Is numbness after an apicoectomy normal?
Cited to 4 sources. Reviewed 2026-08-25.
Numbness for a few hours after an apicoectomy is normal and is simply the local anesthetic wearing off. Numbness or tingling in the lip or chin that is still there the next day is not typical and should be reported to your endodontist, though it is uncommon and in most reported cases it is temporary. The risk is highest for surgery on lower back teeth, where the mental nerve and mandibular canal sit close to the root tips.
- Normal anesthetic numbness
- A few hours
- Call your endodontist
- If numb past 24 hours
- Highest risk teeth
- Lower premolars and molars
- Most reported cases
- Temporary, resolving over weeks
What to expect, step by step
Lip, cheek, chin or tongue feel thick and dead. This is the local anesthetic and it is expected after any dental surgery.
What to do: Do not eat or drink hot liquids while numb, and be careful not to bite your lip or cheek. Wait for sensation to return before chewing.
Sensation returning, often with pins and needles as it comes back. By bedtime most people have normal or near normal feeling.
What to do: Nothing special. If the tingling is uncomfortable, it usually settles as the nerve fully wakes up.
Feeling should be back to normal. Numbness, tingling or a patch of reduced sensation that is still present now is outside the usual pattern.
What to do: Call your endodontist and describe exactly where the altered sensation is and whether it is complete numbness or partial. Ask them to document it.
When altered sensation does persist after apical surgery, published case reports most often describe it improving over a period of weeks. Recovery timing varies and is not guaranteed.
What to do: Keep the follow-up appointments your endodontist schedules to track it. Report any change, better or worse.
The two very different kinds of numbness
The first kind is anesthetic. Every apicoectomy is done under local anesthesia, and numbness for a few hours afterward is just the drug wearing off. It affects the lip, cheek, chin or tongue on that side, comes back with pins and needles, and resolves the same day.
The second kind is neurosensory disturbance, meaning the nerve itself was irritated, stretched or bruised during surgery. This is uncommon, but it is a recognized possibility for surgery in the lower back of the mouth. It looks the same on day one and is only distinguishable by the fact that it does not go away on schedule.
That is why the 24 hour mark is the practical rule. Numbness before then tells you nothing. Numbness after it is worth a phone call.
Why lower back teeth carry more risk
The concern is anatomy. In the lower jaw, the mandibular canal carries the inferior alveolar nerve, which exits through the mental foramen near the roots of the premolars and continues as the mental nerve supplying feeling to the lower lip and chin. Root tips of lower premolars and molars can sit very close to these structures, and researchers examining apical surgery in mandibular premolars and molars have specifically studied the risk of altered sensation from that proximity.
Because of this, endodontists often take a cone beam CT scan before operating on lower back teeth. The scan shows exactly how far the root tip is from the nerve in three dimensions, which is information a standard flat X-ray cannot give.
Upper teeth do not carry the same lip and chin risk. Surgery on upper back teeth borders the sinus instead, which produces different issues rather than numbness.
- Lower premolars and molars: mental nerve and mandibular canal are the structures of concern
- Upper back teeth: the maxillary sinus is nearby, not a sensory nerve to the lip
- Upper and lower front teeth: numbness after surgery is unusual
- A cone beam CT before surgery is how the distance to the nerve is assessed
What to tell your endodontist, and why detail matters
Vague reports are hard to track over time. Be specific and repeat the same description at each visit so any change is obvious.
Describe the exact area: lower lip only, lip and chin, one side of the tongue, a patch of gum. Say whether it is complete absence of feeling, reduced feeling, tingling, or an unpleasant sensation when touched. Note whether it has changed at all since the day of surgery. Improvement over days, even slight, is the single most reassuring detail you can give.
Also mention practical effects: drooling, difficulty with speech sounds, biting your lip while eating, or trouble with hot drinks. These matter for safety advice in the meantime.
Practical safety while an area is numb
A numb lip or tongue cannot warn you about heat or pressure, which is how people injure themselves without noticing.
- No hot drinks or hot food until sensation returns
- Chew carefully and on the opposite side to avoid biting the numb lip or cheek
- Check the numb area in a mirror for accidental bite marks
- Shave with extra care if the chin is involved
- Keep taking your prescribed medication and keep every follow-up appointment
Call your dentist or oral surgeon if
- Numbness or tingling in the lip, chin or tongue that is still present 24 hours after surgery
- Numbness that is spreading rather than shrinking
- A burning, electric or painful sensation in the numb area
- Numbness combined with increasing swelling, fever or drainage, which points to infection rather than nerve irritation
- New numbness that appears days after surgery when sensation had already returned
- Any numbness accompanied by difficulty swallowing or breathing (seek emergency care immediately)
Related questions
How long should numbness last after an apicoectomy?
A few hours, matching the local anesthetic used. If you are still numb the next morning, call your endodontist and describe exactly which area is affected.
Will lasting numbness after an apicoectomy go away?
In most published reports of altered sensation after endodontic procedures it improves over weeks, but outcomes vary and permanent change is possible. Early reporting and documented follow-up are what matter most.
Why did my endodontist order a 3D scan before the surgery?
Cone beam CT shows how close the root tip sits to the mandibular canal and mental foramen in three dimensions. That distance is exactly what determines the nerve risk for lower back teeth.
Can the infection itself cause numbness?
Yes. Case reports describe numbness of the lip and chin caused by periapical infection pressing on or inflaming the nerve, which then resolves once the infection is treated. That is one reason to report numbness rather than assume it was the surgery.
Sources
- Neurosensory Disturbances After Apical Surgery of Mandibular Premolars and Molars: A Retrospective Analysis and Case-Control Study (PMC (European Endodontic Journal))
- Temporary Mental Nerve Paresthesia Originating from Periapical Infection (PMC (Restorative Dentistry and Endodontics))
- Endodontic Surgery Explained (American Association of Endodontists)
- Root Canal Post Treatment Care (American Association of Endodontists)
Reviewed against the sources above on 2026-08-25. General information only, not dental advice. Your own provider's aftercare instructions come first.
Keep reading
Most people are back to normal activities the day after an apicoectomy. Swelling peaks around 48 to 72 hours, stitches usually come out within the first week, and the gum incision has closed over by about 2 weeks. The bone around the trimmed root end heals much more slowly, filling in over several months, which is why your endodontist checks it with follow-up X-rays rather than asking how you feel.
For the first 48 hours after an apicoectomy: ice the outside of your cheek 20 minutes on and 20 minutes off, keep your head elevated, eat cool soft foods, and do not lift your lip or cheek to inspect the stitches. Skip strenuous exercise, smoking and straws. Do not chew, drink hot or cold liquids, or smoke for the first hour. Start gentle salt water rinses only when your endodontist tells you to, and never spit forcefully.
Feeling better is a good early sign, but success after an apicoectomy is judged on X-rays, not symptoms. Your endodontist looks for the dark area around the root tip shrinking and filling in with new bone, usually assessed at a follow-up around one year. Pooled research on modern endodontic microsurgery reports success in roughly 80 to 90 percent of cases, with rates somewhat lower at longer follow-up.
Swelling after an apicoectomy builds for the first two days, peaks somewhere around 48 to 72 hours, and then comes down over the rest of the week. Most people look close to normal by day 5 to 7. Bruising on the cheek or under the eye often shows up on day 2 or 3, after the swelling has already started, and can take one to two weeks to fade through the usual purple to yellow color change.