A tooth infection won’t go away on its own. The only way to fully eliminate it is through dental treatment, whether that’s draining the abscess, performing a root canal, or extracting the tooth. Antibiotics alone don’t cure tooth infections in most cases. They can help control the spread of bacteria, but without removing the source of infection inside the tooth or surrounding tissue, the problem will return.
Why Antibiotics Alone Won’t Fix It
This is the single most important thing to understand about tooth infections: the infection lives inside your tooth or in the pocket of pus that’s formed around it. Antibiotics circulating in your bloodstream can’t effectively penetrate that sealed-off space. They can slow the infection’s spread and reduce symptoms temporarily, but once you stop taking them, the bacteria that remain will multiply again.
The American Dental Association’s clinical guidelines are clear on this point. For most dental infections in otherwise healthy adults, antibiotics are not recommended as the primary treatment. The recommended approach is what dentists call “definitive conservative dental treatment,” meaning a procedure that physically removes the infected tissue. The ADA specifically recommends against prescribing antibiotics as an add-on for most dental conditions when a procedure is available, citing limited benefit and potential harm from unnecessary antibiotic use.
Antibiotics do play a role in certain situations: when the infection has spread beyond the tooth into surrounding tissues, when there are systemic symptoms like fever, or when dental treatment isn’t immediately available. In those cases, the typical course runs 3 to 7 days.
The Three Main Dental Treatments
Your dentist will recommend one of three procedures depending on how far the infection has progressed and whether the tooth can be saved.
Incision and Drainage
If a visible abscess has formed, your dentist makes a small cut to let the pus drain out, then washes the area with saline. Sometimes a small rubber drain is placed to keep the site open while swelling goes down. This relieves pressure and pain quickly, but it’s often a first step before a root canal or extraction to address the underlying cause.
Root Canal
A root canal saves the tooth by removing the infected tissue inside it. Your dentist drills into the tooth, clears out the diseased pulp, drains any abscess, then fills and seals the internal chambers. Back teeth often get a crown afterward for added strength. A front tooth root canal averages around $984, while a molar root canal runs closer to $1,337.
Extraction
When the tooth is too damaged to save, pulling it is the remaining option. The dentist removes the tooth and drains the infection at the same time. A simple extraction averages about $177, making it the least expensive option, though you may want to eventually replace the tooth with an implant or bridge.
Managing Pain Before and After Treatment
If you’re waiting for a dental appointment, over-the-counter pain relievers can make a real difference. The ADA recommends combining ibuprofen (400 to 600 mg) with acetaminophen (500 mg), taken every six hours. This combination targets pain through two different pathways and is more effective than either medication alone. For severe pain, your dentist may add a short prescription for a stronger pain reliever alongside this combination, typically for just 24 to 48 hours.
Salt water rinses can also help in the meantime. Swishing warm salt water reduces inflammation and lowers the bacterial load in your mouth. It won’t cure the infection, but it can ease discomfort and help keep the area cleaner. Mix about half a teaspoon of salt into a cup of warm water and rinse gently several times a day.
Avoid very hot or cold foods and drinks, which can intensify pain in an infected tooth. Try to chew on the opposite side of your mouth.
What Recovery Looks Like
Most people fully recover from a tooth infection within one to two weeks after treatment, though the timeline depends on the procedure and how severe the infection was.
After drainage alone, recovery often takes just a few days once the pressure from trapped pus is released. After a root canal, expect soreness for about five to seven days, but you can usually return to normal activities right away. Extraction takes the longest to heal, typically up to two weeks, as the gum and bone need to rebuild around the empty socket.
Swelling typically starts going down within 48 to 72 hours after any of these treatments. Some mild soreness or tenderness around the treated area is normal in the first few days, and you might feel discomfort while eating that gradually improves.
If your dentist prescribed antibiotics alongside a procedure, finish the entire course even if your symptoms disappear early. Stopping early leaves surviving bacteria a chance to regroup and cause a recurrence.
Warning Signs the Infection Has Spread
Most tooth infections stay localized, but in rare cases bacteria can spread into the jaw, neck, or even the bloodstream. This is a medical emergency. Go to an emergency room if you experience any of these:
- Facial swelling that makes it hard to breathe
- Difficulty swallowing
- Difficulty opening or closing your mouth
- Fever with chills or rapid heart rate
- Severe pain that keeps you awake and doesn’t respond to pain relievers
A spreading infection in the floor of the mouth can compromise your airway, and bacteria entering the bloodstream can trigger sepsis. These complications are uncommon but develop fast. Swelling that’s firm rather than soft, extends to your eye or neck, or appears on both sides of your face warrants immediate emergency care rather than waiting for a dental appointment.
What Happens If You Delay Treatment
Tooth infections don’t plateau. Without treatment, the bacteria continue destroying tissue, and the abscess grows. What might have been treatable with a root canal can progress to the point where extraction is the only option. The infection can spread into the jawbone, erode into neighboring teeth, or track into the soft tissues of the neck.
If cost is a barrier, dental schools offer supervised treatment at significantly reduced rates. Community health centers with sliding-scale fees are another option. Many dental offices also offer payment plans. A simple extraction at $177 is far less expensive than an emergency room visit for a spreading infection, and ERs generally can only provide antibiotics and pain relief, not the definitive treatment that actually resolves the problem. You’ll still need to see a dentist afterward.