Sudden tooth pain can happen without warning. While it may be caused by something temporary like tooth sensitivity, it can also signal tooth decay, a cracked tooth, gum disease or an infection that requires prompt dental care. Knowing what’s causing the pain is the first step toward protecting your oral health.
Below are the most common causes of sudden tooth pain, what symptoms to look out for and when it’s time to see your dentist.
What Causes Sudden Tooth Pain?
If you’re wondering, “Why does my tooth hurt all of a sudden?” several dental conditions could be responsible. Sudden tooth pain is commonly caused by tooth decay, a cracked tooth, exposed tooth roots, gum disease, an abscess, teeth grinding, sinus pressure or temporary sensitivity from teeth whitening treatments.
The severity, location and duration of the pain can help determine the underlying cause.
| Symptom | Possible Cause |
|---|---|
| Pain with cold drinks | Sensitivity, cavity, gum recession |
| Sharp pain when biting | Cracked tooth |
| Constant throbbing pain | Abscess |
| Pain in several upper teeth | Sinus infection |
| Jaw soreness in the morning | Teeth grinding |
| Brief sensitivity after whitening | Whitening products |
Tooth Decay or Cavities
For adults and children, a sharp twinge that passes from your tooth through your gums and jaw could indicate a cavity.
Wherever it develops, ongoing decay wears through the enamel and exposes the underlying dentin, making the tooth much more sensitive to temperature, pressure and sweets. Left unchecked, this concern progresses farther into your tooth, likely leading to an abscess or infection.
A cavity can go undetected until decay progresses and triggers sensitivity or pain when you eat sweets, bite down or consume something hot or cold.
Cracked or Fractured Tooth
Habits such as teeth grinding, clenching your jaw, playing sports without a mouthguard or chewing on hard objects can greatly increase your risk of a cracked or fractured tooth. Symptoms include:
- Pain when biting
- Pain when releasing your bite
- Sensitivity to cold
The resulting crack isn’t always visible to the naked eye. Even small cracks can worsen over time, so contact your dentist promptly if the pain continues or returns when biting.
Irritated Tooth Nerve
Pulpitis occurs when the soft tissue inside a tooth, known as the pulp, becomes inflamed. Because the pulp contains nerves and blood vessels, this inflammation can cause pain that extends along the jaw or feels similar to an earache.
Several causes can trigger pulpitis, including deeper cavities, physical trauma or multiple dental procedures performed on the same tooth.
Gum Recession
Aggressive brushing, aging and gum disease can cause the gums to pull away from the teeth. As the tooth root becomes exposed, you may experience an aching or sharp sensation during meals or routine dental care.
Hot, cold, sweet or acidic foods may trigger pain once the tooth root becomes exposed. Without treatment, gum recession can continue to worsen over time.
Gum Disease
Gum disease is one of the leading causes of tooth loss in adults and often develops gradually. While pain and sensitivity aren’t early symptoms, inflammation can increase your discomfort, as the condition progresses from gingivitis to periodontal disease.
As gum disease progresses, the gums pull away from the teeth and expose sensitive tooth roots, making discomfort more noticeable. Symptoms include:
- Bleeding gums
- Red, swollen or tender gums
- Receding gums
- Persistent bad breath or a bad taste
Abscessed Tooth
An untreated cavity allows bacteria to travel to the pulp of your tooth. Pain concentrated on one side of the jaw results, potentially accompanied by swelling, a fever or a persistently foul taste in your mouth.
An abscess is considered a dental emergency because the infection can spread if left alone. Treatment may involve draining the infection, performing a root canal or extracting the tooth, depending on its location and severity.
Sinus Infection
What if your teeth appear perfectly fine, but pressure and pain linger? Swollen, poorly draining or infected sinus cavities could be irritating the teeth below. When the nerve endings become compressed, an aching or sharp sensation may be concentrated around multiple teeth or your jaw.
Patients with this concern may also experience a stuffy nose or pressure on other parts of the face. If your dentist determines your teeth are healthy, they may refer you to an ENT specialist for further testing.
Teeth Grinding and Erosion
Over time, grinding can wear down teeth and contribute to jaw stiffness, enamel loss, fractures and sensitivity. Also called bruxism, this condition may be related to stress, sleep habits or other factors.
