Toothache often gets worse at night, when clinics are closed and there is nothing to do but wait. Eating, talking, sleeping and even cold air can hurt. The good news is that most toothaches are easy and inexpensive to treat if the cause is found early. The risk is that a painkiller brings relief, the appointment gets postponed, and the cavity reaches the nerve.
This guide explains why teeth hurt, what different kinds of pain usually mean, what you can safely do before seeing a dentist, and which symptoms should never wait.
In a hurry? The 30-second version
- If the pain lasts more than 1–2 days, do not rely on home remedies. Only a dentist can treat the cause.
- A warm salt-water rinse and a cold compress on the outside of the cheek can give temporary relief.
- Swelling of the face or neck, fever, or trouble opening your mouth or swallowing means you should be seen the same day.
- Not every toothache needs a root canal. An early cavity usually needs only a filling.
Why do teeth hurt?
A tooth has three layers: the hard outer enamel, the dentin beneath it, and the pulp at the centre, which holds nerves and blood vessels. Real pain usually begins when decay, a crack, an injury or bacteria get through the enamel and dentin and reach the pulp. No pain in the early stage does not mean there is no problem.
Common causes of toothache
1. Cavities (tooth decay). Bacteria in plaque turn sugar and starch into acid, which dissolves enamel. Early on you only feel cold or hot sensitivity. Later the pain becomes constant.
2. Inflamed or infected nerve (pulpitis). When decay reaches the nerve, the pain is sharp or throbbing and often worse when lying down. This usually needs root canal treatment.
3. Dental abscess (pus at the root). A pocket of pus forms near the root. Signs include severe pain, a pimple-like bump or swelling on the gum, a bad taste, and sometimes fever. An abscess can spread, so do not wait it out.
4. Cracked or broken tooth. Hard food, an injury or night-time grinding (bruxism) can cause hairline cracks you cannot see. Typical signs are a sharp pain when you bite and pain when you release.
5. Gum disease. Tartar under the gums causes swelling, bleeding when brushing and, in later stages, loose teeth. It needs scaling or deep cleaning.
6. Tooth sensitivity. Worn enamel, hard brushing, acidic food or receding gums cause a brief zing that fades within seconds.
7. Wisdom tooth problems. A partly erupted or tilted wisdom tooth can cause swelling and pain around it. In such cases wisdom tooth extraction may be advised.
8. Loose or old fillings and crowns. Decay can restart under a filling, and a broken edge traps food.
9. Causes outside the tooth. Sinus infection (upper back teeth) and jaw joint (TMJ) problems can feel like toothache. Rarely, heart-related pain spreads to the jaw. If tooth or jaw pain comes with chest pressure, shortness of breath or pain in the left arm, treat it as an emergency, not a dental problem.
What is your pain telling you?
| Type of pain | Possible cause | What to do |
|---|---|---|
| Brief zing to cold, hot or sweet that fades in seconds | Sensitivity, early cavity | Get checked within 1–2 weeks |
| Pain that lingers after hot or cold | Inflamed nerve | Book an appointment soon |
| Sharp pain on biting | Crack, broken filling, swelling at the root | Get checked soon; avoid chewing on that side |
| Constant throbbing, worse at night | Deep decay, nerve infection | See a dentist within 24–48 hours |
| Swelling, pus or fever | Abscess | Get seen the same day |
| Bleeding, swollen or smelly gums | Gum disease | Cleaning and gum treatment |
| Pain at the back of the jaw, limited mouth opening | Wisdom tooth | X-ray and examination |
Before you reach the dentist: safe home remedies
These give temporary relief only. They do not remove a cavity or cure an infection.
- Warm salt-water rinse. Mix half a teaspoon of salt in a glass of warm water and rinse for 30 seconds. It helps clean the area and ease swelling.
- Cold compress. Hold a cloth-wrapped ice pack against the cheek for 10–15 minutes. Do not put ice directly on the tooth or gum.
- Floss gently or rinse to remove food trapped between teeth.
- Sleep with your head raised. This can reduce the throbbing that builds up at night.
- Avoid chewing on the painful side and skip very hot, cold or sugary food.
- Clove oil. A tiny amount on a cotton bud, touched to the tooth, can numb the area briefly. Do not apply a lot directly to the gum, because it can burn the tissue. Do not use it on children without advice.
- Pain medicine. If you want to take a painkiller, check with a doctor or pharmacist first, since the right choice depends on your age, health conditions, pregnancy and other medicines. Never place a tablet on the tooth or gum; it can burn the gum.
What not to do
- Do not start antibiotics on your own. The pain may ease but the cause stays, and incomplete or wrong antibiotics add to resistance.
- Do not apply heat to a swollen cheek. It can help an infection spread.
- Do not dig at the tooth with a pin, toothpick or needle.
- Do not treat relief as a cure. Sometimes pain stops because the nerve has died, while the infection continues.
When not to wait
See a dentist the same day if:
- Swelling of the cheek, jaw or gum is increasing
- You have a fever, or you can see pus near the tooth
- You cannot open your mouth fully
- Pain is keeping you awake at night
- A tooth is broken, loose or knocked out
Go to a hospital emergency department if:
- Swelling of the face or neck comes with difficulty breathing or swallowing
- Swelling spreads around the eye and you have a high fever
In these cases a dental infection may be spreading to deeper parts of the face and neck.
