Tooth Pain When Flying or at Altitude in Canada
Ever felt a sudden, sharp toothache as the plane climbs, or a deep throb on a ski trip in the Rockies? You’re not imagining it. Changes in air pressure can irritate sensitive teeth—especially if there’s a hidden problem. Here’s a clear Canadian guide to why it happens, how to prevent it, and what to do if it strikes mid‑trip.
What causes tooth pain when flying or at altitude?
Air pressure drops in airplane cabins (typically equal to 6,000–8,000 feet) and at mountain elevations. Trapped air or inflamed tissues inside a tooth, filling, or sinus can expand or shift with pressure changes, triggering pain called barodontalgia—often revealing an underlying dental issue.
Barodontalgia 101: Why pressure changes hurt teeth
Barodontalgia is tooth pain caused or worsened by pressure changes. In most cases, it isn’t the pressure itself that’s the problem—it’s a pre‑existing condition made noticeable by altitude. Common culprits include:
1) Untreated decay or a leaking filling
A cavity or a tiny gap along the edge of an old filling can trap air and fluids. When cabin pressure changes, that trapped air can expand or contract, tugging on nerves and causing a sharp, zinging pain.
2) Cracked or heavily restored teeth
A crack (even a hairline) or a tooth with a very large filling or crown may flex under pressure changes. That movement can irritate the inner nerve (pulp) and the ligament that holds the tooth in its socket.
3) Recent dental work
Teeth that were just filled, crowned, or had a root canal can be temporarily sensitive as they heal. Flying immediately after a big procedure may make a tender tooth feel worse, particularly within the first few days.
4) Sinus issues and altitude
Your upper back teeth sit close to the sinus. With a head cold, allergies, or a sinus infection, changing pressure can squeeze swollen sinus tissues and make teeth ache. If pain feels diffuse across several upper molars—or shifts when you lean forward—your sinuses may be involved. If you’re unsure, this quick primer can help you sort it out: sinus-related tooth pain.
5) High-altitude and mountain activities
Whether you’re hiking at 2,000 metres, snowboarding above tree line, or taking a gondola, rapid elevation changes can act like mini ‘pressure tests’ for vulnerable teeth. The same mechanics apply to scuba divers (tooth squeeze under increased pressure), though that’s the opposite direction of pressure change.
“Oral health is a key indicator of overall health, well-being and quality of life.” — World Health Organization
Who’s most at risk?
Canadians who travel or live at elevation are more likely to notice barodontalgia, but certain scenarios raise the odds:
- Deep cavities, older or cracked fillings, or a history of sensitive teeth
- Recent dental treatment (fillings, crowns, extractions, root canal), especially within 48–72 hours
- Ongoing sinus congestion, seasonal allergies, or a current upper respiratory infection
- Frequent flyers, flight crew, backcountry hikers, and skiers/boarders rapidly changing elevation
Pre-flight and pre-trip prevention that works
1) Book a quick dental check before your trip
If you’re due for care—or you’ve had on‑and‑off tooth twinges—get checked before you fly. Your dentist can spot leaky fillings, early cracks, or decay and take care of them on home turf. Not sure what a routine visit includes? Here’s what happens from start to finish so you can plan with confidence: book a routine checkup.
2) Time recent dental work wisely
After a large filling, crown, or extraction, try to give yourself a few days (ideally a week) before flying, if possible. Your provider can advise on the safest window based on your procedure and how you’re healing.
3) Tame sinus triggers
If allergies or a cold are flaring, talk to your pharmacist or doctor about safe decongestant or saline options and timing. Clearing your nose and equalizing during ascent/descent (swallow, yawn, sip water, chew gum) can reduce sinus‑related tooth pain.
4) Strengthen enamel, calm nerves
Use a fluoride toothpaste twice daily and a sensitivity toothpaste once daily for 2–3 weeks before your trip if you get zings with cold air or drinks. A pre‑trip professional cleaning can also help by removing plaque and exposed dentin irritants.
5) Pack a small “tooth travel kit”
Bring a soft toothbrush, travel‑size fluoride toothpaste, dental floss or interdental brushes, and over‑the‑counter pain relievers you’ve tolerated before (e.g., acetaminophen or an NSAID if safe for you). A compact saline spray can help if you get stuffy.
In the air (or on the mountain): how to manage pain fast
1) Sip water and equalize
Take slow sips, chew sugar‑free gum, or gently yawn to help pressure equalize on ascent and descent. Hydration also reduces mouth dryness—which can make sensitivity worse.
2) Avoid extreme temperatures
Skip very hot coffee or ice‑cold drinks during takeoff/landing. Aim for lukewarm or room‑temperature beverages until you level off.
3) Use safe OTC pain relief if needed
Acetaminophen or an NSAID (if appropriate for you) can reduce pain and inflammation. Always follow label directions and your doctor’s advice.
4) Don’t DIY a broken filling
If a filling loosens in flight, avoid chewing on that side. Temporary filling material from a pharmacy can help once you land, but see a dentist promptly to prevent a true emergency. Unsure whether to wait? Here’s a simple guide to decide when to visit an emergency dentist.
