Cold sensitivity
A quick sharp feeling may come from sensitivity, gum recession, enamel wear, or a cavity.
Patient guide
Tooth pain can feel different from person to person
A toothache may feel like a quick zing with cold water, a dull ache that returns, pain when chewing, or a throb that keeps you awake. The best first step is not only to stop the pain. It is to understand why it started.
Understand symptoms
Learn what different pain patterns may suggest.
Know common causes
See the dental problems that often lead to toothache.
Choose the next step
Know when to book a dental visit and when pain needs quick care.
At Agrim Dental Clinic
A calm check-up can make the next step clear
Tooth pain can feel stressful because the cause is not always obvious from the outside. At your visit, the dentist checks the painful tooth, nearby gums, bite, old fillings or crowns, and may advise an X-ray only when it is useful.
The aim is simple: find the real reason for pain, explain it clearly, and choose treatment that protects your natural tooth whenever possible.
Pain patterns
What your tooth pain may be telling you
Dentists listen carefully to how pain behaves. These clues can help you explain the problem clearly, but they are not a final diagnosis by themselves.
Pain after hot or cold
Pain that stays after the drink or food is gone can mean the nerve is irritated.
Pain when biting
This may happen with a crack, deep cavity, gum problem, or a high filling or crown.
Throbbing or swelling
Strong throbbing, swelling, pus, fever, or a bad taste should be checked quickly.
Pain at the back
Pain around the last molar may come from a wisdom tooth or inflamed gum around it.
Pain with fever
Toothache with fever, swelling, or discharge needs prompt dental assessment.
Pain gives clues, not final answers
Two people can describe similar pain but have different dental problems. A dental examination, and sometimes an X-ray, helps confirm the real cause.
Common causes
Why a tooth may start hurting
Most tooth pain comes from one of these problems. The right treatment depends on what your dentist finds during the check-up.
Tooth decay or cavity
Tooth decay is one of the most common reasons a tooth begins to hurt. Early decay may not hurt at all. As it gets deeper, you may feel pain with sweets, cold drinks, hot food, or chewing.
If the decay is limited and the tooth can be restored, a tooth filling may be enough.
Irritated or infected tooth nerve
Deep decay, trauma, cracks, or old dental work can irritate the soft tissue inside the tooth. Pain may start on its own, linger after hot or cold, or become hard to ignore.
If the nerve is badly damaged or infected, root canal treatment may help save the tooth.
Dental abscess
An abscess is a collection of pus linked with infection. It may cause severe pain, swelling, tenderness, bad taste, fever, or feeling unwell.
The source of infection needs a proper dental check. Antibiotics are not for every toothache and should not be started on your own.
Cracked, chipped, or broken tooth
A tooth does not have to look badly broken to hurt. Small cracks can be hard to see and may cause sharp pain when pressure is applied or released during chewing.
Treatment depends on where the crack is, how deep it goes, and how much healthy tooth is still present.
Loose filling or crown problem
Fillings and crowns can loosen, break, or leak around their edges. You may notice new sensitivity, pain when biting, or food getting trapped around the tooth.
Sometimes a repair is enough. In other cases, the tooth underneath needs extra care.
Gum disease
Not every toothache starts inside the tooth. Inflamed gums and supporting tissues can also become painful, especially while chewing.
If tooth pain comes with bleeding gums, swollen gums, bad breath, or loose teeth, a gum disease check-up can help identify the cause.
Sensitive teeth or exposed roots
A quick sharp feeling from cold water does not always mean the tooth nerve is infected. Sensitivity can happen when enamel wears down or gums move away from the tooth.
Because cavities, cracks, and damaged fillings can feel similar, one-tooth sensitivity should still be checked if it keeps returning.
Wisdom tooth problems
A partly erupted or poorly positioned wisdom tooth can be difficult to clean. The gum around it may become irritated or infected, causing pain at the back of the jaw.
A wisdom tooth examination can show its position and whether treatment is needed. Not every wisdom tooth needs removal.
