Dental emergency · Valleyfield
Severe toothache at night in Valleyfield: what to do before the clinic opens?
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01In brief
Severe toothache at night: what should I do?
Get it seen as soon as we open
A severe toothache that gets worse at night often comes from an inflamed or infected tooth nerve: when you lie down, pressure builds inside the tooth. In the meantime, keep your head raised, put something cold on your cheek and ask your pharmacist or Info-Santé 811 for advice on a pain reliever. Book online 24/7, or call the Go Dentiste clinic in Valleyfield at 514-533-3368 from 8 a.m. Monday to Thursday (9 a.m. Friday to Sunday) to be seen that day, subject to availability.
- ClinicGo Dentiste Valleyfield
785 Monseigneur-Langlois Boulevard, Salaberry-de-Valleyfield - Phone514-533-3368
- HoursOpen 7 days a week: Mon 8 a.m.–5 p.m., Tue 8 a.m.–7 p.m., Wed–Thu 8 a.m.–5 p.m., Fri–Sun 9 a.m.–2 p.m.
- OnlineBooking 24/7
- Time to treatmentSame day, subject to availability
- New patientsWelcome, no referral needed
02What to do now
How to get through the night and be seen as early as possible
- Raise your headSleep with one or two extra pillows: the pressure in the tooth often goes down.
- Cold on your cheekA wrapped cold compress, 15 minutes at a time. Avoid very hot or ice-cold drinks if they trigger the pain.
- Pain reliever: ask for adviceA pharmacist or Info-Santé 811 can advise you based on your health and your medications. Follow the recommended dose.
- Book your spotOnline booking works 24/7. Also call as soon as we open: the day’s emergency slots are given out in the order calls come in.
What to avoid
- Putting aspirin or a pill directly on the gum (it can burn)
- Taking more than the recommended dose of a pain reliever, or combining pain relievers without advice
- Putting heat on your cheek
- Taking an old antibiotic you found at home
Warning signs: Call 911 or go to the hospital emergency room (Hôpital du Suroît, in Valleyfield) if swelling spreads to the eye, under the jaw or to the neck, if you have trouble breathing, swallowing or opening your mouth, or if you have a high fever.
New patients · First visit
Your complete checkup, in a single visit.
A 45- to 75-minute visit
- Complete exam service and low-dose X-rays
- Cleaning service, the same day when possible
- Written treatment plan, every cost explained
- Coming as a family? Grouped appointments on request: a single trip
Vaudreuil-Dorion just opened: openings for new patients
03Is it urgent?
Hospital, clinic or appointment: how to decide
- Hospital or 911Swelling spreading to the eye or neck, trouble breathing, swallowing or opening your mouth, high fever: hospital emergency room or 911.
- Clinic, todayIntense, throbbing pain that wakes you up or does not ease with pain relievers: call as soon as we open to be seen that day, subject to availability.
- In the next few daysBrief sensitivity to cold or sweets that goes away in a few seconds: book an appointment in the next few days.
04At the Valleyfield clinic
How the dentist finds the tooth and eases the pain
When you arrive, the dentist looks for the tooth causing the pain: exam, cold and tapping tests, digital X-ray. Night-time pain often comes from the pulp, which is the nerve of the tooth.
Depending on the case, relief comes from removing the inflamed part and starting a root canal, a soothing temporary dressing, a filling if the cause is a cavity, or an extraction if the tooth cannot be kept. The plan and costs are explained before starting.
Directions to the Valleyfield clinic
Opening hours
Valleyfield
| MondayMon | 8 a.m. – 5 p.m. |
|---|---|
| TuesdayTue | 8 a.m. – 7 p.m. |
| WednesdayWed | 8 a.m. – 5 p.m. |
| ThursdayThu | 8 a.m. – 5 p.m. |
| FridayFri | 9 a.m. – 2 p.m. |
| SaturdaySat | 9 a.m. – 2 p.m. |
| SundaySun | 9 a.m. – 2 p.m. |
05Possible treatments
Services that may be offered to you in Valleyfield
The treatment depends on the exam: the dentist explains the options and their costs before starting.
06FAQ
Frequently asked questions: severe toothache at night in Valleyfield
Why does my tooth hurt more at night?
When you lie down, more blood flows to your head and pressure rises in a tooth with an inflamed nerve. There are also fewer distractions. Pain that wakes you up should be checked quickly.
The pain was gone by morning: should I still come in?
Yes. Intense pain that suddenly disappears can mean the tooth’s nerve is dying; the infection can then spread without pain. Book an appointment for an exam.
Can I book in the middle of the night?
Yes. Online booking is available 24/7. When the clinic is closed, the website also lets you leave your number so we can call you back when we open.
Who can I talk to at night if I need advice?
Info-Santé 811 answers 24/7 in Quebec, and a pharmacist can advise you on pain relievers. If you have major swelling, fever or trouble breathing, go to the hospital emergency room.
07See also
Other dental emergencies in Valleyfield
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A dental emergency in Valleyfield? Call or book.
Same-day emergencies (subject to availability), 7 days a week at the Valleyfield clinic. New patients welcome, online booking 24/7.
Content prepared by the Go Dentiste team (Dr Dominic Morel-Maynard, general dentist and owner). Last updated: October 11, 2026. General information for guidance only: only an in-clinic exam can establish a diagnosis and a treatment plan suited to your situation. For health advice 24/7, call Info-Santé 811; in a serious emergency, call 911. Services are offered in French and English.