Dra. Cléo Salustiano In this article
SummaryMost common causes of tooth root painWhen it is urgent and what to do until your visitFAQRead nextTooth Root Pain: What It Could Be and When to See a Dentist
Quick summary of this article+
Tooth root pain may come from roots exposed by gum recession, causing quick twinges with cold and brushing, or from problems such as root decay, pulp inflammation or infection, abscess, cracks, bruxism and even sinusitis. Spontaneous, throbbing or night-time pain, pain on biting, swelling or fever calls for prompt care and often root canal or gum treatment. Mild sensitivity can be eased with a soft brush and sensitive-teeth toothpaste but also deserves an assessment. In Mooca, Dr. Cléo Salustiano (CRO-SP 170844) sees patients every day, from 8 a.m. to 10 p.m.
Tooth root pain usually has one of two origins. The most common and least serious is an exposed root: when the gum recedes, the part of the root that used to be covered is exposed to cold, sweets and brushing, causing a quick jolt of sensitivity. The other is a problem inside or around the tooth, such as pulp inflammation or infection, an abscess, gum disease or a crack, which tends to cause stronger pain, on biting or without a trigger. Telling them apart requires a clinical exam and X-rays.
In clinical practice, people describe "root pain" in very different ways: a twinge at the neck of the tooth with cold water, a dull ache that worsens when chewing, or throbbing pain that seems to come from the bone. Each description points to different causes and urgency, so it is worth noticing how the pain behaves before your visit.
Dr. Cléo Salustiano (CRO-SP 170844), a dentist in Mooca, explains the most frequent causes, how each one usually shows up and which signs call for prompt care.
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.
Most common causes of tooth root pain
Exposed root and sensitivity: the root is not covered by enamel but by a thinner, more porous layer. When the gum recedes, from hard brushing, gum disease, the bite or age, this surface is exposed and reacts to cold, sweets and touch with short pain that fades soon after the trigger stops. The article receding gums explains causes and treatments.
Root decay: the exposed area is also more vulnerable to decay, especially in adults and older people, in those with dry mouth or difficulty cleaning. It may start as a yellowish or brownish spot at the neck of the tooth and progress without pain at first.
Pulp problems and infection: when deep decay, trauma or a crack inflames the pulp (the "nerve"), pain tends to be stronger and longer-lasting. If the pulp dies, infection may reach the root tip and cause pain on biting, a feeling that the tooth is "higher", swelling and sometimes a small bump on the gum. In these cases, root canal treatment is usually considered. See tooth abscess: what to do.
Other causes: periodontal abscess (infection of the gum around the root), a cracked or fractured root, overload from grinding or clenching, and even sinusitis, which can make the roots of the upper back teeth feel painful. That is why pain that seems to be "in the root" does not always come from the tooth itself.
| What the pain is like | Possible cause | Urgency |
|---|---|---|
| Quick twinge with cold or brushing, at the neck of the tooth | Root exposed by gum recession | Assess at a routine visit |
| Dark spot at the neck of the tooth, with or without pain | Root decay | Assess soon |
| Pain lasting minutes after cold or heat | Pulp inflammation | Assess within a few days |
| Pain on biting, tooth feels "high" | Infection at the root tip or a crack | Assess as soon as possible |
| Throbbing pain with swelling or fever | Abscess | Immediate care |
| Upper teeth ache with a blocked nose | May be sinusitis | Assess the tooth and, if needed, see a doctor |
When it is urgent and what to do until your visit
Seek care as soon as possible if you have spontaneous, throbbing pain, pain that wakes you at night, facial or gum swelling, fever, a persistent bad taste, strong pain on biting or a tooth that feels higher than the others. These signs suggest significant inflammation or infection, which should not be managed with medication alone. See when pain is an emergency in toothache: when is it an emergency.
If the pain is a quick twinge with cold or brushing that soon passes, the likely cause is sensitivity from an exposed root. Until your visit, it helps to use a soft brush without pressing too hard, fluoride or sensitive-teeth toothpaste and to avoid very cold drinks. Even so, it is worth an assessment, as the same area may have early decay or progressing recession.
Do not put medicines, alcohol, garlic or other products on the gum or tooth: they can burn the tissue and do not treat the cause. Pain relievers should only be used as advised by a health professional. Treating the source, whether gum, decay, pulp or bite, is what solves the problem.
This content is for information only and does not replace an exam. Consult a dentist whenever root pain persists or worsens. In Mooca, Dr. Cléo Salustiano sees patients every day, from 8 a.m. to 10 p.m., including Sundays and holidays, for dental emergencies, root canal treatment and gum treatment.
What causes pain in a tooth root?
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The most common causes are a root exposed by receding gums, root decay, pulp inflammation or infection, abscess, a crack and overload from grinding. Sinusitis can also cause pain in the upper back teeth. Only an exam with X-rays confirms the source.
Does tooth root pain always mean a root canal?
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No. When the pain is a quick twinge with cold, it is usually sensitivity from an exposed root, managed with brushing care, desensitizers or gum procedures. A root canal is usually considered when inflammation does not settle or the pulp is infected.
How can I ease root sensitivity?
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A soft brush without too much pressure, fluoride or sensitive-teeth toothpaste and avoiding very cold drinks usually help. The dentist may apply desensitizers, restore worn areas or treat gum recession, depending on the cause.
Is root pain with a swollen gum serious?
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It may indicate infection, such as a dental or periodontal abscess, and needs prompt care. Do not wait for the pain to go away or rely only on medication. Fever or facial swelling increase the urgency.
Why does my tooth hurt when I bite?
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Pain on biting may be related to infection at the root tip, a cracked tooth, a high filling or overload from clenching. Each cause has a different treatment, so an assessment is important.
Can sinusitis cause tooth root pain?
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Yes. The roots of the upper back teeth sit close to the maxillary sinus, and sinus inflammation can make those teeth ache, usually several at once and with nasal congestion. The dentist assesses whether the source is dental or not.
Where can I have tooth root pain treated in Mooca?
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In Mooca, Dr. Cléo Salustiano (CRO-SP 170844) sees patients at Rua Hipódromo, 1141, near Bresser-Mooca station, Monday to Sunday, from 8 a.m. to 10 p.m., including holidays. Appointments via WhatsApp (11) 97409-7834, in Portuguese, English or Spanish.
