Root Canal Therapy
Root Canal Therapy
What happens during root canal treatment? Learn more about this quick, comfortable procedure that can relieve your pain and save your natural tooth by reading this section or watching this video.
Root Canals
Overview
There’s no need to be worried if your dentist or endodontist prescribes a root canal procedure to treat a damaged or diseased tooth. Millions of teeth are treated and saved this way each year, relieving pain and making teeth healthy again.
Inside your tooth, beneath the white enamel and a hard layer called dentin, is a soft tissue called pulp. This tissue contains blood vessels, nerves and connective tissue, which help grow the root of your tooth during its development. A fully developed tooth can survive without the pulp because the tooth continues to be nourished by the tissues surrounding it.
A modern root canal treatment is nothing like those old sayings! It’s very similar to a routine filling and can usually be completed in one or two appointments, depending on the condition of your tooth and your personal circumstances. Getting a root canal is relatively painless and extremely effective. You’ll be back to smiling, biting and chewing with ease in no time.
Saving the natural tooth with root canal treatment has many advantages:
- Efficient chewing
- Normal biting force and sensation
- Natural appearance
- Protects other teeth from excessive wear or strain
Normal Tooth Anatomy
Diseased Tooth
Root Canal Healed
Reproduced with permission from the American Association of Endodontists
It’s necessary to have endodontic or root canal treatment when the inside of your tooth (the pulp) becomes inflamed or infected as a result of deep decay, repeated dental procedures, faulty crowns or a crack or chip in the tooth. Trauma to your tooth may also cause pulp damage even if the tooth has no visible chips or cracks. If pulp inflammation or infection is left untreated, it can cause pain or lead to an abscess.
When you undergo a root canal or other endodontic treatment, the inflamed or infected pulp is removed and the inside of the tooth is carefully cleaned and disinfected, then filled and sealed with a rubber-like material called gutta-percha. Afterward, the tooth is restored with a crown or filling for protection and will continue to function like any other tooth.
Endodontic treatment helps you maintain your natural smile, continue eating the foods you love and limits the need for ongoing dental work. With proper care, most teeth that have had root canal treatment can last a lifetime.
Root Canal FAQ
- What is endodontic treatment?
- Why would I need an endodontic procedure like a root canal?
- What are the signs of needing endodontic treatment?
- How does endodontic treatment save the tooth?
- Will I feel pain during or after the procedure?
- Endodontic Procedure
- How much will the procedure cost?
- Will the tooth need any special care or additional treatment after endodontic treatment?
- What causes an endodontically treated tooth to need additional treatment?
- Can all teeth be treated endodontically?
What is endodontic treatment?
“Endo” is the Greek word for “inside” and “odont” is Greek for “tooth.” Endodontic treatment treats the inside of the tooth. To understand endodontic treatment, it helps to know something about the anatomy of the tooth. Inside the tooth, under the white enamel and a hard layer called the dentin, is a soft tissue called the pulp. The pulp contains blood vessels, nerves, and connective tissue and creates the surrounding hard tissues of the tooth during development. The pulp extends from the crown of the tooth to the tip of the roots where it connects to the tissues surrounding the root. The pulp is important during a tooth’s growth and development. However, once a tooth is fully mature it can survive without the pulp, because the tooth continues to be nourished by the tissues surrounding it.
Why would I need an endodontic procedure?
Endodontic treatment is necessary when the pulp, the soft tissue inside the root canal, becomes inflamed or infected. The inflammation or infection can have a variety of causes: deep decay, repeated dental procedures on the tooth, or a crack or chip in the tooth. In addition, an injury to a tooth may cause pulp damage even if the tooth has no visible chips or cracks. If pulp inflammation or infection is left untreated, it can cause pain or lead to an abscess.
What are the signs of needing endodontic treatment?
Signs and symptoms to look for include pain, prolonged sensitivity to heat or cold, tenderness to touch and chewing, discoloration of the tooth, and swelling, drainage and tenderness in the lymph nodes as well as nearby bone and gingival tissues. Sometimes, however, there may be no symptoms.