How a dentist finds the cause
Good treatment starts with an accurate diagnosis. A typical visit includes:
- Your history: when the pain started, what it feels like, and what makes it better or worse.
- Examination: teeth, gums, old fillings, bite and neighbouring teeth.
- Digital X-ray (IOPA): shows hidden cavities, infection at the root and bone condition, using much less radiation than traditional film X-rays.
- Percussion and vitality tests: gently tapping the tooth and testing its reaction to cold or heat, to confirm which tooth is the source. Pain is sometimes felt in one place while the problem is in another tooth.
- 3D imaging (CBCT), if needed: for complex cases such as wisdom teeth, implant planning or unusual root anatomy.
Treatment: what is done for which problem
| Problem | Usual treatment |
|---|---|
| Early cavity | Tooth-coloured filling |
| Deep decay or nerve infection | Root canal treatment (RCT), followed by a crown |
| Weak or heavily broken tooth | Crown or bridge |
| Gum disease | Scaling, deep cleaning, laser treatment where suitable |
| Impacted or tilted wisdom tooth | Surgical extraction |
| Sensitivity | Desensitising treatment, correct brushing technique |
| Night-time grinding | Night guard, bite assessment |
| Tooth cannot be saved | Extraction, then a dental implant or bridge to replace it |
Do not be afraid of a root canal
The biggest fear is that a root canal will hurt. In fact, RCT removes the pain rather than causing it. Under local anaesthesia, the infected pulp is removed, the canals are cleaned and sealed, and in many cases the treatment can be completed in 1–2 visits. A crown is often placed afterwards to protect the tooth from fracturing. Saving your natural tooth is generally better than extracting it.
How to prevent toothache
- Brush twice a day for 2 minutes with fluoride toothpaste and a soft brush.
- Floss daily. A toothbrush cannot reach all tooth surfaces.
- Cut down on frequent snacking on sweet and sticky food. How often you eat sugar matters more than how much.
- Visit every 6 months for a check-up and cleaning. Cavities are far cheaper and easier to treat before they hurt.
- Do not open bottles, cut thread or crack ice with your teeth.
- If you grind your teeth, ask about a night guard.
- Avoid tobacco and gutkha. They harm both gums and the rest of the mouth.
Toothache in children and older adults
Children: Decay in milk teeth spreads quickly. Children often do not say it hurts; they get irritable, refuse food or chew on one side. Ask a paediatric dentist before giving any medicine or home remedy, because safe doses depend on age and weight.
Older adults and people with diabetes: Infections spread faster and heal more slowly, and gum disease and blood sugar affect each other. Do not brush off tooth pain in these groups.
Frequently asked questions
What should I do first when I have a toothache? Rinse with warm salt water, remove trapped food, apply a cold compress to the outside of the cheek, and book a dentist visit as soon as possible.
What is the fastest way to stop a toothache? Home measures can give quick relief, but lasting relief depends on the cause: a filling for a cavity, root canal for an infected nerve, drainage and medicine for an abscess, and a crown or extraction for a broken tooth.
Can a toothache go away on its own? Sensitivity or mild gum irritation sometimes settles in a few days. A cavity or infection does not heal on its own. If the pain suddenly stops, the nerve may have died and the infection may still be there.
Why is toothache worse at night? Lying down increases blood flow to the head, and with fewer distractions you notice the pain more. Pain that gets worse every night suggests a nerve infection.
Does every toothache need a root canal? No. An early cavity needs only a filling. RCT is needed when decay or infection has reached the nerve.
Is a root canal painful? With modern technique and local anaesthesia it is usually as comfortable as a regular filling. Mild tenderness for a day or two afterwards is common.
Can I take painkillers or antibiotics on my own? Please do not. Painkillers only mask the pain, and antibiotics are not needed for every toothache. Ask a doctor or dentist based on your age and health.
My gum has a swelling but it does not hurt. Is it serious? Yes, it can be. A painless bump on the gum can be a sign of old root infection draining pus. Get it examined even without pain.
How often should I see a dentist? If the pain lasts more than 1–2 days or comes with swelling, fever or pus, do not wait. For healthy teeth, a check-up every 6 months is enough.
Toothache treatment at Imperial Smiles, Sector 82 Gurgaon
At Imperial Smiles Dental & Implant Clinic in Vatika India Next, Sector 82, we first find the real cause of your pain with a digital X-ray and, when needed, 3D imaging, and then plan treatment accordingly. Fillings, root canal, crowns, gum treatment, wisdom tooth extraction and dental implants are all available under one roof.
Do not wait for the pain to get worse. Book your check-up today.
- Phone / WhatsApp: 9810172415
- Timings: Every day except Thursday, 10:00 AM–2:00 PM and 4:00 PM–8:00 PM
- Address: 05, Ground Floor, Block H1, Primrose Avenue, Vatika India Next, Sector 82, Gurgaon, Haryana 122004
- Email: imperialsmilesdental@gmail.com
If you do not have dental insurance, the clinic’s in-house annual membership plan includes consultations, radiographs and a discount on treatments.
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