What Is a Coronectomy? (Procedure Overview)
A coronectomy is a partial tooth extraction designed specifically for impacted wisdom teeth whose roots are intertwined with or pressed against the inferior alveolar nerve — the nerve that provides sensation to your lower lip, chin, and gums. During the procedure, your dentist carefully separates and removes the crown of the tooth, then trims the remaining root surface so it sits below the jawbone. By leaving the roots undisturbed, the risk of nerve injury is dramatically reduced.
How Coronectomy Differs from Full Wisdom Tooth Removal
The key difference between a coronectomy and a standard wisdom teeth removal is what is left behind. In a full extraction, the entire tooth — crown and roots — is removed. In a coronectomy, only the crown is taken out. This makes coronectomy the preferred choice when imaging shows that a full extraction could damage the nerve, potentially causing numbness or tingling. While a full extraction is still the standard for most wisdom teeth, a coronectomy offers a safer path when nerve proximity is a concern.
Who Is a Candidate for a Coronectomy?
You may be a candidate for a coronectomy if:
- Your wisdom tooth is impacted and its roots are very close to or touching the inferior alveolar nerve on a CT scan or panoramic X-ray.
- You have no active infection or disease in the tooth or surrounding bone.
- The tooth is not decayed or fractured below the gum line.
Your dentist at San Jose Dental Clinic will review your imaging and discuss whether a coronectomy or a full extraction is the right choice for your specific anatomy. This decision is always made with your long-term nerve health in mind.
Benefits of Choosing a Partial Tooth Extraction
Choosing a partial tooth extraction in Los Angeles through a coronectomy offers several important advantages:
- Preserves nerve function — The primary benefit is protecting the inferior alveolar nerve from damage.
- Reduces post-operative numbness risk — The chance of temporary or permanent lip, chin, or tongue numbness is significantly lower.
- Less invasive than alternative nerve-avoidance procedures — No need for orthodontic repositioning or root resection techniques.
- Shorter recovery in some cases — Because the roots remain in the bone, there is less surgical trauma to the surrounding tissues.
What to Expect: Before, During, and After Your Procedure
Your journey begins with a consultation and imaging at our office. If a coronectomy is recommended, we will discuss sedation options — including sedation dentistry with nitrous oxide or IV sedation with our board-certified dental anesthesiologist. The procedure itself takes about 30 to 60 minutes and is performed under local anesthesia plus your chosen level of sedation.
Recovery and Aftercare Guidelines
After your coronectomy, you can expect mild to moderate discomfort that is managed with over-the-counter or prescribed pain medication. Swelling typically peaks at 48 hours and resolves over several days. You will be advised to stick to soft foods, avoid using a straw, and gently rinse with salt water after the first 24 hours. Most patients return to normal activities within 3 to 5 days. We will schedule a follow-up visit and periodic X-rays to monitor the retained root position over time. In the rare event that the root migrates or causes symptoms, a simple follow-up procedure can address it.