Grinding, clenching, or referred pain
Clenching, grinding, jaw strain, or sinus pressure can sometimes feel like toothache even when the tooth itself is not the main problem.
When the source is unclear, a careful dental check helps avoid unnecessary treatment on a healthy tooth.
Specific situations
What different tooth pain situations can mean
Why does my tooth hurt when I bite?
Pain while chewing can happen because of a cracked tooth, deep decay, inflammation around the root, gum disease, infection, or a problem with an existing filling or crown.
If the same tooth hurts every time you chew, avoiding that side is only temporary. Have it checked so the actual cause can be found.
Why does my tooth hurt with cold water?
Brief cold sensitivity can happen with exposed dentin, gum recession, enamel wear, or a cavity.
If the cold drink is gone but the tooth keeps hurting for a while, the nerve may be more irritated. That does not automatically mean root canal treatment, but it should be examined.
Why does my tooth throb at night?
Some people notice pain more while resting because there are fewer distractions. But pain that repeatedly interrupts sleep deserves attention because a deeper dental problem may need treatment.
My tooth hurts, but I cannot see a cavity. How is that possible?
Not all dental problems are visible in the mirror. A cavity may be between teeth, a small crack may be hard to see, or a problem may be under an old filling or crown.
Gum problems, clenching, and referred pain can also cause discomfort without a visible hole.
Does tooth pain mean I need a root canal?
No. A painful tooth might need sensitivity care, a filling, gum treatment, repair of an old restoration, wisdom tooth care, or another form of treatment.
Root canal treatment becomes relevant when the tooth nerve is badly inflamed, infected, or damaged. The decision should come after diagnosis.
Can tooth pain go away by itself?
Sometimes mild pain from trapped food or temporary irritation may settle. But pain stopping does not always mean the problem has healed.
Cavities, cracks, and nerve problems can produce symptoms that come and go. If pain was strong, returns often, or lasts more than a day or two, arrange a dental check-up.
Before your visit
What you can do safely at home
Home care can help you stay comfortable for a short time, but it does not fix the reason for tooth pain.
- Keep the mouth clean.
- Rinse gently with warm salt water.
- Brush and floss carefully to remove trapped food.
- Choose softer foods and avoid chewing directly on the painful tooth.
- Avoid very hot, cold, sweet, or hard foods if they trigger pain.
- Use a cold compress outside the cheek after dental injury if appropriate.
- Use pain medicine only as directed on the label or by your dentist.
What to avoid
Do not put aspirin directly on the gum or tooth. Do not start antibiotics on your own. Do not keep delaying care if the pain is strong, keeps returning, or comes with swelling.
Medicine safety matters
If you are pregnant, have medicine allergies, kidney or stomach problems, take blood-thinning medicine, or have another medical condition, ask a dentist, doctor, or pharmacist before choosing pain medicine.
Braces soreness
What if my teeth hurt after braces are adjusted?
Some tenderness after braces are fitted or adjusted can be normal. Orthodontic treatment applies gentle controlled pressure to move teeth, so temporary soreness can happen.
When to check with your dentist
Severe pain, swelling, pain that keeps getting worse, one tooth becoming unusually painful, or an appliance causing injury should be discussed with your orthodontist or dentist.
Dental check-up
How dentists find the real cause
Your dentist may ask about when the pain started, what triggers it, how long it lasts, and whether there is swelling or biting pain.
Where exactly does it hurt?
When did the pain begin?
Does cold, heat, sweetness, or chewing trigger it?
Does the pain stop quickly or continue afterward?
Have you noticed swelling, fever, discharge, injury, or a broken filling?
Clinical examination
The dentist checks the tooth, gums, bite, old fillings, crowns, and surrounding tissues.
Simple tests
Cold, tapping, biting, or gum checks may help locate the painful tooth.
X-ray when needed
An X-ray can show deep decay, infection around the root, bone changes, or wisdom tooth position.
Treatment options
How tooth pain may be treated
There is no single treatment for toothache. Treatment depends on the diagnosis and on whether the tooth can be restored predictably.
