Short answer: Tooth roots left in the mouth can cause abscesses, cysts and bone loss without causing pain because of the bacteria inside them. If the root is sound and long enough, it can be saved with root canal treatment and a crown; otherwise extraction is recommended. Extraction of a tooth with only the root left is done under local anesthesia, with special instruments or a minor surgical procedure. An implant, bridge or denture can then be considered to replace it.
The crown of a severely decayed or broken tooth can be lost completely over time, leaving only one or more root fragments inside the jawbone. Because these roots often do not hurt, they may stay in the mouth unnoticed or be put off for a long time. Yet extraction of a retained tooth root is, in most cases, a procedure that should not be postponed if you want to protect your oral health. In this article we explain why root fragments can cause problems, how the extraction is done, what you may feel during and after the procedure, and which options can be considered to replace the extracted root.
Why is a retained root dangerous?
Root fragments left in the mouth can be a silent source of infection because of the dead nerve tissue inside them and the bacteria that build up on their exposed surfaces; this infection can lead to an abscess, a cyst or bone loss at the root tip. The fact that a fragment does not hurt does not mean there is no problem.
The main problems root fragments can cause are:
- Chronic infection: Bacteria inside the root can spread from the root tip to the surrounding bone and form inflammatory lesions. These lesions can grow for a long time without symptoms.
- Abscess and swelling: When the body's resistance drops, the silent infection can flare up and cause facial swelling, pain and fever.
- Cyst formation: Long-standing inflammation can, in some cases, set the stage for a cyst to develop around the root.
- Bone loss: Inflammation can reduce the amount of bone needed later for treatments such as implants.
- Soft tissue irritation: The sharp edges of the root can rub against the tongue and cheek and cause sores.
- Effect on neighboring teeth: Plaque building up around the fragment can make cavities and gum problems in neighboring teeth more likely.
- Bad breath: Debris collecting around the root and infection can contribute to persistent bad breath.
Does every root have to be extracted?
Not every root fragment necessarily has to be extracted. If the root is long enough, the bone around it is healthy and the root is sound, it may be possible to save the tooth with root canal treatment, a post placed inside the root and a crown on top. In some cases, a minor gum procedure to increase the part of the tooth above the gum line, or pulling the root upward orthodontically, may be considered. For small root fragments that are very deep, close to important structures such as a nerve or the sinus and cause no symptoms, the dentist may recommend regular X-ray monitoring instead of extraction. These decisions are made based on the examination and imaging.
How is a tooth with only the root left extracted?
Extraction of a retained root is done under local anesthesia, either directly with special instruments or with a minor surgical procedure in which the gum is lifted, depending on the position and condition of the root. Because there is no crown, it may require a little more planning than a conventional tooth extraction.
- Imaging: An X-ray is used to assess the length of the root, how many pieces it is in, its position in the bone and its relationship to surrounding structures. If deemed necessary, a 3D CT scan may be requested.
- Anesthesia: The area is numbed with local anesthesia; the procedure begins only once the area is fully numb.
- Loosening the root: The connective tissue between the root and the bone is gently separated with thin instruments called elevators.
- Removal: The root is removed with controlled movements using special root forceps or elevators.
- Surgical approach (if needed): If the root is deep in the bone, brittle or curved, the gum is lifted with a small incision and, if necessary, a very small amount of the surrounding bone is removed. In molars with more than one root, the roots can be separated and removed one by one.
- Cleaning and closure: Inflamed tissue in the extraction socket is cleaned out; sutures are placed if needed, and gauze is placed in the socket to stop the bleeding.
The extraction time can vary from a few minutes to longer, depending on the position and number of roots. If an implant is planned for the future, a graft to preserve bone volume in the extraction socket can also be considered in the same session.
Is root extraction painful?
Because root extraction is done under local anesthesia, pain is generally not felt during the procedure; what you feel is mostly pressure and pushing. Once the anesthetic has taken effect, the dentist begins the procedure after making sure the area is completely numb.
