When do wisdom teeth need to be removed, and what is recovery like?

Wisdom teeth are the last molars to develop, usually appearing between ages 17 and 25. For most people, the jaw simply does not have room for them. The result is impaction: teeth that cannot fully emerge through the gum and cause a cascade of problems ranging from mild discomfort to serious infection. I am Dr. Emily Nguyen, Principal Dentist at Picasso Dental Clinic, and I have been guiding patients through wisdom tooth extractions across our Hanoi, Da Nang, Ho Chi Minh City, and Da Lat locations for over a decade. This guide explains what I look for when deciding whether extraction is necessary and exactly what you can expect before, during, and after the procedure.

Why wisdom teeth cause problems

Human jaws have become smaller over thousands of years of evolution while the number of teeth has stayed the same. Wisdom teeth arrived late in evolutionary history and often simply have nowhere to go. When a tooth cannot erupt fully, it becomes impacted inside the jawbone or just beneath the gum surface.

Partial eruption creates a gum flap called an operculum that traps food and bacteria. Even diligent brushing cannot reach beneath that flap, so infection (pericoronitis) becomes a recurring problem. Horizontally or mesially impacted teeth press directly against the roots of the second molars, causing bone loss and sometimes permanent damage. Deeply impacted teeth occasionally develop cysts that silently erode jawbone over months or years, visible only on X-ray.

Signs your wisdom teeth need to come out

Some patients come to us with obvious symptoms. Others are surprised when a routine X-ray reveals a problem they have not yet felt. Here are the signs I look for.

• Pain or tenderness at the back of the mouth, especially when chewing or opening wide
• Swelling and redness in the gum tissue around a partially erupted tooth
• Recurring infections or a persistent bad taste despite good hygiene
• Jaw pain or stiffness, particularly in the morning
• Other teeth shifting or becoming crowded without clear cause
• Cysts, lesions, or unusual darkening around tooth roots on X-ray

What happens during extraction

Wisdom tooth extraction is an outpatient procedure. You arrive, we numb the area, and you go home the same day. Here is the sequence.

Anaesthetic and sedation

We start with local anaesthetic injected into the gum and jaw. Within a few minutes the entire area is numb. For anxious patients or cases involving multiple simultaneous extractions, we offer intravenous sedation so you remain comfortable and relaxed throughout. General anaesthesia is rarely necessary for routine cases.

Accessing the tooth

For fully impacted teeth, we make a small incision in the gum to expose the tooth and the overlying bone. A small amount of bone is removed if it is blocking access to the root. For partially erupted teeth, the incision is minimal or sometimes unnecessary.

Removing the tooth

We loosen the tooth from the surrounding ligament with a specialized instrument, then lift it free. If the tooth is large or its roots are curved, we divide it into two or three pieces first. This makes removal easier and reduces pressure on surrounding structures. You will feel pressure and hear sounds during this stage, but there should be no sharp pain.

Closing the socket

After the tooth is out, we clean the socket thoroughly, smooth any irregular bone edges, place dissolving stitches if needed, and pack the area with gauze. The whole process typically takes 20 to 40 minutes per tooth.

"I had extensive dental work done here by Dr Adrian which included removal of 3 wisdom teeth, a crown, teeth cleaning and 3 fillings. From the start I could not have been happier with the service. Everything was clearly explained including time frame, price and what to expect at every appointment." — Ruth, Hanoi Old Quarter

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Recovery: what to expect day by day

Recovery from wisdom tooth extraction follows a predictable pattern. Knowing what is normal helps you stay calm and care for yourself well.

Day 1: the first 24 hours

Bleeding, swelling, and throbbing are all normal on the day of surgery. Keep biting firmly on the gauze pad placed by your dentist for the first hour. Do not rinse, spit forcefully, or use a straw, as these actions can dislodge the blood clot that forms the foundation of healing. Apply an ice pack to the outside of your cheek for 20 minutes on and 20 minutes off throughout the day. Take prescribed pain medication before the anaesthetic wears off completely, rather than waiting for pain to peak.

Days 2 to 3: swelling peaks

Swelling and bruising typically peak on the second or third day. Your face may look noticeably puffy. This is entirely normal. After the first 24 hours, switch from ice packs to warm compresses to encourage circulation and reduce swelling faster. Continue soft foods and pain medication as needed. Rinse gently with warm salt water after every meal.

Days 4 to 7: steady improvement

Most patients feel significantly better by day four. Pain should be decreasing rather than increasing. If you notice pain worsening around day three or four, contact us, as this can signal dry socket. By the end of the first week, most people return to normal activities. Avoid vigorous exercise until then, as elevated blood pressure can reopen the extraction site.

Complications to watch for

Dry socket

Dry socket (alveolar osteitis) is the most common complication, affecting roughly 2 to 5 percent of simple extractions and up to 30 percent of lower impacted wisdom teeth. It occurs when the blood clot is dislodged or dissolves before the socket has healed, leaving bare bone exposed to air and food. The main symptom is intense, throbbing pain starting two to four days after extraction, often radiating to the ear or jaw. Treatment involves placing a medicated dressing in the socket to relieve pain while the tissue heals beneath it. Prevent it by avoiding straws, smoking, and spitting for the first week.

Infection

Signs of infection include increasing (not decreasing) swelling after day three, fever above 38C, discharge of pus from the socket, and worsening pain despite medication. Take prescribed antibiotics exactly as directed for their full course. Contact us immediately if you notice any of these signs.

Nerve effects

Lower wisdom teeth sit close to the inferior alveolar nerve and lingual nerve. Temporary altered sensation (numbness, tingling) in the lip, tongue, or chin occurs in a small number of cases and almost always resolves within weeks to months. Permanent nerve damage is rare. We review your X-rays and, where indicated, use cone-beam CT scanning before surgery to map root proximity to nerves and minimise risk.

Recovery care checklist

• Bite firmly on gauze for the first hour; replace if saturated but do not remove prematurely
• Avoid straws, spitting, and smoking for a full week to protect the clot
• Ice packs (20 on, 20 off) for the first 24 hours, then switch to warm compresses
• Soft diet for 3 to 5 days: yogurt, mashed potato, scrambled eggs, smooth soups
• Rinse gently with warm salt water starting 24 hours after surgery, after every meal
• Take all prescribed antibiotics for the full course, even if you feel fine