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What Is Wisdom Tooth Extraction? When Is Extraction Necessary & Detailed A–Z Explanation from a Dentist

Le Hoang Phuc
Le Hoang Phuc
Asked: 06/10/2026

Hello doctor, I am experiencing pain in the back of my jaw, especially whenever I eat or chew, which is very uncomfortable. When I went for an examination, the doctor said it might be caused by the last tooth growing in an improper position and recommended monitoring it and having it extracted if necessary. However, I am still unclear about when extraction is mandatory and when the tooth can be kept without causing any problems. Could you please explain more clearly which signs indicate that early extraction is necessary to avoid complications?

Hello, the doctor understands that when experiencing pain in the rearmost tooth area, many people are often very concerned about whether the tooth should be extracted, whether wisdom tooth extraction is dangerous, and how it may affect oral health. The doctor would like to answer as follows:

What is a wisdom tooth?

A wisdom tooth, also known as the third molar or “last tooth,” is the final tooth to erupt in the dental arch, usually appearing between the ages of 17 and 25. This is the stage when the jawbone has fully developed, so in most cases, there is no longer enough space for the wisdom tooth to erupt in the proper position.

Wisdom tooth extraction is a dental procedure used to remove this tooth from the jawbone when it causes problems such as pain, inflammation, infection, or affects adjacent teeth. Unlike ordinary tooth extraction, wisdom tooth extraction is generally considered a minor surgical procedure because it may involve soft tissue, bone, and sometimes nerves.

Why do wisdom teeth often need to be extracted?

The doctor would like to explain this more clearly so you can understand that wisdom tooth extraction is not always mandatory, but in most cases, this tooth causes more problems than benefits.

First, wisdom teeth play almost no important role in chewing function. Because they are located at the very back of the mouth, their chewing force is insignificant and they can even make oral hygiene more difficult.

Second, due to insufficient space, wisdom teeth are very likely to erupt at an angle, become impacted, or push against the adjacent second molar. This not only causes pain but also creates food traps, which over time can lead to tooth decay, gingivitis, or periodontitis.

More seriously, if not treated promptly, an impacted or misaligned wisdom tooth can cause complications such as an abscess, spreading infection, or the formation of a jaw cyst. This is why dentists often recommend early extraction to prevent risks.

When is wisdom tooth extraction necessary?

Not all wisdom teeth need to be extracted; however, a dentist will recommend extraction in specific cases.

If a wisdom tooth erupts at an angle, horizontally, causes persistent or recurrent pain, this is a clear sign that intervention is necessary. In addition, if the gum around the tooth becomes inflamed, swollen, produces pus, or develops an unpleasant odor, extraction is necessary to prevent the infection from spreading.

In some other cases, even without obvious symptoms, if an X-ray shows that the tooth may affect an adjacent tooth or the bone structure, the dentist may still recommend early extraction.

Conversely, if the wisdom tooth erupts straight, causes no pain, does not affect other teeth, and can be cleaned properly, it can be kept and monitored regularly.

Is wisdom tooth extraction painful? Is it dangerous?

This is a question that almost every patient worries about before deciding to have a wisdom tooth extracted.

In reality, during wisdom tooth extraction, you will receive local anesthesia, so you will not feel pain. You will mainly feel mild pressure as the dentist performs the procedure.

After the anesthetic wears off, you may experience mild soreness or swelling during the first 1–3 days, but this is completely manageable and will gradually subside with proper care.

Regarding the level of risk, wisdom tooth extraction is a safe minor surgical procedure when performed with the proper technique, in a sterile environment, and by an experienced dentist. Complications such as nerve injury or infection are very rare and usually occur only when the procedure is performed at a low-quality facility.

What is the wisdom tooth extraction procedure like?

At Gangwhoo Cosmetic Hospital, the wisdom tooth extraction procedure is performed according to strict medical standards to ensure maximum safety for customers.

First, the dentist will conduct a general examination and take an X-ray to determine the tooth’s position, direction of eruption, and level of complexity.

Next, the area where the tooth will be extracted will be given local anesthesia to ensure that there is no pain throughout the procedure. Depending on each case, the dentist may need to make an incision in the gum or divide the tooth into smaller sections for gentle removal, minimizing damage to the surrounding tissues.

Finally, the wound will be cleaned, sutured, and detailed aftercare instructions will be provided to help the recovery process proceed quickly.

How long does it take for a wisdom tooth extraction site to heal?

Typically, after wisdom tooth extraction, the soft tissue will begin to heal within approximately 7–10 days. However, complete healing of the jawbone may take 1–3 months depending on individual healing capacity and the difficulty of the extraction.

During the first few days, you may experience mild swelling or difficulty opening your mouth, but this is a normal bodily response. If you follow the dentist’s instructions properly, the recovery process will proceed smoothly without complications.

How much does wisdom tooth extraction cost?

The cost of wisdom tooth extraction is not fixed and depends on several factors, such as:

  • The degree of misalignment or impaction
  • The difficulty of the extraction
  • The equipment and technology used

Typically, a straight-erupted tooth will cost less to extract than an impacted tooth or one located near a nerve. Therefore, to know the exact price, you should have a direct examination so that the dentist can assess your specific case.

How to care for yourself after wisdom tooth extraction

After tooth extraction, proper care plays a very important role in reducing pain and preventing complications.

During the first 24 hours, you should bite on the gauze as instructed and avoid vigorous rinsing or spitting so as not to dislodge the blood clot. Your diet should prioritize soft, cool foods and avoid spicy, hot, or excessively hard foods.

In addition, you should maintain gentle oral hygiene, take medications as prescribed, and attend follow-up appointments as scheduled so that the dentist can check the recovery process.

When should you have your wisdom tooth examined and extracted?

If you are experiencing signs such as dull pain in the back of the mouth, swollen gums, difficulty opening your mouth, or an unpleasant odor, you should have an examination as soon as possible.

At Gangwhoo Cosmetic Hospital, customers receive a thorough examination using a modern diagnostic system, combined with an experienced team of dentists to determine the appropriate treatment approach, ensuring safety and minimizing pain as much as possible.

Wisdom tooth extraction is a common indication in dentistry to eliminate potential risks to oral health. Although not every case requires extraction, early examination and timely treatment will help you avoid many serious complications later on.


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