The resulting erosion may fly under the radar for years until the nerves become aggravated by:
- Extreme hot and cold temperatures
- Acidic or sweet foods
- Brushing too hard
Treatment may include a custom nightguard, changes to daily habits or other care based on the cause and extent of the damage.
Teeth Whitening Products
Temporary sensitivity is a common side effect of teeth whitening products and procedures. It can look like:
- Sensitivity after an in-office whitening procedure that usually subsides within 24 – 72 hours.
- Greater tooth or gum sensitivity after regular use of whitening toothpaste or strips.
Food Impaction
Fibrous and sticky foods can sometimes become tightly lodged between teeth, causing localized irritation.
Carefully flossing the area can often remove the trapped food and relieve the discomfort. If pain continues after the debris is removed, another dental problem may be present. When debris is ignored, it may affect the surrounding gums, potentially attracting bacteria and an infection.
Can Tooth Pain Go Away on Its Own?
Mild tooth sensitivity caused by temporary irritation may improve on its own within a day or two. However, pain caused by tooth decay, a cracked tooth, gum disease or an infection typically won’t resolve without treatment. Even if the pain disappears temporarily, the underlying problem may continue to worsen. If your tooth pain persists, returns or becomes more severe, schedule an evaluation with your dentist.
Do You Need to See a Dentist?
If you develop sudden tooth pain, pay attention to when it occurs, what triggers it and whether other symptoms appear. While waiting to see your dentist, you may be able to manage discomfort by:
- Avoiding food and drinks that trigger sensitivity
- Gently flossing to remove trapped food
- Using an over-the-counter pain reliever as directed
Because a growing infection can impact your overall health, schedule an appointment if:
- Tooth pain lasts more than 24 – 48 hours
- Pain keeps returning
- Sensitivity is worsening
- You experience pain while chewing
Seek urgent or same-day dental care if you have:
- Facial or gum swelling
- Fever or pus around a tooth
- Severe or uncontrollable pain
- A knocked-out or badly injured tooth
If swelling makes it difficult to breathe, swallow or speak, or extends toward the eye or neck, seek emergency medical care.
Frequently Asked Questions
Why does my tooth hurt only when I bite down?
Pain when biting down may be caused by a cracked tooth, a loose filling or crown, tooth decay or inflammation around the root of the tooth. Because these conditions can worsen over time, it’s important to schedule a dental evaluation if the pain persists or becomes more severe.
Why does cold water make my tooth hurt?
Sensitivity to cold is often caused by worn enamel, gum recession, tooth decay, a cracked tooth or an exposed tooth root. The discomfort may last only a few seconds or linger longer, depending on the underlying cause. If cold sensitivity develops suddenly or continues to worsen, your dentist can determine what’s causing it.
Can stress cause tooth pain?
Yes. Stress can contribute to tooth pain by causing you to clench or grind your teeth, often while you sleep. This habit, known as bruxism, can wear down enamel, increase tooth sensitivity, and lead to jaw pain, headaches or cracked teeth. Managing stress and wearing a custom nightguard may help protect your teeth.
Can sinus pressure cause tooth pain?
Yes. A sinus infection or significant sinus congestion can create pressure near the roots of your upper back teeth, causing discomfort that feels like a toothache. If your teeth appear healthy and your symptoms include nasal congestion, facial pressure or a runny nose, sinus inflammation may be the source of the pain.
Can a cavity cause sudden tooth pain?
Yes. A cavity may not cause noticeable symptoms at first, but as decay reaches the inner layers of the tooth, it can trigger sudden pain or sensitivity when eating sweets or drinking hot or cold beverages. Treating cavities early can help prevent more extensive damage and discomfort.
Is sudden tooth pain always an emergency?
Not always. Mild sensitivity that resolves quickly may not require emergency treatment, but persistent, severe or worsening tooth pain should never be ignored. Contact your dentist as soon as possible if pain lasts longer than a day or two, or if it’s accompanied by swelling, fever, pus or difficulty swallowing or breathing, as these symptoms may indicate a serious infection.
Don’t Ignore Sudden Tooth Pain
While some cases of tooth sensitivity resolve on their own, persistent or severe pain is often your body’s way of telling you something isn’t right. The sooner the cause is diagnosed, the more treatment options are typically available, and the more likely you are to avoid more extensive dental care.
If you’re experiencing sudden tooth pain, our team can identify the cause, relieve your discomfort and recommend the most appropriate treatment to protect your smile. Contact Smile Dental Center to schedule an appointment today.