Some situations can make numbing more difficult. If there is an active, severe infection, the anesthetic may work less effectively because of the acidic environment of the inflamed tissue. In such cases the dentist may recommend bringing the infection under control first and schedule the extraction for a few days later. If you feel any pain during the procedure, just tell your dentist; additional anesthetic can be given.
After the anesthetic wears off, especially in extractions that required a surgical approach, tenderness and mild swelling lasting a few days can be expected. Your dentist will tell you which pain reliever is suitable for you during this period. For people with high dental anxiety, discussing this with the dentist before the extraction helps the process go more calmly.
What should you pay attention to after root extraction?
After root extraction, the most important goal is to protect the blood clot that forms in the extraction socket; that is why on the first day you should not rinse your mouth, spit, drink through a straw or smoke.
- Gauze: Keep gentle biting pressure on the gauze placed over the extraction site for as long as your dentist recommends.
- Cold compresses: In the first hours, applying cold intermittently over the cheek helps reduce swelling.
- Eating: Do not eat until the anesthetic wears off. On the first day, choose lukewarm, soft foods; avoid very hot, hard and spicy foods.
- Oral hygiene: Keep brushing your other teeth, but do not touch the extraction site on the first day. In the following days you can rinse gently as your dentist recommends.
- Smoking and alcohol: These can delay healing and increase the risk of dry socket; they should definitely be avoided in the first days.
- Physical activity: Avoiding strenuous exercise on the first day reduces the risk of bleeding.
- Medications: Take prescribed medications as your dentist recommends.
If you have severe pain that starts two or three days after the extraction and gets worse, bleeding that does not stop, increasing swelling or fever, you should contact the clinic. If sutures were placed, they are usually removed at a follow-up appointment about a week later.
What can replace the extracted root?
Depending on the location of the gap, the condition of the neighboring teeth and the amount of bone, options such as an implant, a fixed bridge or a removable denture can be considered to replace the extracted root. Leaving the gap unfilled for a long time can cause neighboring teeth to tilt and the opposing tooth to over-erupt into the space.
- Implant: An option that replaces the missing tooth without touching the neighboring teeth. It can be planned after the extraction site has healed or, in suitable cases, in the same session as the extraction.
- Fixed bridge: The neighboring teeth are reduced and the missing tooth is replaced by a bridge supported by these teeth. This can be a suitable option if the neighboring teeth already have large fillings or crowns.
- Removable denture: Can be used when more than one tooth is missing or when other options are not suitable.
- Orthodontic space closure: In some cases, especially when there is also crowding, the gap can be closed by moving the neighboring teeth with orthodontic treatment.
Which option suits you is decided together by evaluating your mouth and your expectations. You can find answers to other common questions about extraction and aftercare on our frequently asked questions page.
When should you see a dentist about a retained root?
If you know you have a tooth root in your mouth whose crown has been lost, or if you feel a sharp edge with your tongue, it is wise to have an examination even if there is no pain, to find out whether the root can be saved or needs to be extracted. If there is gum swelling, a bad taste or discharge, this evaluation should not be postponed. At our polyclinic in Oran, Çankaya, the root fragment is examined with an X-ray; if extraction is needed, how the procedure will be done and how the gap can be restored afterwards are discussed in advance.
Frequently asked questions
Should a tooth root that doesn't hurt be extracted?
The absence of pain does not mean the root is problem-free; root fragments can be a source of infection for a long time without symptoms. Whether the root can be saved or needs to be extracted is determined by an X-ray and examination. For some deep fragments without symptoms, monitoring may also be recommended.
How long does root extraction take?
The time varies depending on the position and number of roots and their condition in the bone. A single easily accessible root can be removed quickly, while the procedure can take longer for deep or brittle roots that require a surgical approach.
Are stitches needed after root extraction?
Stitches may be placed when a surgical approach is required or a large extraction socket is created. Stitches are usually removed at a follow-up appointment about a week later. In some cases, self-dissolving stitches are used.
Can a denture be made over a root fragment?
Making a prosthesis over an infected root can lead to problems such as pain and swelling later on. If the root is sound, it can be used with root canal treatment and a post as support for a crown or a denture. The decision is made after an examination and X-rays.
