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Have you ever had a tooth abscess? Let's talk about a periapical abscess!

Have you ever had a tooth abscess? Let's talk about a periapical abscess!

Have you ever had a toothache that was so bad that you couldn't stand it anymore? Or do you feel pain when you touch your tooth or chew food? Sometimes this happens when there is an infection at the root of a tooth, which is something like an abscess. Today we are going to talk about just such a condition, a pus-filled abscess at the root of a tooth, medically called a `` periapical abscess ''.

What is this Periapical Abscess?

Simply put, a periapical abscess is a small, pus-filled sac that forms around the root of your tooth. Do you know how this happens? Bad bacteria in our mouths enter the tooth through a cavity or a crack in the tooth. They then infect the soft tissue inside the tooth, called the pulp . This infection gradually spreads to the root of the tooth and then to the tissues around the tooth.

Just think, it's like if there's a hole in the roof of our house, water will leak in and wet the walls. Even a small crack in a tooth can cause bacteria to enter and cause a big problem.

If left untreated, this infection can spread to other parts of your body, sometimes leading to serious, life-threatening conditions. So if you think you have an abscess like this, it's important to seek medical advice immediately.

The difference between a periodontal abscess and a periapical abscess

Now you might think that these two are the same, right? There is a slight difference. A `(Periapical Abscess)` forms inside the tooth, at the root of the tooth. But a `(Periodontal Abscess)` forms in the teeth. Of these two, the most common type is the `(Periapical Abscess)`, which forms at the root of the tooth.

What are the symptoms of this?

The symptoms of a ``Periapical Abscess`` may vary from person to person, but there are some common symptoms:

  • Pain when chewing food or clenching your teeth together: It may feel like someone is biting you from the inside.
  • Tooth numbness or pain to cold and heat:Even eating a piece of ice cream or drinking hot tea can make the toothache worse.
  • An unbearable, severe, throbbing toothache: This is the main symptom that many people experience. Sometimes the pain can be so severe that you can't even sleep at night.
  • Pain spreading to the ear, neck, or jaw: Not only is the tooth painful, but this pain can also spread to the surrounding areas.
  • Fever: You can get a fever because there is an infection in the body.
  • Bad breath (Halitosis) or a bad taste in the mouth: Pus can change the taste of the mouth and cause a bad odor.
  • Swollen lymph nodes in the neck or under the armpit: These can swell when the body fights infection.
  • Facial swelling : If the infection spreads, the affected side of the face may swell.
  • Difficulty breathing or swallowing : This is a more serious symptom. This can happen if the infection spreads to the throat . If this happens, you should go to the hospital immediately.

Sometimes this abscess can burst suddenly. If this happens, you may suddenly feel less pain and have a bad taste in your mouth. But that doesn't mean the infection is gone. You should definitely see a dentist for treatment.

Most of the time, a Periapical Abscess causes discomfort and pain. However, some people can have this condition without any pain. If you have other symptoms, such as fever, bad breath, or swelling, see a dentist even if there is no pain.

Why is this happening? What are the reasons?

As mentioned earlier, the main cause of this is a bacterial infection. Bacteria in our mouths enter the pulp of the tooth, either through a cavity, a crack, or a fracture. This infection then spreads to the root of the tooth and the surrounding tissues.

Who is more likely to develop this condition?

There are several risk factors that can contribute to the development of a ``Periapical Abscess``:

  • Poor oral and dental hygiene: Things like not brushing your teeth and not cleaning between your teeth can lead to tooth decay and increased risk of developing infections like this.
  • Lack of saliva (dry mouth – `(Xerostomia)`) : Saliva is a natural defense system in our mouth. When there is less saliva, it is easier for bacteria to grow.
  • Frequent consumption of sugary foods and drinks: Sugar is a good food for bacteria. Eating and drinking too much sugar increases the risk of tooth decay.

What complications can occur if left untreated?

