Wisdom teeth (the third molars at the back of each side of the upper and lower jaw) typically erupt in late adolescence or early adulthood, between ages 17 and 25. For some patients they erupt cleanly and function as normal molars. For most, they cause problems that warrant removal. This guide covers what wisdom teeth are, the situations that lead to extraction, what the procedure involves, what recovery looks like, and how to prepare for the appointment.
For active treatment options at our Gorham, ME practice, see our Wisdom Tooth Extraction service page.
What Are Wisdom Teeth?
Wisdom teeth are evolutionary remnants of larger jaws our ancestors had. The modern human jaw is often too small to accommodate them, which leads to a range of complications when they try to erupt. Some people are born without one or more wisdom teeth (a normal anatomical variation). Others have all four wisdom teeth and may have additional partial wisdom teeth at the very back. The dentist evaluates the position and developmental stage of the wisdom teeth through panoramic X-rays during routine adolescent and young adult visits.
When Wisdom Teeth Cause Problems
Impaction
An impacted wisdom tooth is one that cannot fully erupt because of the position of the tooth, the surrounding bone, or adjacent teeth blocking it. Impaction is the most common reason wisdom teeth need removal. Impacted teeth can be partially erupted (visible above the gum line but not fully through), fully impacted in soft tissue, or fully impacted in bone. Each presentation requires a different surgical approach.
Crowding and Misalignment
Wisdom teeth that erupt against existing molars can push the rest of the teeth forward, causing crowding in the front of the mouth. Patients who completed orthodontic treatment in their teens are particularly at risk because the wisdom teeth can undo years of straightening. The orthodontist or general dentist may recommend wisdom tooth extraction to preserve the orthodontic result.
Infection (Pericoronitis)
A partially erupted wisdom tooth creates a flap of gum tissue that traps food and bacteria, leading to a localized infection called pericoronitis. Symptoms include pain, swelling, redness around the tooth, bad taste in the mouth, and sometimes fever. Pericoronitis often resolves with antibiotics and improved local hygiene, but the condition recurs unless the tooth is removed.
Cysts and Tumors
Impacted wisdom teeth can develop fluid-filled cysts in the surrounding bone over time. Cysts are usually benign but can damage the jawbone and adjacent teeth as they grow. Less commonly, tumors develop in the same region. Routine X-rays catch these conditions early when treatment is straightforward.
Decay and Gum Disease
Wisdom teeth at the back of the mouth are difficult to clean thoroughly. Cavities and gum disease develop more easily on wisdom teeth than on the rest of the teeth. When a wisdom tooth has significant decay, removal is often more practical than restoration.
The Extraction Procedure
Wisdom tooth extraction is one of the most common surgical procedures performed by dentists and oral surgeons. The complexity depends on whether the tooth has erupted normally or is impacted, and on the position of nearby anatomical structures (especially the inferior alveolar nerve in the lower jaw).
Anesthesia Options
Local anesthesia numbs the surgical area and is sufficient for most simple wisdom tooth extractions. Patients who feel anxious, are having multiple teeth removed, or have impacted teeth requiring more involved surgery may benefit from oral sedation, nitrous oxide, or IV sedation. The dentist or oral surgeon discusses the appropriate option during the pre-procedure consultation.
Surgical Approach
Erupted wisdom teeth are typically removed in a manner similar to a regular extraction: the tooth is loosened from its socket and lifted out. Impacted teeth require an incision in the gum tissue to expose the tooth, and sometimes a small amount of bone is removed to access the tooth. The tooth may be sectioned (cut into pieces) to make removal easier and reduce trauma to the surrounding tissue. The site is then cleaned, and the gum is closed with dissolving sutures.
Recovery and Aftercare
Recovery from wisdom tooth extraction varies based on the complexity of the surgery, but most patients return to normal activity within 3 to 7 days. The first 24 hours include some bleeding, swelling, and discomfort. Over-the-counter pain medication is usually adequate, though prescribed pain medication may be provided for impacted extractions. Ice packs applied to the cheek for 15 to 20 minutes at a time reduce swelling.
Soft foods (yogurt, smoothies, eggs, mashed potatoes, soup) should be the diet for the first few days. Hard, crunchy, or spicy foods can disturb the surgical site. Patients should avoid drinking through a straw or smoking for at least one week, both of which can dislodge the blood clot in the socket and cause a painful condition called dry socket.
Gentle warm salt water rinses can begin 24 hours after the procedure to keep the area clean. Brushing should resume the day after surgery, with care to avoid the surgical site for several days. The patient typically returns for a follow-up visit one to two weeks after the procedure to confirm healing.
Risk Factors and Considerations
Wisdom tooth extraction is generally safe when performed by an experienced dentist or oral surgeon. The main risks are dry socket (painful but treatable), infection (managed with antibiotics), and rarely, nerve injury affecting the lip or tongue (more likely with deeply impacted lower wisdom teeth near the inferior alveolar nerve). Patients with bleeding disorders, immune system conditions, or who take blood thinners should discuss specific precautions before surgery.
Lead Expert Insight
Dr. Brett Morgan, DMD, founder of Morgan Dental Care in Gorham, ME, frames the timing of extraction: “Wisdom teeth are easier to remove and have a smoother recovery when the patient is younger, before the roots fully form and before the bone fully matures around them. We monitor wisdom tooth development at routine visits during the late teens and recommend extraction when the X-rays show the teeth will cause problems. Waiting until a wisdom tooth becomes painful is harder on the patient than addressing it preventively.”
When to See a Dentist
Patients with pain, swelling, or visible eruption of wisdom teeth should be evaluated promptly. Routine dental visits during the late teens and early twenties include monitoring of wisdom tooth development through panoramic X-rays, which catches problems before they become urgent. Any patient who has not had a recent dental visit and is in the typical wisdom tooth eruption age range should schedule an examination.
Schedule a consultation by calling (207) 839-2655 or through our website.