Short answer: Toothache can be caused by tooth decay, inflammation of the dental pulp, a cracked or broken tooth, gum disease, or infection. If pain lasts longer than two days, becomes progressively worse, is especially painful when biting, or is accompanied by facial or jaw swelling and fever, a dental assessment is needed. Severe swelling in the mouth, throat, or neck, or difficulty breathing or swallowing, may require urgent medical care.
Toothache can range from a few seconds of sensitivity to hot or cold to a constant, throbbing pain that wakes you at night. The character of the pain can provide clues, but a diagnosis cannot be made from the description alone.
Why do teeth hurt?
Common causes include:
- Tooth decay,
- Inflammation of the pulp, the nerve and blood-vessel tissue inside the tooth,
- Infection around the tooth root,
- A cracked or broken tooth,
- Problems with fillings or other restorations,
- Gum and periodontal disease,
- Inflammation around a wisdom tooth,
- Teeth clenching or grinding,
- Trauma to the teeth or jaw.
Sinus problems and temporomandibular joint disorders can also produce pain that some people perceive as coming from a tooth.
When is hot or cold sensitivity important?
Brief sensitivity to a cold drink or something sweet can occur for different reasons, including gum recession, enamel wear, or early decay. Sensitivity that disappears almost immediately after the stimulus is removed is different from intense pain that continues for several minutes.
If pain lingers after hot or cold contact, starts spontaneously without a trigger, or is especially noticeable at night, the dental pulp may be more significantly affected. A dental examination should not be delayed.
Does throbbing tooth pain mean there is an abscess?
Throbbing pain can occur with inflammation of the pulp or tissues around the tooth root, but throbbing does not automatically mean an abscess is present. A dental abscess is a collection of pus caused by infection in or around a tooth and is diagnosed through clinical examination and, when appropriate, dental imaging.
Symptoms that can accompany an abscess include:
- Swelling of the gum, cheek, or jaw,
- Pain when biting or chewing,
- Sensitivity to hot and cold,
- An unpleasant taste or drainage in the mouth,
- Fever,
- Tiredness or feeling unwell,
- Tender lymph nodes in the neck.
Even if an abscess drains and the pain decreases, the source of the infection may still remain.
Does every toothache require antibiotics?
No. A large proportion of toothaches are caused by a problem inside the tooth or in the surrounding tissues that requires dental treatment. Antibiotics do not correct a structural or mechanical dental problem.
The need for antibiotics is decided after considering the spread of infection, fever and other systemic symptoms, immune status, and examination findings. Taking antibiotics left over from a previous illness or using someone else's prescription is not appropriate. Unnecessary antibiotic use also increases the risk of side effects and antimicrobial resistance.
What can you safely do at home for toothache?
Until you can see a dentist, the goal is not to treat the cause at home but to protect the area and manage symptoms safely.
- Continue oral hygiene and do not stop cleaning the painful area completely.
- Avoid very hot, very cold, and excessively sugary foods.
- Do not chew hard foods on the painful side.
- If you know a pain reliever is safe for you, use it only according to the package directions or advice from a health professional.
- If the face is swollen, do not apply intense heat directly to the area.
Putting aspirin or another medicine directly on the gum can cause chemical tissue injury. Applying alcohol, cologne, concentrated essential oils, or unknown mixtures is also unsafe.
What happens during a dental examination?
The dentist asks when the pain started, how long it lasts, whether it gets worse at night, whether hot or cold affects it, and whether biting changes the pain. The teeth and gums are then examined.
When needed, the dentist may use:
- Cold or electric pulp testing,
- Tapping and bite tests,
- Periodontal measurements,
- Periapical or panoramic dental radiographs.
The purpose is not merely to identify which tooth seems to hurt but to determine the true source of the pain.
What treatment options are available?
Depending on the diagnosis, treatment may include:
- Removing decay and placing a filling,
- Root canal treatment,
- Gum or periodontal treatment,
- Drainage of an abscess,
- Restorative treatment for a crack or fracture,
- Extraction of a tooth that cannot be predictably saved.
Not every toothache requires a root canal or extraction.
If the toothache suddenly stops, is the problem gone?
Not necessarily. After severe inflammation of the pulp, the nerve tissue inside a tooth can lose vitality and the pain may temporarily decrease. Infection can still develop around the root. A tooth that was extremely painful for several days and then becomes quiet has not necessarily healed.
When should you see a dentist the same day?
A prompt dental assessment is appropriate when:
- Toothache lasts longer than two days,
- Pain remains severe despite pain relief,
- Biting causes marked pain,
- The gum is clearly swollen or red,
- There is an unpleasant taste or drainage,
- The cheek or jaw is swollen,
- Fever or significant tiredness is present,
- The tooth has recently been injured.
Which symptoms may require urgent medical care?
Dental infections can rarely spread into the floor of the mouth, face, or neck. Seek urgent medical assessment particularly if there is:
- Rapidly increasing swelling of the mouth, under the tongue, throat, or neck,
- Difficulty breathing,
- Inability to swallow or to swallow saliva,
- Severe swelling extending toward the eye,
- Uncontrolled bleeding,
- Major facial or jaw trauma.
How can toothache be prevented?
Not every cause of toothache can be prevented, but the risk of problems related to tooth decay and gum disease can be reduced by:
- Brushing twice a day with fluoride toothpaste,
- Cleaning between the teeth every day,
- Reducing how frequently sugary foods and drinks are consumed,
- Attending regular dental check-ups,
- Using an appropriate mouthguard during sports or activities with a risk of dental trauma,
- Seeking assessment if you regularly clench or grind your teeth.
Conclusion
Toothache is not a diagnosis in itself; it is a symptom shared by many different dental problems. Rather than simply suppressing the pain, the cause should be identified. Persistent or recurring toothache, especially when accompanied by swelling or fever, should be assessed by a dentist. Difficulty breathing or swallowing and other alarm symptoms require urgent medical help.
Frequently asked questions
How long can you wait with a toothache?
A dental assessment is recommended when pain lasts longer than two days or is becoming more severe. Seek care sooner if swelling, fever, or a decline in general condition is present.
Why does toothache get worse at night?
Conditions such as pulp inflammation may feel more intense at night. Lying down and having fewer distractions can also influence how pain is perceived. The exact cause requires examination.
Does a painkiller treat the tooth?
No. A pain reliever may temporarily reduce symptoms but does not remove a cause such as decay, infection, or a crack.
If a dental abscess bursts, is it cured?
Pain may improve because pressure decreases, but the source of infection can persist and flare again.
Will antibiotics completely cure toothache?
Antibiotics are used only when appropriate for a bacterial infection and do not replace definitive dental treatment for most dental problems.
Can facial swelling come from a tooth?
Yes. Dental infections can cause swelling of the face or jaw. Rapidly increasing swelling is especially important and should be assessed promptly.
