Dental Abscess in Singapore
PENN PACIFIC DENTAL CENTER · 160 ROBINSON ROAD · NEAR TANJONG PAGAR MRT
A dental abscess is an infection that will not resolve on its own. Antibiotics can reduce swelling temporarily but will not clear the source of infection. The tooth needs to be assessed and treated as soon as possible. Many dental abscesses can still be treated successfully if seen early.
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📍 Near Tanjong Pagar MRT · Singapore CBD · 160 Robinson Road
What is a dental abscess?
A dental abscess is a collection of pus caused by a bacterial infection inside the tooth, in the gum, or in the bone surrounding the tooth root. It develops when bacteria enter the dental pulp through decay, a crack, or a damaged filling, and spread beyond the root into the surrounding tissue.
Periapical abscess
The most common type. Infection originates inside the tooth pulp and spreads to the tip of the root, forming a pocket of pus in the surrounding bone. This is the type most commonly treated with root canal treatment.
Periodontal abscess
Infection originating in the gum or bone beside the tooth, often associated with gum disease. This type requires a different treatment approach from a periapical abscess.
Why it does not go away on its own
An abscess forms because the body cannot clear the source of infection on its own. The bacteria are inside the tooth or bone, beyond the reach of the immune system. Without treatment to address the source, the infection will persist, and in some cases spread to surrounding teeth, the jaw, or other structures.
What are the symptoms of a dental abscess?
Symptoms vary depending on the type and stage of the abscess. Common signs include:
Pain
Persistent, throbbing toothache that may radiate to the jaw, neck, or ear. Pain that is severe at night or wakes you from sleep is a common sign that infection is present.
See our tooth pain at night page for more information.
If pain comes on suddenly and intensifies rapidly, this may also present as sudden severe tooth pain.
Swelling
Swelling of the gum, face, or jaw near the affected tooth. Facial swelling that spreads or causes difficulty swallowing or breathing requires immediate medical attention, not just a dental appointment.
Pain on biting or pressure
The affected tooth may feel raised or different when biting down. Pressure on the tooth is often painful. Sensitivity to heat may also be present. A tooth with an abscess has often already lost sensitivity to cold as the pulp has died.
If biting pain is your main symptom, see our pain when chewing or biting page.
Sinus tract (fistula)
A small pimple-like bump on the gum near the affected tooth. This is a sinus tract, a channel through which the abscess is draining. Its presence means infection is active. The tooth still needs treatment even if the pain has reduced, because drainage does not mean the infection has cleared.
No pain does not mean no infection
Some abscesses cause little or no pain, particularly if the pulp has died and the nerve is no longer active. The absence of pain does not mean the infection has resolved. A periapical abscess can be present for months or years without significant symptoms while continuing to cause bone loss around the root.
Why antibiotics alone will not resolve a dental abscess
Antibiotics are sometimes prescribed to manage a dental abscess, particularly to reduce acute swelling before treatment or when infection has spread beyond the tooth. They are useful in these situations, but they do not treat the source of the infection.
The bacteria causing a periapical abscess are inside the root canal system of the tooth, in an environment where blood supply is absent or compromised. Antibiotics travel through the bloodstream and cannot reach bacteria effectively in this location. Once the antibiotics are stopped, the infection returns.
The only way to resolve a periapical abscess is to remove the infected tissue from inside the tooth through root canal treatment, or to extract the tooth. Antibiotics alone are a temporary measure, not a solution.
What happens if treatment is delayed
Untreated dental infection can spread to surrounding bone, adjacent teeth, and in serious cases to the jaw, neck, or airway. Spread of infection beyond the tooth is a medical emergency. Early treatment of a dental abscess is always preferable to managing the consequences of delayed care.
How is a dental abscess treated?
Treatment depends on the type and severity of the abscess and the condition of the affected tooth.
