Dra. Cléo Salustiano In this article
SummaryWhat causes toothache, and when is it an emergency?What should you do until you can see a dentist?FAQRead nextToothache: When Is It a Dental Emergency?
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A toothache always deserves an assessment. Common causes include advanced cavities, sensitivity, inflammation or infection of the pulp, gum problems, cracked teeth and wisdom teeth. Some signs indicate an emergency: severe pain that does not ease, facial swelling, fever, pus (abscess), trauma and persistent bleeding. Until you see a dentist, keep the area clean and use a cold compress and your usual painkiller with care. These measures bring relief but do not replace treatment. This content is educational. In Mooca, Dr. Cléo Salustiano (CRO-SP 170844) sees patients every day, from 8 a.m. to 10 p.m., in Portuguese, English and Spanish.
A toothache is a sign that something needs attention, and in some cases, prompt attention. Not every toothache is an emergency, but several situations (severe pain, facial swelling, trauma, bleeding that will not stop) count as a dental emergency and call for an assessment without delay. Knowing how to recognize these signs and what to do until you see a dentist helps you act calmly.
In clinical practice, it is common for people to try to "tough out" a toothache with painkillers for days, hoping it will go away. Relief may come, but the cause is still there, and it may be getting worse. Pain is the warning; ignoring it often turns a simple problem into a bigger one.
In this article, Dr. Cléo Salustiano (CRO-SP 170844) explains the common causes of toothache, when it is an emergency and what to do until you can be seen. Important: this content is educational and does not replace a professional assessment. If you have pain or swelling, see a dentist.
This article comes from Dr. Cléo Salustiano's dental office in Mooca, São Paulo (care in English, Portuguese and Spanish). See the general dentistry page to learn how the treatment is done here and book your assessment.
What causes toothache, and when is it an emergency?
A toothache can have several causes. The most common is a cavity that has progressed and reached the deeper, more sensitive parts of the tooth. When decay gets close to or into the pulp (where the nerve and blood vessels are), the pain is usually intense and needs treatment.
Other causes include sensitivity (to cold, heat or sweets), inflammation or infection of the pulp (which may lead to root canal treatment), gum problems, cracked teeth, failing fillings and pressure from an erupting wisdom tooth.
Some signs point to an emergency and call for a prompt assessment: severe pain that does not ease with an ordinary painkiller, swelling in the face or gums, fever, pain with pus (a sign of an abscess or infection), trauma that breaks or dislodges a tooth, and bleeding that will not stop.
Facial swelling deserves special attention: it can indicate an infection that needs care without delay. It is not something to "wait out." If you have swelling, especially with pain and fever, seek care as soon as possible.
Trauma (a fall or a blow) that breaks, dislodges or knocks out a tooth is also an emergency. If a permanent tooth has come out whole, time matters for the chances of putting it back, so getting care right away makes a difference.
In short, a toothache always deserves an assessment, and some signs (severe pain, swelling, fever, pus, trauma, persistent bleeding) indicate an emergency. Recognizing these signs lets you act at the right time, before the problem gets worse.
| Sign | Level of concern |
|---|---|
| Severe pain that does not ease with an ordinary painkiller | Emergency — get a prompt assessment |
| Swelling in the face or gums | Emergency — may indicate a spreading infection |
| Fever along with the pain | Emergency |
| Pain with pus (a sign of an abscess) | Emergency |
| Trauma that breaks or dislodges a tooth | Emergency |
| Bleeding that will not stop | Emergency |
| Quick sensitivity to cold, heat or sweets | Deserves an assessment, but not an emergency |
| Until you see a dentist | Keep the area clean, use a cold compress on the outside and avoid heat if there is swelling |
| What not to do | Self-medicate with antibiotics or put a painkiller directly on the tooth |
What should you do until you can see a dentist?
The first step is to seek care: a toothache has a cause, and only an assessment can identify and treat it. In the meantime, a few measures can bring relief, but they do not replace treatment. The goal is to stay comfortable until you are seen.
Keep the area clean: brush gently, and if food is stuck (between teeth or near a wisdom tooth), dental floss can help remove it carefully. Careful hygiene sometimes relieves pain caused by local buildup.
