Coronectomy: The Partial Wisdom Tooth Removal That Protects a Nearby Nerve

A coronectomy is a surgical procedure that removes only the crown (the visible upper portion) of a wisdom tooth, deliberately leaving the roots in place, used specifically when the roots are positioned very close to the inferior alveolar nerve, the nerve providing sensation to the lower lip and chin.

If imaging shows a wisdom tooth's roots are intimately close to or wrapped around this nerve, attempting to fully extract the tooth carries a meaningfully elevated risk of nerve injury, potentially causing lasting numbness or altered sensation, making leaving the roots in place, once the crown and its associated problems are removed, the genuinely lower-risk option in this specific situation.

Generally, no — the remaining roots are typically expected to remain stable, sometimes gradually migrating slightly away from the nerve over time, without causing significant ongoing issues, though your surgeon monitors this through follow-up imaging.

This is a specific technique reserved for cases where imaging clearly shows this particular high-risk relationship between the tooth roots and the nerve, meaning it's not the standard approach for typical wisdom tooth removal but a specifically indicated alternative for this particular situation.

This is based on detailed imaging, often including a CT scan, allowing your oral surgeon to precisely assess the relationship between the tooth roots and the nerve, informing whether the risk of full extraction genuinely outweighs the benefits compared to this alternative approach.

Yes, since the crown, which is typically the source of symptoms like pain, infection, or crowding pressure, is removed, this procedure generally resolves the presenting issue while specifically avoiding the elevated nerve injury risk that full root removal would carry in this particular situation.

These are generally expected to remain stable within the bone, sometimes covered by healing gum tissue, without causing ongoing problems, though periodic monitoring through follow-up imaging helps confirm this expected stable course continues over time.

In uncommon cases, if the roots do cause a later issue, such as migrating in an unexpected way or becoming symptomatic, further treatment might be considered at that point, though this isn't the typically expected outcome for most coronectomy cases.

The general recovery process is broadly similar to standard wisdom tooth extraction, involving typical post-surgical swelling and discomfort managed with standard care, since the crown removal itself is the primary surgical event.

If your imaging suggests your wisdom tooth roots are positioned close to the nerve, your oral surgeon should proactively discuss this option with you as part of your treatment planning conversation, though it's also reasonable to specifically ask about this possibility if you have concerns about nerve injury risk with your particular case.

While the underlying surgical skills are within general oral surgery training, familiarity and specific experience with this particular technique can vary, making it reasonable to confirm your surgeon's experience with this specific approach if it's being recommended for your case.