What are the common causes of pus in the mouth?

Pus in the mouth is often an uncomfortable and unpleasant sign of infection. Dental abscesses and throat infections are common causes of pus. Advanced gum disease can also cause pockets of pus to form in the gums. Canker sores can also become infected and pus can ooze out of these lesions. Some piercings, particularly tongue piercings, can also leak a clear or white pus-like fluid, and can also become infected.

Dental abscesses, which are often very painful, are one of the most common causes of pus in the mouth. This can happen when the nerves in a tooth become infected, either from decay or injury. Pus can get trapped in the infected area.

In general, it is recommended to seek medical attention to treat an abscessed tooth. A dentist or other medical professional will often prescribe an antibiotic, and may also recommend encouraging drainage of the pus. This can usually be accomplished by keeping warm salt water in your mouth. If the abscess does not drain on its own, a dentist can drain it manually, either by making an incision in the gum or by extracting the tooth.

Some serious throat infections, such as strep throat and tonsillitis, can also cause pockets of pus in the mouth, particularly in the back of the throat. These illnesses are also often accompanied by other symptoms, such as a sore throat, fever, and swelling. An antibiotic is often necessary to clear up these infections. However, in severe chronic cases of tonsillitis, a tonsillectomy may also be performed.

Periodontitis is a type of dental disease that occurs when the soft tissues and bones that support the teeth become infected. This will often cause discomfort, receding gums, loose teeth, halitosis, and mouth sores. Pockets of pus can also form around the teeth in the advanced stages of this disease. Dentists often recommend a good oral hygiene regimen, and possibly an antibiotic, to treat these symptoms.

Canker sores can also be a source of pus in the mouth, particularly if they become infected. They are usually shallow, painful lesions in the soft tissues of the mouth. The gums, tongue, and cheek tissues are usually the most affected areas. These sores usually go away on their own, but they can become infected and pus can drain from them.

Tongue piercings can also cause pus in the mouth. Some drainage from a tongue piercing is generally considered normal, and this drainage will usually be light white in color, and will sometimes crust around the tongue jewelry. However, an infection in a tongue piercing will sometimes result in greenish-colored pus, and will often be accompanied by pain and swelling. When treating an infected piercing, people are generally advised to leave the piercing in place. Removing the piercing could cause the outer hole to close, trapping the infection inside the tongue.

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