Why Do Wisdom Teeth Hurt When Growing In?

Wisdom teeth, also known as third molars, are the final set of adult teeth to emerge, typically between the ages of 17 and 25. While some individuals experience their eruption without issue, pain and discomfort often accompany their arrival, signaling challenges as they settle into the jaw.

Understanding the Pain

Pain from wisdom teeth stems from several reasons as they emerge. One common cause is the physical pressure exerted by the tooth as it pushes through the gum and bone. This eruption pressure can lead to a dull ache or throbbing sensation.

Impaction is a frequent problem, occurring when there is insufficient space in the jaw for the wisdom tooth to erupt properly. An impacted tooth might be trapped or grow at an awkward angle against an adjacent tooth or bone. Horizontal impaction, where the tooth lies on its side, can be particularly painful due to pressure on the tooth in front.

Another source of discomfort is pericoronitis, an inflammation and infection of the gum tissue surrounding a partially erupted wisdom tooth. This condition arises when food particles and bacteria become trapped under a gum flap, leading to localized infection. Pericoronitis is more common in partially erupted lower wisdom teeth and can cause significant pain and swelling.

Less commonly, a fluid-filled sac, known as a cyst, can develop around an impacted wisdom tooth. This occurs when fluid builds up within the follicle that surrounds the developing tooth, preventing its eruption. These cysts can expand, putting pressure on the jawbone, nerves, and adjacent teeth.

Beyond Pain: Other Symptoms

Wisdom tooth eruption can manifest through other noticeable signs and discomforts. Swelling and tenderness of the gums in the back of the mouth are common indicators. This inflammation can make the affected area feel sensitive to the touch.

Difficulty opening the mouth wide, also known as trismus, or challenges with chewing can occur. This stiffness or pain in the jaw muscles often results from pressure exerted by the emerging tooth or inflammation. An unpleasant taste in the mouth or persistent bad breath can signal an infection.

Referred pain is possible, with headaches or jaw aches extending beyond the immediate tooth area. Pressure from an emerging wisdom tooth can radiate to other parts of the head and even the ears. Tenderness or swelling of the lymph nodes in the neck may develop, indicating the body’s immune response to an infection.

When to See a Dentist

While some discomfort during wisdom tooth eruption is normal, certain signs indicate the need for a dental evaluation. Consult a dentist if you experience severe, persistent, or worsening pain that does not resolve with basic care. Significant swelling in the jaw or face, or redness and inflammation that spread, warrant prompt attention.

Signs of infection, such as pus discharge from the gums, a fever, or chills, necessitate immediate dental care. Difficulty swallowing or breathing are serious symptoms that require urgent professional assessment. Persistent bad breath or an unpleasant taste in the mouth that does not improve with regular oral hygiene could signal an underlying problem like infection.

A dental visit is recommended if you suspect impaction or notice visible signs of a tooth growing incorrectly, such as angling into another tooth. Dentists use X-rays to assess the position of wisdom teeth and determine if intervention is necessary.

Strategies for Relief

Several strategies can help manage the discomfort associated with erupting wisdom teeth. For at-home relief, over-the-counter pain relievers like ibuprofen or acetaminophen can reduce pain and inflammation. Applying a cold compress or ice pack to the outside of the cheek can minimize swelling and numb the area.

Rinsing the mouth gently with warm salt water can reduce gum inflammation. A soft food diet can alleviate pressure and pain when chewing. Maintaining good oral hygiene, including gentle brushing and flossing around the affected area, is important to prevent food and bacteria accumulation.

In cases of infection, professional interventions may be necessary. A dentist might prescribe antibiotics to clear the infection. For more severe pain, prescription pain medication could be provided. A dental cleaning might be performed to remove trapped debris and reduce inflammation. If recurrent pain, impaction, or other complications persist, wisdom tooth extraction is a common and safe procedure.