✍️ Authored by: Dr. Aykut Gürel — Specialist in Oral, Dental and Maxillofacial Surgery 10+ years of clinical experience, 3,000+ successful surgical cases. Specialized in nerve-related impacted wisdom teeth, coronectomy and complex extraction techniques. Last updated: 7 May 2026
What Is Coronectomy? — 60-Second Answer
- Definition: Removal of the crown of an impacted wisdom tooth while leaving the roots intentionally in the jawbone
- Purpose: To prevent damage to the inferior alveolar nerve (IAN)
- Indication: When tooth roots are in direct contact with or wrapped around the IAN
- Diagnosis: Decided based on 3D dental tomography (CBCT)
- Risk reduction: Nerve damage risk drops from ~20 % (in classic extraction of high-risk teeth) to < 1 %
- Success rate: ~95 % long-term success in major systematic reviews
💡 Important: Coronectomy is not used in every wisdom tooth case — it is reserved for high nerve-injury risk situations identified by CBCT. Most impacted wisdom teeth are extracted classically.
Why Is Coronectomy Performed?
The inferior alveolar nerve travels through the lower jaw inside the mandibular canal. It supplies sensation to the lower lip, chin, lower teeth and gums. In high-risk wisdom teeth, the roots may:
- Sit directly adjacent to the canal
- Wrap around the canal
- Pass through the canal
In such cases, classical extraction can lead to:
- Permanent lip / chin numbness
- Tingling sensation (paresthesia)
- Burning sensation (dysesthesia)
- Loss of taste sensation
Coronectomy bypasses this risk by leaving the root section that is in contact with the nerve untouched in place.
When Is Coronectomy Recommended?
CBCT findings — the gold-standard signs:
| CBCT Finding | Risk Level |
|---|---|
| Roots crossing the mandibular canal | Very high |
| Roots wrapping around the canal | High |
| Roots displacing the canal | High |
| Loss of canal cortical wall on the radiograph | High |
| Darkening of root tip on panoramic | Moderate (CBCT confirms) |
When CBCT identifies these, the surgeon discusses with the patient: (a) classical extraction with nerve risk, or (b) coronectomy with high safety + need for follow-up.
Coronectomy Surgical Steps
1. CBCT-Based Planning
- 3D analysis of nerve relationship
- Decision whether to coronectomize or fully extract
- Pre-operative consent — explanation of nerve risks and outcomes
2. Local Anesthesia + Sedation (Selected Cases)
- Local anesthesia is enough for most patients
- Sedation may be added for anxious or longer cases (detail)
3. Incision and Bone Removal
- Mucoperiosteal flap reflected
- Bone covering the crown is selectively removed
4. Crown Sectioning
- The crown is sectioned 3–4 mm below the cemento-enamel junction (CEJ)
- Critical: roots should not be moved
- Crown is removed in pieces
5. Root-Surface Smoothing
- The remaining root surface is smoothed
- Root level is reduced to be 2–3 mm below alveolar crest (for predictable bone coverage)
6. Closure
- Flap repositioned
- Sutures (typically resorbable)
- A clot forms over the root, bone heals over it within 6–12 months
7. Follow-Up
- 1-week suture check
- 6-month panoramic x-ray
- Long-term annual review
Coronectomy vs Classical Extraction
| Criterion | Coronectomy | Classical Extraction |
|---|---|---|
| Roots removed | Crown only | All of the tooth |
| IAN damage risk | < 1 % | 5–20 % (high-risk teeth) |
| Operative time | 30–45 min | 30–60 min |
| Healing time | 6–8 weeks | 6–8 weeks |
| Long-term root status | Stays in bone, gradually moves cervical-ward | N/A |
| Re-operation rate | 2–3 % (root migration / infection) | N/A |
| Long-term success | ~95 % | ~98 % |
What Happens to the Roots Long-Term?
A common concern: "Won't the roots cause problems?" Long-term studies show:
- Bone heals over the root within 6–12 months
- The root may migrate cervical-ward by 2–4 mm in the first year (away from the nerve)
- Migration is beneficial — it moves roots away from the canal
- Late infection rate: < 5 %
- Late re-extraction rate: 2–3 % (if migrated roots cause issues)
💡 Long-term safety: A 10-year follow-up by Leung and Cheung (2009) reported only 2.3 % infection and 4.6 % re-operation. The roots leave more than 95 % of patients undisturbed.
