What Is an Impacted Canine?
An impacted canine is a permanent canine tooth that fails to erupt on schedule. Instead of emerging into the mouth by age 13, it remains trapped beneath the gum or bone. It's a common orthodontic problem affecting about 2% of the population.
Location: Impacted canines occur primarily on the upper teeth (about 85% of cases), more often on the outside (labial side) than inside (palatal side).
Why Canines Get Impacted
| Cause | Explanation | Frequency |
|---|---|---|
| Lack of space | Other teeth take up the canine's eruption path | Most common |
| Crowding | Severe crowding prevents normal eruption | Very common |
| Abnormal root development | Canine root forms in wrong direction | Moderate |
| Missing lateral incisor | Gap where lateral incisor should be | Common |
| Supernumerary teeth | Extra teeth block the canine's path | Less common |
| Genetic predisposition | Runs in families | Moderate |
| Thick overlying bone/gum | Canine physically blocked from erupting | Moderate |
Detecting an Impacted Canine
Obvious signs: - Canine tooth doesn't appear by age 13–14 (very obvious) - Small bulge under the gum where canine should be - Siblings had impacted canines (genetic pattern) - Existing crowding/overlap of other teeth
How orthodontists find them: - Panoramic X-ray (standard at orthodontic evaluation) - Shows impacted canine clearly on X-ray - Shows exactly where it is positioned (critical for treatment planning) - 3D CBCT scan (if needed for surgical planning)
Treatment: Why Braces + Surgery Needed
An impacted canine can't be corrected with braces alone. Here's why:
The tooth is physically stuck. Braces can't pull it up through bone and gum. Instead, a two-phase approach is needed:
Phase 1: Surgical Exposure Oral surgeon exposes the impacted canine by removing overlying gum and bone, making it accessible.
Phase 2: Orthodontic Traction Orthodontist attaches a special wire/bracket to pull the exposed canine into the dental arch.
Treatment Timeline and Process
Pre-surgical (Months 1–3): Pre-braces - Initial orthodontic visit - Full evaluation including X-rays and planning - Often start braces to create space for the impacted canine - Create ideal path for canine to erupt into
Surgical visit (Month 3–4): Exposure Surgery - Oral surgeon makes small incision in gum - Removes bone/gum covering the impacted canine - Options: - Expose and bond: Small attachment bonded to exposed canine for traction - Expose and suture: Canine left partially exposed to erupt naturally while monitored - Recovery: 1–2 weeks for swelling to resolve - Cost: $1,000–$2,500
Post-surgical (Months 4–18): Traction Phase - Orthodontist attaches wire/chain to surgical attachment - Gentle, consistent pulling of canine into position - Monthly appointments to adjust force - Duration: 12–18 months depending on how far canine must travel - Discomfort: Mild; significantly less than general braces pain
Final Phase (Months 18–24): Fine-tuning - Once canine is in position, orthodontist aligns it with other teeth - Complete full bite correction - Duration: 6–12 months additional - Total time: 24–36 months from start to finish
Surgical Exposure Options
Option 1: Expose and Bond (Most Common) - Surgeon exposes tooth and bonds a small attachment to it - Orthodontist uses traction wire/elastic to pull canine - More predictable movement - Faster canine positioning
Option 2: Expose and Suture (Alternative) - Surgeon exposes tooth but pulls gum back over it - Tooth partially exposed; encouraged to erupt naturally - Less invasive - Slower movement
Option 3: Expand Alveolus (Rarely Used) - Surgeon widens the bone ridge - Creates larger space without moving other teeth - Usually combined with other methods
Pain and Recovery
During surgery: You're numb; no pain (local anesthesia typical; IV sedation optional)
After surgery (first week): - Mild pain (not severe; controlled with ibuprofen) - Swelling: Maximum day 2–3 - Bruising: Possible - Stitches: Usually dissolve in 7–10 days - Most people return to normal activity within 3–4 days
During traction phase: Minimal discomfort; teeth being pulled, not the surgery site
Eating: Soft foods first week; normal eating by week 2
What Makes Treatment More Complex
Factors increasing treatment complexity: - Canine severely impacted (far from normal position) - Multiple impacted teeth - Severe crowding - Severe bite problems requiring correction - Canine very deep in bone - Bone extraction may be needed
Factors simplifying treatment: - Moderate crowding only - Canine relatively close to surface - No other bite problems - Single impacted canine
Cost Breakdown
Pre-surgical braces: $2,000–$4,000
Surgical exposure: $1,000–$2,500 (sometimes covered by medical insurance if deemed medically necessary)
Orthodontic traction and completion: $2,000–$4,000 (included in braces cost if done by same orthodontist)
Total: $5,000–$10,500 (sometimes reduced if insurance covers surgical aspect)
Insurance: Impacted canine treatment sometimes qualifies as medically necessary (not purely cosmetic). Coverage varies; check with your insurance.
Success Rates
Successful eruption and positioning: 95%+ with surgical exposure + orthodontics
Complications: - Root resorption (tooth root shortening from excessive force): 5–10% of cases (usually minor) - Re-impaction (canine going back under): Rare if retainers are worn - Infection: Rare with proper post-op care - Loss of adjacent teeth: Very rare
Life After Impacted Canine Treatment
Retention is critical: Your exposed/moved canine is at higher risk of relapse.
Long-term retention (longer than standard braces): - Bonded retainer on canine (permanent or very long-term) - Nightly removable retainer (10+ years, possibly forever) - More frequent monitoring (annual orthodontist visits)
Functional outcome: Successfully erupted and positioned canine functions normally in chewing and bite.
Aesthetic outcome: Beautiful smile with properly positioned canine tooth (canines are important for smile esthetics).
Alternative: Extraction
In rare cases where canine cannot or should not be moved:
Extraction of impacted canine + use of neighboring tooth - First premolar assumes canine function - Canine is removed - Orthodontically simpler - Cosmetically less ideal - Reserved for very difficult cases
Most orthodontists prefer exposing and moving the canine (preserves natural tooth).
Key Takeaway
Impacted canines affect 2% of people and require surgical exposure plus orthodontic traction to successfully position. Treatment takes 24–36 months total and costs $5,000–$10,500. Success rates are excellent (95%+) with proper treatment and lifelong retention.
If you or your child has an impacted canine, don't panic. This is a common, very treatable problem. Early intervention (during orthodontic development, ages 12–14) provides the best prognosis.
The surgical exposure is not painful, the traction phase is straightforward, and the end result is a beautiful, functional tooth in its proper position. Treatment is worth the time and cost.