A toothache that comes and goes usually means a tooth is irritated but the nerve hasn’t fully given up yet. Common causes are a cavity, a cracked tooth, a worn filling, gum inflammation, sinus pressure, or grinding. On-and-off pain is common and often fixable with a simple treatment if caught early. It becomes more serious if the pain starts lasting longer, wakes you at night, or comes with swelling. A Kitsilano dentist can usually find the cause in one visit with a few quick tests and an X-ray.
Intermittent pain is sneaky. It hurts for a day, then you forget about it for a week. Then it comes back when you sip iced coffee or chew on that side. Every quiet spell makes it easier to put off booking. When the cause is inside the tooth, treatment can range from a filling to root canal treatment, depending on how far the irritation has gone.
Not all tooth pain starts in the tooth. Inflamed gums can make teeth ache, and periodontal treatment settles that kind of pain at its source. In other cases a tooth is cracked too deeply to save, and tooth extractions become the most comfortable long-term option.
The best fix is catching it before it gets that far. Regular hygiene visits pick up early cavities, cracks, and gum changes while they’re still small.
What on-and-off pain often points to
- Brief zing with cold or sweet: cavity, worn enamel, or exposed root
- Sharp pain when you release a bite: cracked tooth
- Dull ache in several upper teeth: sinus pressure
- Morning jaw and tooth ache: grinding or clenching
- Throbbing that lingers or wakes you: inflamed or infected nerve, needs prompt care
Why would a toothache come and go?
Teeth have a nerve and blood supply inside, called the pulp. When the pulp is irritated, it reacts to triggers like cold, pressure, or sugar. Between triggers, it settles. That’s why the pain cycles.
Dentists sort pulp irritation into 2 broad types:
- Reversible pulpitis: sharp pain that fades within seconds of the trigger going away. The nerve can recover once the cause is fixed, often with a filling.
- Irreversible pulpitis: pain that lingers for minutes, throbs, or starts on its own. The nerve is unlikely to recover, and a root canal or extraction is usually needed.
The shift from one to the other can happen quietly. That’s the main reason not to wait.
The most common causes of a toothache that comes and goes
Cavities
Early decay causes short, sharp sensitivity to sweets and cold. As it deepens toward the nerve, pain lasts longer.
Cracked tooth syndrome
A crack flexes when you bite, letting fluid move inside the tooth. The classic sign is pain when you let go of a bite, often on one specific cusp. Cracks rarely show on X-rays, so dentists use bite tests and special lights.
Worn or leaking fillings
Old fillings can shrink or chip at the edges, letting bacteria seep underneath. Sensitivity comes and goes until the filling is replaced.
Gum recession and exposed roots
Roots don’t have enamel. When gums pull back, cold air and drinks hit the root surface directly, causing quick zings.
Gum infection
A periodontal abscess or deep pocket can cause a dull, pressure-like ache that flares and settles.
Sinus pressure
Upper molar roots sit right below the sinuses. A cold or allergies can make several upper teeth ache together, often worse when you bend over.
Grinding and clenching
Nighttime grinding bruises the ligaments around teeth. You wake up with sore teeth or jaw that improves through the day.
A recent dental procedure
Sensitivity after a new filling or crown is common for a few days to 2 weeks. Pain that gets worse instead of better needs a check.
How to tell if it’s minor or serious
| Sign | More likely minor | More likely serious |
|---|---|---|
| How long pain lasts after a trigger | A few seconds | Minutes or longer |
| Starts on its own | No | Yes |
| Wakes you at night | No | Yes |
| Swelling or bad taste | No | Yes |
| Pain when biting | Mild or none | Sharp, on one tooth |
| Pain relievers | Work easily | Barely help |
Seek urgent care if
You have facial or gum swelling, fever, a bad taste or pus, pain that keeps you up, or trouble swallowing or opening your mouth. These can mean infection. If breathing or swallowing is affected, go to the nearest hospital emergency department right away. An emergency dentist in Vancouver should see dental infections promptly.
What happens at the appointment?
- History. When it hurts, how long, and what triggers it.
- Visual exam. Looking for decay, cracks, worn fillings, and gum changes.
- X-rays. Checking between teeth and around the roots.
- Cold test. Shows how the nerve responds and recovers.
- Bite test. Biting on a small tool cusp by cusp to find cracks.
- Percussion test. Gentle tapping to check for inflammation at the root.
- Diagnosis and options, explained in plain language.
How is on-and-off tooth pain treated?
| Cause | Usual treatment |
|---|---|
| Small cavity | Tooth-coloured filling |
| Leaking or cracked filling | Replace the filling, sometimes with an onlay |
| Cracked tooth above the gumline | Crown to hold it together |
| Inflamed nerve that won’t recover | Root canal treatment and crown |
| Crack extending into the root | Extraction, then an implant, bridge, or denture |
| Exposed roots | Desensitizing treatment, bonding, or gum grafting |
| Gum infection | Deep cleaning or periodontal treatment |
| Grinding | Custom night guard |
| Sinus pressure | Medical treatment for the sinus; teeth usually settle |
What can you do at home in the meantime?
These steps can ease discomfort for a few days. They don’t replace a diagnosis.
- Use a toothpaste for sensitive teeth and dab a little on the sore area.
- Avoid very hot, cold, or sugary foods and drinks on that side.
- Chew on the other side.
- Take over-the-counter pain relief as directed on the label, if it’s safe for you.
- Rinse with warm salt water after meals.
- Don’t put aspirin directly on the gum. It burns the tissue.
Myths about intermittent tooth pain
“If it stopped hurting, it healed.”
