Wisdom teeth have a well-deserved reputation for causing trouble. They are the last teeth to erupt, typically appearing in the late teens or early twenties, and because the jaw is often already full by this point, they frequently become partially or fully impacted – stuck beneath the gum or only partially emerged. One of the most painful and potentially serious complications of a partially erupted wisdom tooth is a condition called pericoronitis, and in some cases it can develop into a genuine dental emergency requiring urgent care from an emergency dentist.
Pericoronitis is an infection of the gum tissue surrounding a partially erupted tooth. When a wisdom tooth only partly breaks through the surface of the gum, it creates a flap of tissue – known as an operculum – that can trap food debris and bacteria underneath. This warm, dark environment is ideal for bacterial growth, and the result is inflammation, infection, and often considerable pain.
Symptoms of Pericoronitis
The symptoms of pericoronitis can range from mild and manageable to severe and debilitating. Recognising the signs early gives you the best chance of getting it treated before it escalates. Common symptoms include:
- Pain in the back of the mouth, jaw, or ear – often on one side
- Redness and swelling of the gum around the wisdom tooth
- Difficulty opening the mouth fully (trismus)
- Pain when swallowing
- A bad taste in the mouth, sometimes accompanied by a discharge of pus
- Bad breath (halitosis)
- Swollen and tender lymph nodes in the neck or jaw
- Fever or general feeling of being unwell in more severe cases
Mild pericoronitis may cause only localised soreness and minor swelling. Acute pericoronitis, however, can involve severe pain, high fever, and significant swelling that may affect your ability to open your mouth, eat, or swallow.
Why Pericoronitis Can Become Serious
What makes pericoronitis particularly concerning is its potential to spread. The infection does not always stay confined to the gum around the wisdom tooth. In more severe cases, it can spread into the soft tissues of the cheek, the floor of the mouth, the throat, or even the neck. This spreading infection – known as Ludwig’s angina in its most serious form – is a rare but potentially life-threatening condition that requires hospitalisation and intravenous antibiotics.
Even without reaching this extreme, an untreated pericoronitis infection can become progressively more difficult to manage, causing increasing pain, restricted jaw movement, and systemic symptoms such as fever. It is far easier – and safer – to treat pericoronitis early rather than allow it to escalate.
Acute vs. Chronic Pericoronitis
Pericoronitis can present in two distinct forms. Acute pericoronitis comes on suddenly and causes significant symptoms that demand prompt attention. Chronic pericoronitis tends to be a lower-grade, recurring discomfort that may flare up periodically, often when the immune system is under stress or when oral hygiene in the area slips. Both forms require dental assessment and treatment, though the urgency differs.
| Feature | Acute Pericoronitis | Chronic Pericoronitis |
|---|---|---|
| Onset | Sudden | Gradual or recurring |
| Pain level | Severe | Mild to moderate |
| Swelling | Often significant | Usually minor |
| Fever | Possible | Uncommon |
| Urgency | Emergency – same day care | Prompt appointment needed |
| Risk of spread | Higher | Lower but present |
How Pericoronitis Is Treated
Irrigation and Cleaning
The immediate priority in treating pericoronitis is to remove the debris and bacteria that have accumulated beneath the gum flap. The dentist will carefully irrigate the area with an antiseptic solution, which can bring significant relief and begin to reduce the inflammation. Patients are often advised to rinse with a warm salt water solution at home to help keep the area clean between appointments.
Antibiotics
In cases where the infection has spread or there are systemic symptoms such as fever or swollen lymph nodes, antibiotics may be prescribed to help bring the infection under control. Antibiotics alone will not cure pericoronitis – the underlying cause still needs to be addressed – but they can reduce the immediate severity of the infection.
Removal of the Operculum
In some instances, the overlying flap of gum tissue may be surgically trimmed (operculectomy) to remove the pocket where bacteria accumulate. This can be a long-term solution if the wisdom tooth itself is expected to fully erupt and align normally.
Wisdom Tooth Extraction
For many patients, particularly where pericoronitis is recurrent or where the wisdom tooth is impacted and unlikely to erupt properly, extraction of the wisdom tooth is the most definitive solution. Removing the tooth eliminates the pocket where bacteria accumulate and prevents future episodes. This is often carried out once the acute infection has settled, though in straightforward cases it may be performed at the same appointment.
Can Pericoronitis Resolve Without Treatment?
It is possible for a very mild episode of pericoronitis to settle down on its own, particularly if there was a specific trigger such as a piece of food becoming lodged under the gum flap. However, this does not mean the underlying problem has been resolved – the partially erupted tooth and its associated gum pocket remain, and further episodes are likely. Each recurring episode increases the risk of the infection becoming more severe, and over time it can cause damage to the surrounding teeth and bone.
Acute pericoronitis should always be assessed by a dentist. Do not assume that because the symptoms have eased slightly, the problem has passed. Antibiotics obtained without dental assessment may suppress the symptoms temporarily without treating the cause, and the infection is likely to return.
Home Care During a Pericoronitis Episode
While you are waiting to be seen, there are some steps you can take at home to help manage symptoms. Warm salt water rinses – a teaspoon of salt dissolved in a glass of warm water – can help to reduce bacterial levels around the affected tooth and provide some comfort. Rinse gently and thoroughly around the area a few times a day. Over-the-counter pain relief such as ibuprofen or paracetamol (taken as directed and only if appropriate for you) can help to manage the discomfort in the short term. Avoid foods that are likely to become trapped around the tooth, and be as gentle as possible when brushing in that area.
Do not try to lance or drain the area yourself. Home treatment is only a temporary measure – it can make you more comfortable while you wait for an appointment, but it cannot resolve the underlying infection or prevent it from returning.
Wisdom Teeth and Long-Term Planning
If your wisdom teeth are partially erupted and causing repeated episodes of pericoronitis, it may be worth having a conversation with your dentist about long-term management. Repeated infections in the same area are a strong indication that the tooth is unlikely to erupt fully and that extraction may be the most sensible course of action in the longer term. Early, planned extraction of a problematic wisdom tooth is generally simpler than waiting until the situation becomes more complex.
Your dentist may take an X-ray to assess the position of the wisdom tooth and the surrounding structures before making a recommendation. In more complex cases, you may be referred to an oral surgeon for the extraction.
When to Seek Emergency Treatment
You should contact us as soon as possible if you develop pericoronitis symptoms, but seek emergency care immediately if:
- You have significant swelling of the face or jaw
- You are having difficulty opening your mouth or swallowing
- You develop a fever alongside the dental pain
- The pain is severe and is not responding to over-the-counter pain relief
- You feel generally unwell in conjunction with the dental symptoms
For further information on wisdom teeth and the circumstances in which removal may be recommended, the NHS Inform page on wisdom tooth removal provides comprehensive guidance on what to expect from the process.
Pericoronitis can go from a minor irritation to a serious emergency in a relatively short space of time, particularly if the infection begins to spread. If you are experiencing pain or swelling around a wisdom tooth, please do not wait to see whether it settles on its own. Reach out to us at Tarbert Dental Surgery by calling 01880 820387 and we will arrange to assess and treat you as quickly as possible.