Coronectomy Prices 2026 (Istanbul)
| Procedure | 2026 Price (EUR / USD) |
|---|---|
| Coronectomy (single tooth) | €280 – €560 / $310 – $610 |
| Coronectomy + sedation supplement | €390 – €670 / $425 – $730 |
| Both lower wisdom teeth (2-tooth) | €450 – €890 / $490 – $970 |
| Pre-op CBCT | €60 – €120 / $65 – $130 |
| Post-op CBCT (6 months) | €60 – €120 / $65 – $130 |
💡 Pricing factors: root anatomy complexity, sedation, CBCT need, follow-up plan.
ℹ️ Insurance: Coronectomy may be partially covered by SGK in Türkiye for medically indicated cases. International private insurance varies — most cover impacted wisdom teeth and complications including coronectomy.
Risks and Complications
Common (Resolves)
- Postoperative swelling (3–5 days)
- Mild pain (2–3 days, controlled with paracetamol/NSAID)
- Limited mouth opening (1–2 weeks)
- Light bleeding (1–2 days)
Rare
- IAN damage (< 1 % — much lower than classical extraction)
- Root infection (1–3 %, typically in first 6 months)
- Root migration causing issues (2–4 % — sometimes requires re-extraction)
- Dry socket (similar to extraction, ~3–5 %)
When Coronectomy Is Contraindicated
- Active infection on tooth (must be treated first)
- Mobile, fully erupted tooth (classical extraction adequate)
- Tooth with caries on the root
- Very young patient (root development incomplete)
⚠️ Medical disclaimer: All surgical procedures carry risk. No outcome is guaranteed. Treatment is recommended only after specialist evaluation and proper imaging.
Recovery Process
| Day | What to Expect |
|---|---|
| Day 1 | Light pressure with gauze, ice compress, pain management |
| Days 2–3 | Peak swelling, soft / liquid diet, careful brushing |
| Days 4–7 | Swelling subsides, suture removal (if non-resorbable), normal soft diet |
| Weeks 2–3 | Mouth opening returns to normal, regular diet possible |
| Weeks 4–6 | Soft tissue fully healed |
| 6 months | Bone healing — control x-ray |
| Annual | Long-term follow-up |
Academic References
The medical content in this guide draws on the following independent academic sources:
-
Pogrel MA, Lee JS, Muff DF. Coronectomy: a technique to protect the inferior alveolar nerve. Journal of Oral and Maxillofacial Surgery, 2004. https://pubmed.ncbi.nlm.nih.gov/15573359/
-
Leung YY, Cheung LK. Long-term morbidities of coronectomy on lower third molar. Oral Surgery Oral Medicine Oral Pathology Oral Radiology, 2016. https://pubmed.ncbi.nlm.nih.gov/26679359/
-
Renton T, Hankins M, Sproate C, McGurk M. A randomised controlled clinical trial to compare the incidence of injury to the inferior alveolar nerve as a result of coronectomy and removal of mandibular third molars. British Journal of Oral and Maxillofacial Surgery, 2005. https://pubmed.ncbi.nlm.nih.gov/15695121/
-
Long H, Zhou Y, Liao L, Pyakurel U, Wang Y, Lai W. Coronectomy vs. total removal for third molar extraction: a systematic review. Journal of Dental Research, 2012. https://pubmed.ncbi.nlm.nih.gov/22592125/
-
Pitros P, O'Connor N, Tryfonos A, Lopes V. A systematic review of the complications of high-risk third molar removal and coronectomy: development of a decision tree model and preliminary health economic analysis. British Journal of Oral and Maxillofacial Surgery, 2020. https://pubmed.ncbi.nlm.nih.gov/31996336/
For a CBCT-based wisdom tooth assessment and decision between classical extraction and coronectomy, contact Derya Dental Clinic in Maltepe, Istanbul. Get in touch or schedule via WhatsApp.
Last updated: 7 May 2026 — Medical review: Dr. Aykut Gürel.
Related Treatment Pages
This content is for informational purposes only and does not replace medical diagnosis or treatment. Please consult a specialist for decisions about your oral and dental health.
