Pericoronitis Treatment: Symptoms, Home Care, And When To See A Dentist

Pericoronitis treatment is usually needed when a wisdom tooth only partly breaks through the gum. A flap of gum stays over the tooth, and food gets stuck under it. The area turns sore and swollen. A dentist can clean it out, check the tooth, and plan the next step.

TL;DR

• Clean gently around the sore area and book a dental exam

• Use warm saltwater rinses for short-term relief if they feel comfortable

• Get urgent care for fever, spreading swelling, or trouble opening your mouth

• Ask about extraction if the same wisdom tooth flares more than once

What Is Pericoronitis?

Pericoronitis is an infection of the gum around a tooth that hasn't fully come in. It almost always affects a lower wisdom tooth. Most patients are in their late teens or twenties, when these teeth arrive.

When a wisdom tooth runs short of room, it can stall halfway out. The gum over its back half stays put as a loose flap, called an operculum. Under that flap sits a small pocket. Food and bacteria slip into it easily, and a toothbrush can't reach them.

Some of these teeth are still on their way and will finish coming in. Others are stuck for good. The impacted wisdom tooth guide explains how dentists tell the two apart.

What Does Pericoronitis Feel And Look Like?

It usually starts as a sore spot behind the last molar. Chewing on that side hurts, and brushing there stings. Over a day or two, other pericoronitis symptoms tend to follow:

• A red, tender gum flap behind the last lower molar

• Swelling that makes the flap look puffy or shiny

• A bad taste or bad breath that brushing doesn't fix

• Pain that spreads toward the ear, jaw, or throat

• Pus that seeps out when food or your tongue presses the flap

• Stiffness when opening wide

Pain when you close your mouth is worth noticing. It often means the upper wisdom tooth is biting down on the swollen flap. Every bite bruises it again, so it struggles to heal.

Still, only an exam can confirm pericoronitis. A cavity, an abscess, or a sore jaw joint can feel much the same. SDCEP guidance notes that jaw joint pain is often mistaken for it.

Why Does A Gum Flap Become Infected?

The pocket under the flap is small, warm, and almost impossible to clean. Plaque builds up there quickly, and food gets pushed in with every meal. Bacteria that thrive without much oxygen do very well in a space like this.

The upper tooth often makes things worse. When it bites onto the flap, it leaves small cuts in the gum. Those cuts let bacteria deeper into the tissue.

Flare-ups also tend to follow a dip in your defenses. A cold, a stressful week, poor sleep, or your period can all set one off. People with poorly controlled diabetes flare more often and heal more slowly.

Oddly, upright wisdom teeth cause more trouble than tilted ones. An upright tooth often breaks partly through, so its pocket stays open to the mouth. A tooth lying on its side is more likely to stay fully buried.

That is why the pain often fades, then comes back. Rinsing and cleaning settle the flap for a while. The pocket is still there, though. Plaque builds up again unless the tooth comes all the way in.

How Do Dentists Diagnose Pericoronitis?

A diagnosis usually takes one short visit. The dentist looks at the flap for redness, swelling, and pus. They may gently lift its edge with a blunt instrument to see underneath. Leave this part to the dentist, since poking at home pushes debris deeper.

The dentist will also check whether the upper tooth is hitting the flap. Swollen glands in the neck, a fever, or trouble opening wide suggest the infection has spread.

An X-ray, usually a panoramic one, shows what the gum is hiding. It reveals the tooth's angle and whether there is room for it to come in. It can also show a cavity on the back of the second molar. That surface decays easily when food sits against it for months.

A few other problems can look like pericoronitis. A tooth abscess starts inside a tooth or in the gum around a fully erupted one. Food jammed between two teeth causes sharp, local pain. Jaw joint problems often hurt when chewing on either side. Each needs different care, so the diagnosis comes first.

What Can You Do For Pericoronitis At Home?

Pericoronitis treatment at home can take the edge off the pain until you see a dentist. It can't clear out the pocket, so it rarely fixes the problem for good. Until your appointment, these steps help most adults:

• Brush the area gently with a soft brush, angled toward the flap

• Rinse with warm salt water after meals and before bed

• Eat soft foods and chew on the other side

• Drink plenty of water, even if swallowing feels sore

• Take over-the-counter pain relief exactly as the label directs

The saltwater mouth rinse guide covers the right mix and how often to use it. Swish slowly, since hard rinsing hurts without reaching any deeper.

Ibuprofen and similar drugs ease both pain and swelling. Skip them with stomach ulcers, kidney disease, or blood thinners, unless a doctor approves. The same goes for late pregnancy. Acetaminophen is often a safer choice in these cases. People with liver disease or heavy alcohol use should check with a doctor first. This comparison of Tylenol vs. ibuprofen for tooth pain explains how the two differ.

A few things people try at home tend to backfire. Don't poke under the flap with toothpicks or floss picks. Don't squeeze, cut, or burn the gum. Never take leftover antibiotics from an old prescription. Placing an aspirin on the gum also burns the tissue. Book a dental visit within a few days, or sooner if swelling spreads.