This is something that many people take lightly. If you ignore it as a minor toothache, a ``Periapical Abscess'' can cause serious problems.

  • The infection can spread to the jawbone.
  • It can then spread to other parts of the head and neck.
  • Sometimes, the infection can enter the bloodstream and cause a life-threatening condition called `Sepsis` , in which the infection spreads throughout the body.

So, don't ignore even the smallest thing. Remember that a tooth problem can affect not only the tooth but the entire body.

How do you recognize this?

Dentists use two main methods to identify a ``Periapical Abscess'':

1. Dental exam: The doctor will carefully examine your teeth and gums. He may gently tap on the suspicious tooth to see if it is sensitive to pressure.

2. Dental X-rays: An X-ray of the infected tooth is taken. This can show exactly how far the infection has spread and what damage has occurred around the root of the tooth.

3. Dental CT scan: In some cases, especially if there is a suspicion that the infection has spread to the neck, your doctor may order a CT (Computed Tomography) scan. This can provide a three-dimensional (3D) view of your mouth, allowing you to better understand the extent of the infection.

What is the treatment for this?

The treatment for a `(Periapical Abscess)` depends on how far the infection has spread. There are several main treatment options:

  • Antibiotics : Your doctor may prescribe antibiotics to stop the infection from spreading and to control the infection in your body. But remember, antibiotics alone will not cure the infection completely. You will also need to treat the tooth that caused the infection.
  • Incision and drainage: In this procedure, the doctor makes a small incision in the area where the pus has collected and drains the pus. The area is then thoroughly cleaned with sterile saline solution. Sometimes, a small rubber tube (drain) may be placed in the incision to allow any remaining pus to drain for several days.
  • Root Canal Therapy: In most cases, the best way to save a tooth is to have a root canal. In this, a small hole is made in the top of the tooth, and special instruments are used to completely remove the infected pulp and pus inside the tooth. The tooth is then thoroughly cleaned and disinfected, and the root is filled with a special rubber-like material called Gutta-percha. This prevents the tooth from becoming infected again. In most cases, a dental crown, an artificial covering that is placed over the tooth, is also needed to protect the tooth after a root canal.
  • Tooth Extraction: Sometimes, if the infection is severe and there is no way to save the tooth, your doctor may recommend a tooth extraction. In this, the affected tooth is carefully removed by cutting away the tissue around it. Sometimes, a dental bone graft may be performed to reduce the loss of bone in the jaw after the tooth is extracted. Before the tooth is extracted, your doctor will talk to you about the options available to replace the tooth (e.g., dental bridges, dental implants).

How can this situation be reduced?

Although it is not possible to completely prevent the development of a Periapical Abscess, there are things we can do to reduce the risk:

  • Follow good oral hygiene habits: Brush your teeth twice a day for at least two minutes with a toothpaste that contains fluoride. Use dental floss to clean between your teeth.
  • Drink water containing fluoride: Fluoride strengthens teeth.
  • Limit sugary foods and drinks: Reducing sugary foods and drinks can help prevent tooth decay .
  • See a dentist for a check-up and cleaning: It is very important to have a dental check-up at least once a year, or at the interval recommended by your doctor. This way, any problems can be identified and treated as soon as they start.

How long can you go without treatment?

There is no exact time frame for this. For some people, the condition may worsen in a few weeks, for others, it may take months. However, delaying treatment increases the risk of serious, life-threatening complications such as ``Sepsis''. So, if you have symptoms, don't delay.

When should you see a dentist?

If you think you have symptoms of a `(Periapical Abscess)`, see a dentist immediately. The sooner you get treatment, the better the chance of saving the tooth and the less likely it is to develop complications.

When should you go to an Emergency Treatment Unit (ETU) ?

If you have the following symptoms, go to an emergency room immediately:

  • Fever
  • Feeling cold and shivering (Chills)
  • Nausea or vomiting
  • Severe pain that does not subside despite taking medication

These mean that the infection has become severe and is starting to affect other parts of the body.