How does endodontic treatment save the tooth?
The endodontist removes the inflamed or infected pulp, carefully cleans and shapes the inside of the canal, a channel inside the root, then fills and seals the space. Afterwards, you will return to your dentist, who will place a crown or other restoration on the tooth to protect and restore it to full function. After restoration, the tooth continues to function like any other tooth.
Will I feel pain during or after the procedure?
Many endodontic procedures are performed to relieve the pain of toothaches caused by pulp inflammation or infection. With modern techniques and anesthetics, most patients report that they are comfortable during the procedure. For the first few days after treatment, your tooth may feel sensitive, especially if there was pain or infection before the procedure. This discomfort can be relieved with over-the-counter or prescription medications. Follow your endodontist’s instructions carefully. Your tooth may continue to feel slightly different from your other teeth for some time after your endodontic treatment is completed. However, if you have severe pain or pressure or pain that lasts more than a few days, call your endodontist.
Endodontic Procedure
Endodontic treatment can often be performed in one or two visits and involves the following steps:
- The endodontist examines and x-rays the tooth, then administers local anesthetic. After the tooth is numb, the endodontist places a small protective sheet called a “dental dam” over the area to isolate the tooth and keep it clean and free of saliva during the procedure.
- The endodontist makes an opening in the crown of the tooth. Very small instruments are used to clean the pulp from the pulp chamber and root canals and to shape the space for filling.
- After the space is cleaned and shaped, the endodontist fills the root canals with a biocompatible material, usually a rubber- like material called “gutta-percha.” The gutta-percha is placed with an adhesive cement to ensure complete sealing of the root canals. In most cases, a temporary filling is placed to close the opening. The temporary filling will be removed by your dentist before the tooth is restored.
- After the final visit with your endodontist, you must return to your dentist to have a crown or other restoration placed on the tooth to protect and restore it to full function. If the tooth lacks sufficient structure to hold the restoration in place, your dentist or endodontist may place a post inside the tooth. Ask your dentist or endodontist for more details about the specific restoration planned for your tooth.
How much will the procedure cost?
The cost varies depending on how complex the problem is and which tooth is affected. Molars are more difficult to treat, the fee is usually more. Most dental insurance policies provide some coverage for endodontic treatment. Generally, endodontic treatment and restoration of the natural tooth are less expensive than the alternative of having the tooth extracted. An extracted tooth must be replaced with a bridge or implant to restore chewing function and prevent adjacent teeth from shifting. These procedures tend to cost more than endodontic treatment and appropriate restoration. With root canal treatment you save your natural teeth and money.
Will the tooth need any special care or additional treatment after endodontic treatment?
You should not chew or bite on the treated tooth until you have had it restored by your dentist. The unrestored tooth is susceptible to fracture, so you should see your dentist for a full restoration as soon as possible. Otherwise, you need only practice good oral hygiene, including brushing, flossing, and regular checkups and cleanings. Most endodontically treated teeth last as long as other natural teeth. In a few cases, a tooth that has undergone endodontic treatment does not heal or the pain continues. Occasionally, the tooth may become painful or diseased months or even years after successful treatment. Often when this occurs, redoing the endodontic procedure can save the tooth.
What causes an endodontically treated tooth to need additional treatment?
New trauma, deep decay, or a loose, cracked or broken filling can cause new infection in your tooth. In some cases, the endodontist may discover additional very narrow or curved canals that could not be treated during the initial procedure.
Can all teeth be treated endodontically?
Most teeth can be treated. Occasionally, a tooth can’t be saved because the root canals are not accessible, the root is severely fractured, the tooth doesn’t have adequate bone support, or the tooth cannot be restored. However, advances in endodontics are making it possible to save teeth that even a few years ago would have been lost. When endodontic treatment is not effective, endodontic surgery may be able to save the tooth.
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