How long a toothache lasts depends on the cause. Here's what the evidence shows.

How long does toothache last depends on what’s causing it

How long does toothache last? The honest answer is that duration depends entirely on the underlying cause and whether you receive appropriate dental treatment. A toothache from reversible pulpitis (early inflammation) might resolve in 3 to 7 days with proper care, while pain from irreversible pulpitis or an abscess will persist until a dentist removes the infected tissue. ⁴

Marketing content and popular advice often suggest that home remedies can “cure” a toothache within days. The clinical evidence tells a different story. Pain from dental infection does not resolve on its own because the source (bacteria inside the tooth or surrounding tissue) remains untreated. ¹¹

The duration question is inseparable from the treatment question. Attempting to manage dental pain without addressing the cause is the pattern associated with prolonged suffering and complications, not faster resolution.

Popular home remedies have no clinical evidence behind them

Search “how to relieve tooth pain” and you will find lists of home remedies: clove oil, salt water rinses, cold compresses, garlic paste, vanilla extract. These recommendations appear on hundreds of websites, health blogs, and even some dental practice pages. None of them have supporting clinical trial evidence for treating toothache.

A 2016 Cochrane review examined all available randomized controlled trials for treating irreversible pulpitis (infected tooth pulp). The review found no studies testing any home remedy against placebo or standard care. ¹¹ The recommendations circulate because they are repeated, not because they have been tested.

Cold compresses can provide temporary comfort by numbing the area, but this is symptomatic relief that does nothing to address infection or inflammation. Salt water rinses may help with oral hygiene around an affected tooth, but no trial has shown them to reduce pain duration or resolve infection. Clove oil contains eugenol, a compound with mild anesthetic properties, but clinical data on its efficacy for dental pain do not exist.

The pattern here is important. Home remedies are presented as alternatives to dental care, but they function (at best) as brief distractions while the underlying infection worsens. If a toothache improves after using a home remedy, the cause was likely mild and self-limiting, not resolved by the remedy itself.

What actually works: NSAIDs and combination pain relief

The clinical trial evidence for over the counter pain relief for toothache is clear and consistent. Nonsteroidal anti-inflammatory drugs (NSAIDs) outperform acetaminophen alone, and combination therapy (ibuprofen plus acetaminophen) outperforms single agents. ^{4 8}

A 2016 systematic review of randomized controlled trials on endodontic pain found ibuprofen (400 mg to 600 mg) provided superior pain relief compared to acetaminophen (1000 mg), with a number needed to treat of 2.4 for at least 50% pain relief over 6 hours. ⁴ The same review found that combining ibuprofen and acetaminophen produced better outcomes than either drug alone.

A 2018 randomized, double-blind trial tested a fixed-dose combination of acetaminophen (1000 mg) and ibuprofen (300 mg) in patients with moderate to severe postoperative dental pain. The combination achieved significantly greater pain relief than placebo, with peak effect occurring within 2 hours and duration lasting 6 to 8 hours. ⁹

Comparative efficacy of over the counter dental pain relief options based on clinical trial data. NNT = number needed to treat (lower is better). Data from systematic reviews and meta-analyses. <Cite n={4} /> <Cite n={8} /> <Cite n={9} />

A 2025 comparison trial in acute toothache patients found that combinations including naproxen sodium (550 mg) with codeine (30 mg) provided statistically significant pain reduction, but the addition of an opioid introduced side effects (nausea, constipation, sedation) without clinically meaningful improvement over NSAID-acetaminophen combinations. ³

The evidence pattern is consistent. For over the counter dental pain relief, ibuprofen-acetaminophen combinations deliver the best balance of efficacy, onset, and safety. Single-agent NSAIDs come second. Acetaminophen alone is the least effective option among the tested agents. ^{8 12}

Antibiotics alone won’t cure an infected tooth

The most clinically significant finding in the toothache evidence base is this: antibiotics without dental intervention do not cure an infected tooth. A 2016 Cochrane review examined the use of systemic antibiotics for irreversible pulpitis and found insufficient evidence to support antibiotics as a standalone treatment. ¹¹

Irreversible pulpitis (infection of the tooth pulp) and periapical abscess (infection at the root tip) require removal of the infected tissue. Antibiotics can reduce systemic spread of infection and may provide temporary symptomatic relief, but the bacterial source inside the tooth or periapical tissue remains. When the antibiotic course ends, the infection typically returns. ¹¹

A 2017 randomized trial comparing analgesic combinations for acute periradicular abscess found that pain management was possible with NSAIDs and combination therapy, but all patients required subsequent dental intervention (root canal or extraction) to resolve the infection. ¹⁰ Analgesics control pain; they do not eliminate the infection.