What questions should you ask the doctor?

If you have a `(Periapical Abscess)`, it's a good idea to ask your doctor these questions:

  • Where do I have a `(Periapical Abscess)`?
  • Has the infection spread? If so, how far?
  • Do I need to take antibiotics?
  • Can my tooth be saved?
  • What treatment options do I have?
  • If a tooth has to be extracted, what are the options for replacing it?

How long does it take for this abscess to form?

The answer to this question varies from person to person. Some cavities can develop in a day or two. Others can develop without you even realizing it for weeks or months. If you notice anything different in your mouth or feel something is not right, see a dentist without delay.

Can an abscess like this develop after a `(Root Canal)` treatment?

Yes, it can happen. But most of the time it doesn't. If bacteria get back into the tooth during treatment, or if it takes too long to get a crown after a root canal, it can become infected again. Even if there is a root fracture, it can sometimes become infected again. If that happens, your doctor may recommend a second root canal or extraction.

Can a tooth abscess cause sinus symptoms?

Yes, it can happen. If your infected tooth is located behind your upper jaw, it is close to the air cavities on either side of your nose (`Maxillary Sinuses`). Then the infection in the tooth can spread to those `(Sinus)` cavities as well. That is why, even if you have a minor toothache, do not ignore it, and see a doctor as soon as possible.

Finally, things to remember

A periapical abscess is an infection that develops around the root of a tooth. It is often painful, but sometimes it can be painless. If you think you have this condition, it is important to see a dentist right away. Getting treatment early can help prevent the infection from spreading to other parts of your mouth and body. Your health is in your hands!


⚠️ Important: The medical articles and information on Nirogi Lanka are for general awareness only, and are by no means a substitute for professional medical advice, diagnosis, or treatment. For any medical problem you have, consult a qualified physician immediately.

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Have you ever had a tooth abscess? Let's talk about a periapical abscess!
SymptomsJune 5, 2025

Have you ever had a tooth abscess? Let's talk about a periapical abscess!

Have you ever had a toothache that was so bad that you couldn't stand it anymore? Or do you feel pain when you touch your tooth or chew food? Sometimes this happens when there is an infection at the root of a tooth, which is something like an abscess. Today we are going to talk about just such a condition, a pus-filled abscess at the root of a tooth, medically called a `` periapical abscess ''.

What is this Periapical Abscess?

Simply put, a periapical abscess is a small, pus-filled sac that forms around the root of your tooth. Do you know how this happens? Bad bacteria in our mouths enter the tooth through a cavity or a crack in the tooth. They then infect the soft tissue inside the tooth, called the pulp . This infection gradually spreads to the root of the tooth and then to the tissues around the tooth.

Just think, it's like if there's a hole in the roof of our house, water will leak in and wet the walls. Even a small crack in a tooth can cause bacteria to enter and cause a big problem.

If left untreated, this infection can spread to other parts of your body, sometimes leading to serious, life-threatening conditions. So if you think you have an abscess like this, it's important to seek medical advice immediately.

The difference between a periodontal abscess and a periapical abscess

Now you might think that these two are the same, right? There is a slight difference. A `(Periapical Abscess)` forms inside the tooth, at the root of the tooth. But a `(Periodontal Abscess)` forms in the teeth. Of these two, the most common type is the `(Periapical Abscess)`, which forms at the root of the tooth.

What are the symptoms of this?