Filling or restoration repair
A cavity may need a filling. A loose or broken filling or crown may need repair or replacement.
Gum or cleaning care
Gum-related pain may need professional cleaning, gum treatment, or better control of inflammation.
Root canal or wisdom tooth care
Serious nerve infection may need root canal treatment. A problem wisdom tooth may need planned management.
Extraction only when needed
If a tooth cannot be saved safely, extraction may be discussed. The goal is to preserve natural tooth structure whenever possible.
When to book
When should I see a dentist for tooth pain?
Arrange a dental examination if the pain is not clearly settling or if it keeps coming back.
- The pain lasts longer than a day or two.
- The pain repeatedly returns.
- You have pain when biting.
- Hot or cold sensitivity keeps lingering.
- The toothache wakes you at night.
- Your gums are red, swollen, or bleeding.
- You notice bad taste, discharge, a cracked tooth, or swelling.
Urgent signs
Book a dental visit
When tooth pain needs quick dental attention
Book urgent dental care if tooth pain comes with facial swelling, fever, pus, bad taste, trouble opening your mouth, injury, or severe pain that does not settle.
Seek urgent medical attention if swelling around your mouth, face, or neck is quickly increasing or makes it hard to breathe, swallow, or speak.
Kathmandu dental care
Tooth pain consultation at Agrim Dental Clinic
If your tooth hurts and you are unsure what is causing it, start with a dental examination rather than trying to choose your own treatment.
Agrim Dental and Multispecialty Dental Clinic provides tooth-pain consultations at the Ghattekulo branch and Thamel branch. You can visit the branch that is easier for you for a routine dental check-up or tooth-pain visit.
After examining the tooth, the dentist can explain the findings and discuss suitable options. Depending on the diagnosis, this may include observation, sensitivity care, professional cleaning, a filling, restoration repair, gum treatment, root canal treatment, wisdom tooth care, or another appropriate approach.
Frequently asked questions
Common Questions About Tooth Pain
Why has my tooth suddenly started hurting?
Sudden tooth pain can have several causes, including decay, a crack, irritated tooth nerve, trapped food, gum problems, sensitivity, or damage to an old filling or crown. The timing and trigger of the pain can give clues, but a dental check is usually needed to find the cause.
Why does my tooth hurt when I bite down?
Possible causes include a cracked tooth, cavity, inflammation around the root, gum disease, infection, or a problem with an existing filling or crown. Persistent biting pain should be examined.
Why does cold water hurt one tooth?
Cold sensitivity may come from exposed dentin, gum recession, decay, cracks, or another problem involving that tooth. Sensitivity that continues after the cold is gone deserves closer assessment.
Does throbbing tooth pain mean I have an infection?
It can happen with strong inflammation or infection, especially when there is swelling, fever, discharge, or a bad taste. Throbbing pain alone cannot confirm the diagnosis.
Why is my toothache worse at night?
Dental pain may feel stronger while you are resting, but pain that repeatedly disturbs sleep should be assessed because there may be an underlying problem that needs treatment.
Does every painful tooth need root canal treatment?
No. Tooth pain has many causes. Root canal treatment is considered when the nerve inside the tooth is badly inflamed, infected, or damaged based on a clinical assessment.
Do I need antibiotics for tooth pain?
Not always. Many toothaches need treatment of the tooth itself rather than antibiotics. Whether antibiotics are appropriate depends on the diagnosis, so they should not be self-started simply because a tooth hurts.
Is tooth pain normal with braces?
Temporary pressure or tenderness after braces are fitted or adjusted can happen. Severe, persistent, or worsening pain, significant swelling, or unusual pain in one tooth should be discussed with your orthodontist or dentist.
Should I still see a dentist if my toothache has stopped?
Yes, if the pain was severe, kept returning, lasted more than a day or two, or came with swelling, biting pain, or other concerning symptoms. Reduced pain does not always mean the underlying problem is fixed.