How Does A Dentist Treat Pericoronitis?

Most of the treatment is cleaning. The dentist numbs the area if it's too sore to touch. Then they flush under the flap with saline or an antiseptic. Trapped food and plaque come out with it. SDCEP prescribing guidance lists this cleaning as the first step.

If the upper wisdom tooth is biting the flap, the dentist may smooth its sharp edge. Often that upper tooth has nothing to chew against and does no real work. Taking it out is quick and stops the flap from being bruised with every bite.

You may be told to use a chlorhexidine rinse for a week or two. Use it only as directed. It can stain teeth brown and dull your sense of taste for a while. Allergic reactions are very rare, as the HSE pericoronitis guideline notes. This review of chlorhexidine in dentistry explains how it works.

Expect a short recheck a few days later. Once the flap calms down, the dentist will talk through long-term options. These get written into your dental treatment plan.

What Does Pericoronitis Treatment Cost?

Pericoronitis treatment cost depends on how much care you need. A first visit usually includes an emergency exam, an X-ray, and cleaning under the flap. Dental insurance often covers exams and X-rays well. Costs go up if the tooth needs to come out. The tooth extraction cost guide puts impacted wisdom tooth removal at $200 to $900 or more.

When Are Antibiotics Needed?

Less often than most people think. A flare that stays around the tooth usually clears with cleaning and good home care. SDCEP guidance and the HSE guideline keep pericoronitis treatment antibiotics for cases like these:

• Fever or feeling unwell overall

• Facial swelling that spreads beyond the gum

• Trouble opening the mouth, called trismus

• Swollen glands in the neck

• A weakened immune system, judged case by case

• Swelling that doesn't improve after a proper cleaning

Antibiotics can't wash food and plaque out of the pocket. If the area isn't cleaned, the flap often flares again soon after the last pill. Even so, they are widely overused. In a 2021 systematic review, almost 75% of surveyed dentists prescribed them for pericoronitis.

Only a dentist or doctor should prescribe antibiotics, after checking your allergies and other medicines. Some of them interact with blood thinners or alcohol.

Should The Gum Flap Or Wisdom Tooth Be Removed?

One mild flare doesn't mean you need surgery. If the tooth has room to come in, it is usually cleaned and watched. A second or third flare from the same tooth is different. At that point, removing it makes sense for most patients.

The best option depends mostly on how the tooth sits. Here is how dentists usually match the situation to the treatment.

Removing only the flap is called an operculectomy. It can be done with a scalpel or a laser. It only works when the tooth is upright and has space. Over a tooth that stays half buried, the flap tends to grow back.

Taking the tooth out solves the problem for good. It also helps the second molar. The gum and bone behind it tend to heal once the wisdom tooth is gone. The wisdom teeth removal and recovery guide covers the surgery. The tooth extraction healing stages guide shows what normal healing looks like afterward. It also explains how to tell normal soreness from dry socket.

When Should You See A Dentist Or Go To The ER?

Most cases can wait a day or two for a dental visit. Some signs mean the infection is moving toward the throat or neck, and those can't wait. Use this table to decide how fast to act.

Swelling under the tongue or in the neck can narrow the airway within hours. That is the main danger of leaving pericoronitis untreated. Be careful if the pain eases while the swelling grows. That often means the infection is spreading, so get seen the same day.

How Long Does Pericoronitis Take To Settle?

It varies from person to person. A mild flare often calms down within a few days of a professional cleaning. A flare with fever or a stiff jaw takes longer. It may need antibiotics and a second visit.

A thorough cleaning speeds things up. So does stopping the upper tooth from hitting the flap. A badly angled tooth or a spreading infection slows healing down.

If the pain returns after it had eased, food has probably packed in again. Call the dentist and skip any leftover medicine. A second flare is also a good moment to ask about long-term options.

Can Pericoronitis Come Back?

Yes, and it often does. Repeated flares usually mean the pocket under the flap can't be kept clean.

Take a typical case. A 22-year-old has a lower wisdom tooth half covered by gum. The first flare clears after a cleaning and a week of rinses. Four months later, during exams and a cold, it's back. The X-ray shows the tooth tilted against the second molar with no room to come in. Each cleaning helps for a while, yet the pocket stays. For this patient, extraction is the practical answer.

If you're waiting for a decision on the tooth, a few habits help keep flares away:

• Start brushing at the back molars so they never get skipped

• Use a small-headed or single-tuft brush to reach behind the last tooth

• Rinse with water or salt water after meals

• Keep regular cleanings and mention any bad taste or tenderness early

Bottom Line

Home care can ease pericoronitis pain for a few days. A dental cleaning deals with the food and plaque trapped under the flap. If flares keep coming back, ask about removing the flap or the tooth. Get emergency care for trouble breathing, trouble swallowing, or fast-spreading swelling.