The symptoms of a ``Periapical Abscess`` may vary from person to person, but there are some common symptoms:

  • Pain when chewing food or clenching your teeth together: It may feel like someone is biting you from the inside.
  • Tooth numbness or pain to cold and heat:Even eating a piece of ice cream or drinking hot tea can make the toothache worse.
  • An unbearable, severe, throbbing toothache: This is the main symptom that many people experience. Sometimes the pain can be so severe that you can't even sleep at night.
  • Pain spreading to the ear, neck, or jaw: Not only is the tooth painful, but this pain can also spread to the surrounding areas.
  • Fever: You can get a fever because there is an infection in the body.
  • Bad breath (Halitosis) or a bad taste in the mouth: Pus can change the taste of the mouth and cause a bad odor.
  • Swollen lymph nodes in the neck or under the armpit: These can swell when the body fights infection.
  • Facial swelling : If the infection spreads, the affected side of the face may swell.
  • Difficulty breathing or swallowing : This is a more serious symptom. This can happen if the infection spreads to the throat . If this happens, you should go to the hospital immediately.

Sometimes this abscess can burst suddenly. If this happens, you may suddenly feel less pain and have a bad taste in your mouth. But that doesn't mean the infection is gone. You should definitely see a dentist for treatment.

Most of the time, a Periapical Abscess causes discomfort and pain. However, some people can have this condition without any pain. If you have other symptoms, such as fever, bad breath, or swelling, see a dentist even if there is no pain.

Why is this happening? What are the reasons?

As mentioned earlier, the main cause of this is a bacterial infection. Bacteria in our mouths enter the pulp of the tooth, either through a cavity, a crack, or a fracture. This infection then spreads to the root of the tooth and the surrounding tissues.

Who is more likely to develop this condition?

There are several risk factors that can contribute to the development of a ``Periapical Abscess``:

  • Poor oral and dental hygiene: Things like not brushing your teeth and not cleaning between your teeth can lead to tooth decay and increased risk of developing infections like this.
  • Lack of saliva (dry mouth – `(Xerostomia)`) : Saliva is a natural defense system in our mouth. When there is less saliva, it is easier for bacteria to grow.
  • Frequent consumption of sugary foods and drinks: Sugar is a good food for bacteria. Eating and drinking too much sugar increases the risk of tooth decay.

What complications can occur if left untreated?

This is something that many people take lightly. If you ignore it as a minor toothache, a ``Periapical Abscess'' can cause serious problems.

  • The infection can spread to the jawbone.
  • It can then spread to other parts of the head and neck.
  • Sometimes, the infection can enter the bloodstream and cause a life-threatening condition called `Sepsis` , in which the infection spreads throughout the body.

So, don't ignore even the smallest thing. Remember that a tooth problem can affect not only the tooth but the entire body.

How do you recognize this?

Dentists use two main methods to identify a ``Periapical Abscess'':

1. Dental exam: The doctor will carefully examine your teeth and gums. He may gently tap on the suspicious tooth to see if it is sensitive to pressure.

2. Dental X-rays: An X-ray of the infected tooth is taken. This can show exactly how far the infection has spread and what damage has occurred around the root of the tooth.

3. Dental CT scan: In some cases, especially if there is a suspicion that the infection has spread to the neck, your doctor may order a CT (Computed Tomography) scan. This can provide a three-dimensional (3D) view of your mouth, allowing you to better understand the extent of the infection.

What is the treatment for this?

The treatment for a `(Periapical Abscess)` depends on how far the infection has spread. There are several main treatment options:

  • Antibiotics : Your doctor may prescribe antibiotics to stop the infection from spreading and to control the infection in your body. But remember, antibiotics alone will not cure the infection completely. You will also need to treat the tooth that caused the infection.
  • Incision and drainage: In this procedure, the doctor makes a small incision in the area where the pus has collected and drains the pus. The area is then thoroughly cleaned with sterile saline solution. Sometimes, a small rubber tube (drain) may be placed in the incision to allow any remaining pus to drain for several days.
  • Root Canal Therapy: In most cases, the best way to save a tooth is to have a root canal. In this, a small hole is made in the top of the tooth, and special instruments are used to completely remove the infected pulp and pus inside the tooth. The tooth is then thoroughly cleaned and disinfected, and the root is filled with a special rubber-like material called Gutta-percha. This prevents the tooth from becoming infected again. In most cases, a dental crown, an artificial covering that is placed over the tooth, is also needed to protect the tooth after a root canal.
  • Tooth Extraction: Sometimes, if the infection is severe and there is no way to save the tooth, your doctor may recommend a tooth extraction. In this, the affected tooth is carefully removed by cutting away the tissue around it. Sometimes, a dental bone graft may be performed to reduce the loss of bone in the jaw after the tooth is extracted. Before the tooth is extracted, your doctor will talk to you about the options available to replace the tooth (e.g., dental bridges, dental implants).