Root canal treatment
For a periapical abscess where the tooth can be saved, root canal treatment removes the infected pulp tissue from inside the tooth, cleans and disinfects the canal system, and seals the tooth to prevent reinfection. This allows the bone around the root to heal over time. A crown or restoration is typically placed afterwards to protect the tooth.
Extraction
If the tooth cannot be saved due to the extent of infection, fracture, or bone loss, extraction may be the appropriate option. This removes the source of infection entirely. Replacement options can be discussed once the area has healed.
Incision and drainage
In cases where significant swelling is present, incision and drainage of the abscess may be carried out to relieve pressure and reduce acute infection before definitive treatment. This is a temporary measure and is followed by treatment of the underlying cause.
Imaging
X-rays and in many cases a cone beam CT scan are taken to assess the extent of infection, the condition of the surrounding bone, and the anatomy of the root canal system. This helps plan the most appropriate course of treatment.
Treating dental abscesses at Penn Pacific Dental Center
Dr. Barry Yu
Dr. Barry Yu completed his dental training at the University of Pennsylvania School of Dental Medicine. His clinical focus is root canal treatment and restorative care. He performs root canal procedures under a dental operating microscope and uses cone beam CT imaging as part of his assessment and treatment workflow, which is particularly valuable in abscess cases where the extent of infection and bone involvement needs to be clearly understood before treatment begins.
Penn Pacific Dental Center is at 160 Robinson Road in Singapore's CBD, a short walk from Tanjong Pagar MRT.
Common questions about dental abscesses in Singapore
Should I go to A&E for a dental abscess?
It depends on your symptoms. If you have difficulty swallowing or breathing, swelling that is spreading rapidly beyond the jaw, or a high fever, go to A&E immediately as these are signs the infection has spread beyond the tooth. For localised swelling, pain, or a pimple on the gum without these symptoms, contact a dentist for an urgent assessment as soon as possible rather than waiting at A&E.
Can a dental abscess burst on its own?
Yes, an abscess can burst and drain on its own through a sinus tract in the gum. When this happens the pain may reduce significantly, but this does not mean the infection has cleared. The source of infection is still inside the tooth or bone. The tooth still needs to be assessed and treated even if the pain has subsided.
Can a dental abscess go away on its own?
No. A dental abscess will not resolve without treatment. The infection may appear to improve temporarily, particularly if the abscess drains on its own, but the source of infection remains inside the tooth or surrounding bone. Without treatment the infection will persist and can worsen over time.
Will antibiotics cure a dental abscess?
Antibiotics can reduce swelling and manage acute infection temporarily, but they cannot reach the bacteria inside the root canal system effectively. Once antibiotics are stopped, the infection returns. The source of infection needs to be treated through root canal treatment or extraction.
How do I know if I have a dental abscess?
Common signs include persistent throbbing toothache, swelling of the gum or face, severe sensitivity to hot, cold, or pressure, and a small pimple-like bump on the gum near the affected tooth. Some abscesses cause little or no pain if the nerve has died. If you suspect an abscess, the tooth needs to be assessed as soon as possible.
Is a dental abscess dangerous?
Left untreated, a dental abscess can spread to surrounding bone, adjacent teeth, and in serious cases to the jaw, neck, or airway. Facial swelling that spreads rapidly or causes difficulty swallowing or breathing requires immediate medical attention. Early treatment is always preferable.
Can I keep the tooth if I have an abscess?
In many cases yes. If the tooth structure is intact and there is sufficient bone support, root canal treatment can clear the infection and allow the surrounding bone to heal. Whether the tooth can be saved depends on the extent of the infection and the condition of the tooth, which can only be determined through a proper assessment.
Is Penn Pacific Dental Center near Tanjong Pagar MRT?
Yes. The clinic is at 160 Robinson Road, #05-14 SBF Center, a short walk from Tanjong Pagar MRT (East-West Line). It is also accessible from Shenton Way MRT (Thomson-East Coast Line) and Telok Ayer MRT (Downtown Line).