This evidence contradicts a common patient behavior pattern: seeking antibiotics from a physician or urgent care provider to avoid or delay dental treatment. The pattern extends pain duration and increases complication risk (abscess expansion, cellulitis, sepsis in rare cases). The clinical recommendation is unambiguous. Antibiotics may be indicated as an adjunct to dental treatment in cases of spreading infection or systemic involvement, but they are not a substitute for source control. ¹¹

When pain means you need urgent dental care

Certain pain patterns and associated symptoms indicate the need for same-day or next-day dental evaluation. These signals suggest infection progression or complications that home management and over-the-counter analgesics cannot address.

Seek urgent dental care if you experience any of the following:

Swelling. Facial swelling, particularly if it is increasing, warm to touch, or accompanied by fever, suggests abscess formation or cellulitis. Swelling that affects breathing or swallowing is a dental emergency requiring immediate hospital evaluation. ¹⁰

Fever. A fever (temperature above 100.4°F or 38°C) alongside toothache indicates systemic infection. This is not a condition that resolves with over-the-counter pain relief. ¹¹

Pain that wakes you at night or prevents eating. Severe, unrelenting pain that disrupts sleep or makes eating impossible signals irreversible pulpitis or abscess. Analgesics may dull the pain temporarily, but the infection will not resolve without dental intervention. ⁴

Persistent pain after 48 hours of NSAID use. If maximum-dose ibuprofen or combination therapy provides no meaningful relief after two days, the underlying cause requires professional evaluation. ⁵

Visible pus or a “pimple” on the gum. A draining fistula (a pimple-like bump that releases pus) is a sign of chronic abscess. The infection is actively draining, and dental treatment is needed to eliminate the source. ¹¹

Trauma to the tooth. A tooth that is cracked, chipped, or knocked loose requires same-day dental assessment. Pain following trauma may indicate pulp exposure or root fracture. ⁴

Pain alone, even severe pain, does not always indicate an emergency, but pain combined with any of the above signs does. The evidence-based recommendation is straightforward. If the tooth hurts and you see swelling, fever, or visible infection, dental care is required within 24 hours. ¹⁰

How long toothache lasts with vs. without treatment

The duration of toothache pain depends on the cause and, critically, on whether the cause is treated. A toothache from reversible pulpitis (early inflammation without infection) may resolve in 3 to 7 days if the irritant (such as a cavity or loose filling) is removed and the tooth is restored. Without treatment, reversible pulpitis typically progresses to irreversible pulpitis, and pain persists or worsens. ¹¹

Irreversible pulpitis does not resolve on its own. The infected pulp tissue inside the tooth remains a bacterial reservoir. Pain may fluctuate (periods of severe pain alternating with dull ache), but it does not disappear without root canal treatment or extraction. Patients who delay care often report weeks or months of intermittent pain before seeking definitive treatment. ¹¹

Postoperative pain following root canal therapy or extraction is a separate category. A 2023 network meta-analysis found that postoperative dental pain peaks within 6 to 12 hours after the procedure and typically resolves within 3 to 5 days with appropriate analgesic management. ⁷ Preoperative administration of NSAIDs (such as ibuprofen 600 mg taken 30 to 60 minutes before the procedure) has been shown to reduce postoperative pain intensity and duration. ⁶

The evidence shows a clear pattern. Dental pain that is treated at the source (by removing infection or repairing the damaged tooth) resolves within days. Dental pain that is managed only with analgesics or antibiotics, without addressing the underlying cause, persists for weeks to months and often worsens. ¹¹

A common question is whether antibiotics shorten pain duration. They do not. A 2016 Cochrane review concluded that antibiotics for irreversible pulpitis provided no significant pain relief compared to placebo and did not eliminate the need for dental intervention. ¹¹ Pain reduction in patients taking antibiotics is typically attributable to concurrent NSAID use, not the antibiotic itself.

The clinical recommendation is simple. If you want the pain to stop, the cause must be treated. Over-the-counter pain relief and antibiotics can make the pain tolerable while you arrange dental care, but they do not shorten the duration of untreated dental infection. The only intervention shown to resolve toothache pain from irreversible pulpitis or abscess is removal of the infected tissue. ¹¹