How your dentist finds (and fixes) the cause
Barodontalgia is a symptom—your dentist’s job is to uncover the ‘why.’ Expect a focused exam, bite and cold tests, and targeted X‑rays (and sometimes photos) to spot small cracks, deep decay, or a failing restoration. Clear imaging helps you and your dentist choose the best fix—whether that’s a new filling, an onlay/crown for a cracked tooth, or completing a root canal on a badly inflamed tooth. Curious about what X‑rays show? Check out our patient‑friendly explainer on results and next steps to make sense of your images.
Tip: If your pain feels higher in your cheek and across multiple upper molars, your dentist may also evaluate for sinus involvement and suggest medical follow‑up if needed.
Barodontalgia vs sinus pain: quick ways to tell
- Tooth‑specific, sharp zings that worsen with biting or cold are more often dental (crack, deep filling, decay).
- Diffuse pressure across several upper teeth, worse with bending forward or a blocked nose, points toward sinus.
- Recent dental work? Tenderness may be expected for a few days; call your dentist if it’s severe or getting worse.
If you’re still not sure, this guide will help differentiate signs and direct your next step: Sinus infection or toothache?
Planning altitude adventures: skiers, hikers, climbers
Rapid elevation changes can trigger symptoms even on short gondola rides. Before you head out:
- Fix lingering tooth twinges before the trip.
- Pack your “tooth travel kit.”
- Warm up cold sports drinks to near room temperature if they trigger zings.
- Use a mouthguard if you clench your teeth during intense runs—it can reduce mechanical stress on cracked or heavily restored teeth.
After you land: when to call your dentist in Canada
Call promptly if you have any of the following:
- Pain that lasts beyond 24–48 hours after landing
- Pain that spikes with biting, cold, or sweet foods (often a crack or deep decay)
- Swelling of the face or gums, fever, or a pimple‑like bump on the gums (possible infection)
- A broken, lost, or very sensitive filling or crown
For urgent situations—severe pain, swelling, fever, or trauma—don’t wait. Learn the red flags and next steps here: When to Visit an Emergency Dentist.
Frequently asked questions about altitude-related tooth pain
Does flying itself damage my teeth?
No. Flying doesn’t harm healthy teeth. It can, however, reveal hidden issues like leaky fillings, deep decay, or cracks—turning mild sensitivity into a sharper pain during pressure changes.
Can I fly after a filling, crown, or root canal?
Often yes, but you may feel more sensitivity for a few days. If it’s a big procedure, ask your dentist about timing. When possible, give yourself several days before flying so tender tissues can calm.
What pain relievers are best mid‑flight?
Many Canadians use acetaminophen or an NSAID if safe for them. Always follow label directions and your physician’s guidance—especially if you take other medications or have medical conditions.
Could my pain be a sinus problem, not a tooth?
Yes. Sinus pressure can mimic upper molar toothaches. If pain is broad across several teeth or changes when you bend forward, the sinus may be involved. A dental exam can help you tell the difference and guide care with your family doctor if needed.
How do dentists diagnose the real cause?
With a targeted exam, bite tests, cold tests, and X‑rays. Imaging helps spot hidden decay, cracks, or failing fillings so your dentist can recommend the right fix. Understanding what X‑rays show can make choices easier at your visit.
Can I prevent barodontalgia completely?
You can reduce the chance significantly by treating small problems early, keeping up with cleanings, strengthening enamel (fluoride), and managing sinus congestion before you travel. A quick pre‑trip check can save a vacation.
Conclusion
Tooth pain at altitude—on a plane, gondola, or mountain pass—is usually a sign of something your tooth wanted you to know sooner: a crack, leaky filling, deep decay, or sinus pressure. The fix is simple—catch and treat issues early, and have a plan before you travel. A fast pre‑trip visit, strong day‑to‑day hygiene, and smart in‑flight habits can keep your smile calm from takeoff to touchdown and all the way up the chairlift.
FAQ
Why do my teeth hurt during takeoff and landing?
Pressure drops can make trapped air or inflamed tissues inside a tooth, filling, or sinus expand or shift, causing pain (barodontalgia). Healthy teeth usually don’t react.
Is barodontalgia dangerous?
It’s uncomfortable but not inherently dangerous. It’s a helpful clue to see your dentist, because it often points to decay, a crack, or a failing filling that needs attention.
Can I still travel if I have a mild toothache?
If you can, see your dentist first. If travel can’t wait, pack a soft diet, avoid very hot/cold drinks during ascent/descent, stay hydrated, and consider OTC pain relief if safe for you—then book an exam when you land.
Will a night guard help with altitude pain?
It won’t stop pressure‑related symptoms, but if you clench when stressed or cold, a custom night guard can reduce bite forces on cracked or heavily restored teeth, lowering the chance of a flare.
What if my filling falls out mid‑trip?
Avoid chewing on that side. A temporary filling kit from a pharmacy may help until you can see a dentist. If you also notice swelling, fever, or intense pain, prioritize urgent care.
How often should I get checked if I fly often?
Most people do well with regular six‑month checkups, but frequent flyers or those with a history of dental issues may benefit from personalized intervals. Your dentist can tailor a schedule that fits your travel and risk level.