How can this situation be reduced?

Although it is not possible to completely prevent the development of a Periapical Abscess, there are things we can do to reduce the risk:

  • Follow good oral hygiene habits: Brush your teeth twice a day for at least two minutes with a toothpaste that contains fluoride. Use dental floss to clean between your teeth.
  • Drink water containing fluoride: Fluoride strengthens teeth.
  • Limit sugary foods and drinks: Reducing sugary foods and drinks can help prevent tooth decay .
  • See a dentist for a check-up and cleaning: It is very important to have a dental check-up at least once a year, or at the interval recommended by your doctor. This way, any problems can be identified and treated as soon as they start.

How long can you go without treatment?

There is no exact time frame for this. For some people, the condition may worsen in a few weeks, for others, it may take months. However, delaying treatment increases the risk of serious, life-threatening complications such as ``Sepsis''. So, if you have symptoms, don't delay.

When should you see a dentist?

If you think you have symptoms of a `(Periapical Abscess)`, see a dentist immediately. The sooner you get treatment, the better the chance of saving the tooth and the less likely it is to develop complications.

When should you go to an Emergency Treatment Unit (ETU) ?

If you have the following symptoms, go to an emergency room immediately:

  • Fever
  • Feeling cold and shivering (Chills)
  • Nausea or vomiting
  • Severe pain that does not subside despite taking medication

These mean that the infection has become severe and is starting to affect other parts of the body.

What questions should you ask the doctor?

If you have a `(Periapical Abscess)`, it's a good idea to ask your doctor these questions:

  • Where do I have a `(Periapical Abscess)`?
  • Has the infection spread? If so, how far?
  • Do I need to take antibiotics?
  • Can my tooth be saved?
  • What treatment options do I have?
  • If a tooth has to be extracted, what are the options for replacing it?

How long does it take for this abscess to form?

The answer to this question varies from person to person. Some cavities can develop in a day or two. Others can develop without you even realizing it for weeks or months. If you notice anything different in your mouth or feel something is not right, see a dentist without delay.

Can an abscess like this develop after a `(Root Canal)` treatment?

Yes, it can happen. But most of the time it doesn't. If bacteria get back into the tooth during treatment, or if it takes too long to get a crown after a root canal, it can become infected again. Even if there is a root fracture, it can sometimes become infected again. If that happens, your doctor may recommend a second root canal or extraction.

Can a tooth abscess cause sinus symptoms?

Yes, it can happen. If your infected tooth is located behind your upper jaw, it is close to the air cavities on either side of your nose (`Maxillary Sinuses`). Then the infection in the tooth can spread to those `(Sinus)` cavities as well. That is why, even if you have a minor toothache, do not ignore it, and see a doctor as soon as possible.

Finally, things to remember

A periapical abscess is an infection that develops around the root of a tooth. It is often painful, but sometimes it can be painless. If you think you have this condition, it is important to see a dentist right away. Getting treatment early can help prevent the infection from spreading to other parts of your mouth and body. Your health is in your hands!


⚠️ Important: The medical articles and information on Nirogi Lanka are for general awareness only, and are by no means a substitute for professional medical advice, diagnosis, or treatment. For any medical problem you have, consult a qualified physician immediately.

💬 Comments (0)

No comments have been posted yet. Add your comment here for the first time.

Add your comment

Please calculate: 2 + 8 =