Root canal treatment is used to treat the inside of a tooth when the dental pulp has become irreversibly inflamed, infected or damaged.
The aim is to remove the affected tissue, disinfect the internal root canal system and seal the tooth so it can remain in the mouth.
Root canal treatment can often save a tooth that might otherwise require extraction.
At Dental Seasons, we first assess whether the tooth can reasonably be restored and whether root canal treatment is the appropriate option.

Inside each natural tooth is a space containing soft tissue known as the dental pulp.
The pulp contains nerves, blood vessels and connective tissue.
It extends from the crown of the tooth down through small canals within the roots.
The pulp can become inflamed or infected because of:
Once the pulp is irreversibly damaged, it cannot simply heal in the same way as a minor surface injury.
Possible symptoms include:
However, not every tooth needing root canal treatment is painful.
Some infections are identified during a dental examination or X-ray before severe symptoms develop.

If the pulp inside a tooth is irreversibly damaged or infected, the main options commonly become root canal treatment and restoration of the tooth, or removal of the tooth.
Keeping a suitable natural tooth avoids creating a missing-tooth space. However, saving a tooth is only sensible if the remaining tooth can be restored and has a reasonable prognosis.
A root canal should not be performed simply to keep a tooth that cannot subsequently be restored.
Assessment may include:
In selected complex cases, additional imaging or specialist endodontic assessment may be helpful.
The aim is to determine whether the dental pulp is likely to recover or whether irreversible damage or infection is present.
The tooth is numbed to keep treatment comfortable.
A rubber dam is placed around the tooth.
This helps keep saliva and bacteria away from the treatment area and helps protect the mouth while small instruments and disinfecting solutions are used.
An opening is made into the tooth so the internal root canal system can be reached.
Inflamed or infected pulp tissue is removed.
The canals are carefully cleaned, disinfected and shaped.
Once adequately prepared, the canals are sealed with a root filling material, commonly gutta-percha.
The tooth requires a suitable restoration after root canal treatment.
Depending on the remaining tooth structure, this may involve a filling, onlay or dental crown.
Root canal treatment may sometimes be completed in one appointment.
Other teeth require multiple visits.
The number of appointments depends on:
A temporary filling may be placed between visits when treatment is being completed over multiple appointments.
Local anaesthetic is used to make the procedure comfortable.
A tooth that is severely inflamed or infected can occasionally be more difficult to anaesthetise, and additional techniques may be required.
Some tenderness after treatment can occur, particularly if the tooth was painful beforehand.
Contact us if pain is severe, worsening or does not settle as expected.
Root canal treatment should not be promoted as universally pain-free, but modern anaesthesia allows most treatment to be performed comfortably.
Rubber dam isolation is an important part of root canal treatment.
It helps:
For these reasons, rubber dam is routinely associated with appropriate root canal treatment.
Not every root canal treated tooth requires the exact same restoration.
The decision depends on:
Back teeth often require greater protection after root canal treatment because they experience substantial chewing forces and may already have lost significant tooth structure.
A crown or onlay may therefore be recommended.
Front teeth with substantial healthy structure remaining may sometimes be restored differently.
If the pulp is irreversibly damaged, simply placing a normal filling does not remove the diseased tissue inside the roots.
The main alternative is generally extraction.
After extraction, the missing space may be:
The best decision depends on the condition and prognosis of the tooth as well as the consequences of removing it.
Yes.
Root canal treatment can provide long-term service for many teeth, but success cannot be guaranteed.
Problems can occur because of:
If a root canal treated tooth develops a new problem, options may include retreatment, endodontic surgery, specialist assessment or extraction depending on the circumstances.
An endodontist is a registered dental specialist with additional training in root canal treatment.
Referral may be considered when:
Referral does not necessarily mean the tooth cannot be saved.
It means the case may benefit from specialist expertise.
Severe dental pain or swelling should be assessed promptly.
Not every toothache requires root canal treatment, so diagnosis is important before deciding on treatment.
If you have facial swelling associated with difficulty breathing or swallowing, seek urgent medical care or call 000.
Dental Seasons is located at 119A Brighton Road, Sandgate QLD 4017.
We assess and treat suitable root canal cases for patients from Sandgate and surrounding North Brisbane and bayside communities.
More complex cases may be referred to an endodontist where specialist care is appropriate. See also our restorative dentistry services.
Root canal treatment removes damaged or infected pulp tissue from inside a tooth, cleans and disinfects the root canal system and seals the space.
Symptoms can include persistent pain, prolonged hot or cold sensitivity, swelling or pain when biting. Some affected teeth have few symptoms, so examination and X-rays are often required.
Local anaesthetic is used during treatment. Some tenderness after treatment can occur.
It may take one or several appointments depending on the tooth and clinical situation.
Possibly. The appropriate final restoration depends on the location of the tooth and how much healthy tooth structure remains. Read about crowns.
Extraction is a valid alternative in some circumstances. Root canal treatment may allow a restorable natural tooth to remain in the mouth. Read about tooth extractions.
Antibiotics do not remove infected or irreversibly damaged pulp tissue from inside the root canal system. Definitive dental treatment is usually required.
Yes. Reinfection can occur and may require further treatment.
There is no guaranteed lifespan. Long-term outcome depends on the root canal treatment, final restoration, remaining tooth structure, oral hygiene and other factors.
An endodontist is a registered dental specialist with advanced training in root canal and related treatment.

The first step is establishing what is happening inside the tooth and whether it can reasonably be saved. Book an assessment at Dental Seasons and we can examine the tooth, explain the findings and discuss root canal treatment, extraction or other appropriate options.