A cracked tooth hurts most when you bite down or release, and the sharp, unpredictable pain can make eating miserable. You can reduce the pain temporarily at home, but a crack in a tooth won’t heal on its own. The goal is to manage your discomfort now while protecting the tooth from further damage until you can get professional treatment.
Immediate Pain Relief at Home
Start with an over-the-counter pain reliever like ibuprofen or acetaminophen. Ibuprofen also reduces inflammation, which helps if the tissue around the crack is swollen. One important warning: never place aspirin or any painkiller directly against your gums, as it can burn the tissue.
Rinse your mouth with warm water to clean the area and soothe irritation. If the crack resulted from an injury or impact, hold a cold compress against the outside of your cheek in 15-to-20-minute intervals to limit swelling.
Over-the-counter toothpaste designed for sensitive teeth can also help. These products contain ingredients that block pain signals from the tooth’s surface to the nerve. They won’t fix the crack, but using one for a few days can take the edge off sensitivity while you wait for a dental appointment.
What Makes the Pain Worse
Cracked tooth pain is reactive. It flares in response to specific triggers, so avoiding those triggers is one of the fastest ways to get relief. The big ones are pressure, temperature, and sugar. Biting down forces the crack open slightly, exposing the sensitive inner layers of the tooth. Hot and cold foods cause the tooth to expand and contract, irritating the nerve. Sweet foods can seep into the crack and provoke a sharp sting.
Until you see a dentist, adjust how and what you eat:
- Avoid hard or crunchy foods like nuts, popcorn, ice, raw carrots, and hard candies. These put direct force on the crack and risk extending it deeper.
- Skip sticky or chewy foods like caramel, taffy, and dried fruit. They grip the tooth and pull on the cracked segment.
- Stick to lukewarm temperatures. Extremely hot or cold food and drinks are the most common sensitivity triggers.
- Chew on the opposite side of your mouth to keep pressure off the damaged tooth.
- Cut food into small pieces and eat slowly so you control how much force your teeth absorb.
If you grind your teeth at night, that’s a significant problem. Grinding puts repeated, heavy pressure on the crack and can split the tooth further. A drugstore night guard is a reasonable short-term option until you get a custom one from your dentist.
Why the Pain Comes and Goes
Cracked tooth pain is notoriously inconsistent, which is part of what makes it so frustrating. You might go hours without discomfort, then get a jolt of pain from a single bite. This happens because the crack flexes. When you chew, the two sides of the crack shift apart slightly, tugging on the pulp (the nerve and blood supply inside the tooth). When you release your bite, the crack snaps back together. That movement is what causes the characteristic sharp, momentary pain.
The intermittent pattern often leads people to assume the problem isn’t serious. But a crack doesn’t stabilize on its own. Over time, bacteria work their way deeper into the fracture line, and the pulp becomes increasingly inflamed. What starts as occasional sensitivity can progress to constant, throbbing pain if the nerve becomes infected.
How Dentists Treat Cracked Teeth
Treatment depends entirely on how deep the crack goes and whether the nerve is involved. For a tooth with no symptoms or very mild sensitivity, monitoring without any restoration may be all that’s needed. But once a cracked tooth is causing pain, the evidence strongly favors a full crown (a cap that covers the entire biting surface) to hold the tooth together and prevent the crack from spreading.
Research on this point is clear. Cracked teeth that receive only a filling or partial restoration without full coverage over the cusps have about 3 times the risk of nerve complications and 8 times the risk of eventually needing extraction compared to teeth that get a full crown. A crown distributes biting force evenly across the tooth instead of concentrating it at the crack line.
If the crack has already reached the nerve and caused irreversible damage, a root canal becomes necessary before the crown is placed. This removes the inflamed or infected pulp, eliminates the pain at its source, and preserves the tooth structure. Cracked teeth that undergo root canal treatment and then receive a full crown have a 5-year survival rate of about 82% and a 10-year survival rate around 66%. Teeth that start with healthy gum pockets (no deep probing around the tooth) do even better, with 76% still functioning at 10 years and 64% at 15 years.
Those numbers matter because they show that saving a cracked tooth with root canal treatment is a realistic, long-term option. It’s not just buying time. However, skipping the crown after a root canal is risky: teeth that don’t get crowned after the procedure have more than 11 times the risk of extraction.
When a Crack Becomes an Emergency
Most cracked teeth need prompt attention but not an emergency room visit. The situation changes if you develop signs of a tooth abscess, which means bacteria from the crack have caused an infection. Watch for:
- Pain that becomes constant and throbbing rather than intermittent
- Swelling in the gum around the tooth, or swelling in your face or jaw
- Fever
- Swollen lymph nodes in your neck
- A persistent bad taste or bad breath that won’t resolve
A dental abscess can spread to surrounding tissues and, in rare cases, become a serious systemic infection. If you develop fever alongside facial swelling, that combination warrants urgent care, not a wait-and-see approach.
Protecting the Tooth Until Your Appointment
Think of the time between now and your dental visit as damage control. Every force the cracked tooth absorbs is a chance for the fracture to deepen. Beyond the dietary changes listed above, avoid chewing gum, don’t use the cracked tooth to tear open packages (a surprisingly common habit), and be careful with hard-bristled toothbrushes near the area. Brush gently with a soft-bristled brush and keep the area clean to reduce the chance of bacteria entering the crack.
If a piece of the tooth has actually broken off and left a sharp edge cutting your tongue or cheek, you can cover it temporarily with dental wax or sugar-free gum until you get to the dentist. This won’t treat the crack, but it protects the soft tissue in your mouth from further irritation.