Pain can stop because the nerve has died. Infection can keep spreading quietly at the root tip.
“Tooth pain always means a root canal.”
Many on-and-off toothaches are fixed with a filling, a bite adjustment, or a night guard.
“Dental pain means you’ll be in pain at the dentist.”
Modern local anaesthetic makes treatment comfortable, even for inflamed teeth. Anxiety is common, and a good team will go at your pace.
“Antibiotics fix toothaches.”
Antibiotics may help a spreading infection, but they don’t fix decay or cracks and aren’t useful for most toothaches.
Real patient scenarios
- The iced latte zing. A Kitsilano runner felt a 2-second zing with cold drinks for weeks. A small cavity between 2 molars was found on X-ray. One filling, done.
- The bite-release pain. A patient felt sharp pain only when letting go of a bite on crusty bread. A bite test found a crack. A crown stopped the pain completely.
- The ache that stopped. A man’s tooth throbbed for 3 nights, then went silent. A month later his cheek swelled. The nerve had died and become infected. A root canal saved the tooth.
Common mistakes people make
- Waiting until pain becomes constant before booking.
- Only chewing on one side for months, overloading other teeth.
- Ignoring grinding signs like flattened teeth or morning jaw pain.
- Self-diagnosing as sinus pain without having teeth checked.
How to prevent toothaches
- Brush twice a day with fluoride toothpaste and floss daily.
- Keep 6-month checkups and hygiene visits.
- Wear a night guard if you grind.
- Limit sugary snacks and acidic drinks between meals.
- Get chipped or cracked teeth checked early.
What should you track before your appointment?
Dentists love a good pain diary. A few notes over 3 or 4 days can cut the time to diagnosis in half.
| What to note | Why it helps |
|---|---|
| Which tooth or side | Narrows the search |
| Trigger: cold, hot, sweet, biting, lying down | Points to the cause |
| How long it lasts | Separates reversible from irreversible nerve pain |
| Time of day | Morning pain suggests grinding; night pain suggests nerve inflammation |
| Recent dental work or injuries | Explains new sensitivity |
| Cold or allergy symptoms | Flags possible sinus involvement |
Signs you need a dental visit soon
- Pain that has lasted more than a week, even if it comes and goes
- Sensitivity that’s getting stronger or lasting longer
- A visible hole, dark spot, or chip
- Gums that bleed, swell, or pull back around one tooth
- A filling or crown that feels loose or rough
None of these are emergencies on day 1. All of them are worth booking within a few days, which keeps treatment simple and quick.
Choosing the right clinic for tooth pain
When tooth pain is the reason you’re booking, look for a clinic that can take X-rays the same day, explain your options without pressure, and treat most causes in-house. Being able to have a filling, root canal, or extraction at the same practice saves extra referrals and waiting. Evening hours help too, since pain rarely waits for a convenient time.
Can stress cause a toothache?
Indirectly, yes. Stress often shows up as clenching during the day or grinding at night, which can make healthy teeth ache, especially in the morning. Stress can also lower your guard on habits like snacking or skipping flossing. If your toothache flares during busy weeks and settles on holidays, mention that pattern. A night guard and a check for cracks are usually the first steps, and the pain often eases within a couple of weeks.
The earlier you book, the more likely the fix is a small one.
Getting tooth pain checked in Kitsilano
If you need a dentist in Kitsilano who can find the cause quickly, Enhance Dental Centre is one of the best-reviewed options in Vancouver, with a 5.0 Google rating from more than 270 patients. The clinic is at 2219 West Broadway, Vancouver, BC V6K 2E4, and accepts new patients and CDCP patients, making it a convenient CDCP dentist in Vancouver for eligible families.
Services cover preventive hygiene, fillings, endodontics, periodontal treatment, oral surgery, extractions, implants, dentures, fixed bridges, Invisalign, whitening, veneers, composite bonding, and oral cancer screening. Hours are Monday to Tuesday 8:00 AM to 5:00 PM, Wednesday to Thursday 10:00 AM to 7:00 PM with evening appointments, and Friday 8:00 AM to 4:00 PM.
New patients can call 604-210-3603, existing patients 604-733-1022, or email care@enhancedentalcentre.com. Care is provided by licensed dentists registered with the College of Dental Surgeons of British Columbia (CDSBC), now part of the BC College of Oral Health Professionals. This article is general information and doesn’t replace a dental examination.
Frequently asked questions
Should I see a dentist if my toothache went away?
Yes. Pain that stops on its own can mean the nerve has died, and infection may still be present. A quick exam and X-ray can confirm whether treatment is needed.
Can a sinus infection cause tooth pain that comes and goes?
Yes. Sinus pressure can make several upper back teeth ache, often worse when bending over. If the pain stays after the sinus clears, have the teeth checked.
Why does my tooth only hurt when I drink cold water?
Brief cold sensitivity often comes from worn enamel, an exposed root, or an early cavity. If the pain lingers for more than 30 seconds, the nerve may be inflamed.
Can grinding cause a toothache?
Yes. Grinding and clenching strain the ligaments around teeth and can crack teeth over time. Morning soreness is a common clue, and a night guard often helps.
Is a toothache that comes and goes an emergency?
Not usually, but it shouldn’t wait for months. It becomes urgent if you have swelling, fever, pus, or pain that keeps you awake.
Conclusion
A toothache that comes and goes means a tooth is irritated, often from a cavity, crack, worn filling, gums, sinus, or grinding.
Pain that lingers, wakes you, or comes with swelling needs prompt care.
Enhance Dental Centre can pinpoint the cause and fix it before it becomes a bigger problem.