?
- Who will manage recession, sensitivity or rebound after travel?
Biological width and supracrestal tissue attachment
The tissue between the base of the gum sulcus and supporting bone forms a protective attachment around the tooth. Modern terminology often calls this the supracrestal tissue attachment. Placing a restoration margin or leaving a surgical gum edge too close to bone can provoke inflammation, discomfort or tissue migration. Measurements are therefore more important than an attractive line drawn on a photograph.
Gum contouring before veneers or crowns
When restorations are planned, the final tooth proportions should be designed before surgery. The periodontist needs to know where the future edges and contacts will be, while the restorative dentist needs a stable healed margin for accurate impressions. Temporary restorations can guide tissue, but over-contoured temporaries may inflame it. The sequence is interdisciplinary rather than simply “laser first, veneers tomorrow.”
How long must gums heal?
Surface comfort often improves well before tissue maturation is complete. Healing time depends on whether only a small amount of soft tissue was reshaped or a flap and bone surgery were performed, as well as tissue thickness and tooth location. Anterior restorative margins may be delayed for weeks or months when stability is critical. A provider should explain the provisional phase instead of promising one universal timeline.
Gum symmetry and facial reference lines
Perfect mirror symmetry is not always natural. Dentists compare gingival zeniths, tooth axes, incisal edges, smile line and lip movement. Correcting one margin without considering tooth length or root position can make the neighbouring tooth look short. Digital planning can assist, but probing and bone measurements remain necessary.
Electrosurgery, scalpel and laser compared
A scalpel provides precise incision and produces thermal-free edges but may bleed more during surgery. Electrosurgery and lasers can aid haemostasis, yet excessive heat can delay healing or injure adjacent structures. The operator, indication and settings influence outcome more than the marketing label. Bone surgery still requires instruments appropriate to hard tissue.
Smoking, diabetes and healing
Smoking can impair blood supply and healing and may worsen periodontal outcomes. Poorly controlled diabetes and other systemic conditions can also affect infection risk and repair. Medication history matters because anticoagulants, immunosuppressants and drugs associated with gingival enlargement may change planning. Prescribed medicines should not be stopped without the relevant clinician.
Travel planning and postoperative access
Patients travelling for gum surgery need enough time for an early review, suture management where applicable and control of bleeding or infection. Flying itself is not the main issue in ordinary soft-tissue surgery; loss of access to the operating team is. Obtain written procedure details, bone involvement, medication instructions, emergency contacts and the intended date for definitive restorative work.
Frequently asked questions
Does the gum grow back?
Some rebound can occur, particularly if the underlying bone relationship was not addressed or tissue was inflamed. Stability depends on diagnosis and technique.
Is it painless?
Local anaesthesia controls procedural pain, but postoperative tenderness is expected. Extent and bone involvement affect recovery.
Can contouring fix every gummy smile?
No. Lip mobility, jaw position and tooth eruption must be evaluated before selecting gum surgery.
Sources and clinical review references
- Abou-Arraj RV, et al. Open-flap versus flapless aesthetic crown lengthening. Systematic review and meta-analysis. 2025.
- Wang X, et al. Botulinum toxin dose and injection site for gummy smile. Toxicon. 2024.
- Cairo F, et al. Predictability of complete root coverage in RT2 recession. Systematic review. 2021.
Content status: editorial draft for review by a licensed dentist before publication. Last evidence check: 22 July 2026.