Cold compresses on the outside of the face can temporarily ease pain and swelling. Avoid applying heat if there is swelling or a suspected infection. These are short-term relief measures, not solutions; the cause still needs treatment.
About painkillers: only use one you already take safely, following the package directions, without overdoing it, and do not take antibiotics on your own. If you are unsure about medication, ask a health professional. Medication eases the pain but does not treat the cause.
Avoid things that tend to make it worse: very hot, cold or sweet foods on the painful tooth, chewing on that side and poking at the area. Do not put painkillers or other substances directly on the gum or tooth, as this can irritate the tissue.
Seek care without delay if you have facial swelling, fever, severe pain that does not ease, pus, trauma or persistent bleeding. These signs indicate an emergency. This content is educational: if you have pain or swelling, a professional assessment is the safe path.
For the full picture, I have gathered everything on the general dentistry in Mooca page.
When is a toothache an emergency?
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When there is severe pain that does not ease with an ordinary painkiller, swelling in the face or gums, fever, pus (a sign of an abscess), trauma that breaks or dislodges a tooth, or bleeding that will not stop. These signs call for an assessment without delay.
What causes toothache?
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There are several causes: advanced cavities (the most common), sensitivity, inflammation or infection of the pulp (which may lead to a root canal), gum problems, cracked teeth, failing fillings and pressure from a wisdom tooth. An assessment identifies the cause in your case.
What should I do until I can see a dentist?
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Seek care, and in the meantime keep the area clean, use a cold compress on the outside of your face and, if needed, a painkiller you already take safely, following the package directions. These are short-term relief measures and do not replace treating the cause.
Is facial swelling with a toothache serious?
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It deserves attention and prompt care. Swelling can indicate an infection that needs quick treatment, especially if it comes with pain and fever. It is not something to "wait out"; get an assessment as soon as possible.
Can I take antibiotics on my own for a toothache?
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Do not self-medicate with antibiotics. They should only be used under professional guidance, when indicated. Taking them on your own can mask the problem and carries risks. If you have pain with swelling or fever, get an assessment for the right treatment.
Can a toothache go away on its own?
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The pain may ease, but the cause usually remains and may be getting worse. When the pain "disappears," it is sometimes because the nerve has been affected, not because it healed. That is why a toothache always deserves an assessment, even if it has eased.
Is dental trauma an emergency?
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Yes. A fall or blow that breaks, dislodges or knocks out a tooth is an emergency. If a permanent tooth has come out whole, time matters for the chances of putting it back, so getting care right away makes a difference. Keep the tooth and see a dentist.
Hot or cold compress for a toothache?
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A cold compress on the outside of the face usually helps ease pain and swelling temporarily. Avoid heat if there is swelling or a suspected infection. These are short-term relief measures and do not replace an assessment and treatment of the cause.
Is tooth sensitivity the same as a toothache?
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Sensitivity (a quick twinge from cold, heat or sweets that fades quickly) is different from constant, intense pain. Both deserve an assessment, but persistent or intense pain is more concerning. Your dentist will identify the cause and what each case needs.
Does a toothache with pus need prompt care?
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Yes. Pus indicates an infection (abscess) and calls for an assessment without delay. Do not squeeze it or try to drain it yourself, and do not self-medicate with antibiotics. See a dentist, because the infection needs specific treatment so it does not get worse.
Can I put a painkiller directly on the aching tooth?
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No. Putting painkillers or other substances directly on the gum or tooth can irritate and burn the tissue, making things worse. If you use a painkiller, take it by mouth following the package directions, and get an assessment to treat the cause of the pain.
Can a wisdom tooth cause toothache?
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Yes. An erupting or poorly positioned wisdom tooth often causes pain, pressure and sometimes inflammation of the surrounding gum. An assessment checks the position of the wisdom tooth and determines the right approach for your case. If you have pain, see a dentist.
Where can I get care for a toothache in Mooca?
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Dr. Cléo Salustiano (CRO-SP 170844) sees patients at Rua Hipódromo, 1141, in Mooca, São Paulo, Monday to Sunday, 8 a.m. to 10 p.m., in Portuguese, English and Spanish. The extended hours help if you need an assessment for a toothache. If you have pain or swelling, seek care.
