Pericoronitis occurs when the gum tissue surrounding a partially erupted tooth becomes inflamed or infected. This condition most often affects lower third molars (wisdom teeth) that have only partially emerged through the gums, leaving a flap of gum tissue covering part of the tooth.Food particles, plaque, and bacteria can become trapped beneath this flap of gum tissue, creating an environment where bacteria can multiply. Because the area is difficult to clean effectively with normal brushing and flossing, irritation and infection may develop in the surrounding gum tissue.If inflammation persists, the affected area may become swollen and painful. In some cases, the infection may spread to nearby tissues in the jaw or throat. Pericoronitis may occur intermittently as the tooth continues to erupt, and treatment often focuses on reducing infection and addressing the underlying tooth position.
Understanding
Pericoronitis
Clinical Significance
Can lead to gum swelling, pain around the erupting tooth, difficulty opening the mouth, localized infection, spread of infection to nearby tissues, and damage to surrounding gum tissue if untreated.
Common Causes
Partially erupted wisdom teeth, trapped food debris under gum flaps, plaque accumulation around erupting teeth, poor access for cleaning, crowding of teeth.
Signs & Symptoms
Swollen or inflamed gum tissue around a tooth, pain near a partially erupted tooth, bad breath, unpleasant taste in the mouth, difficulty opening the mouth, tenderness when chewing, swelling of nearby lymph nodes in some cases.
How It's Detected
Clinical dental examination, visual inspection of inflamed gum tissue around a partially erupted tooth, evaluation of symptoms, dental X-rays to assess tooth position and eruption status.
Treatment Options
Irrigation and cleaning of the area, improved oral hygiene, antimicrobial rinses, antibiotics when appropriate, removal of the gum flap (operculectomy), extraction of the affected tooth, monitoring if symptoms resolve.
Benefits to Treatment
Reduces infection and inflammation, relieves pain and swelling, improves ability to clean the area, prevents recurrent infections, and reduces risk of complications.
Prevention
Maintaining good oral hygiene around erupting teeth, rinsing after meals to remove trapped debris, regular dental exams to monitor wisdom tooth eruption, early evaluation of partially erupted teeth.
Frequently Asked Questions
What causes pericoronitis?
Pericoronitis most commonly occurs when a tooth, usually a wisdom tooth, only partially erupts through the gums. When this happens, a flap of gum tissue may remain over part of the tooth. Food particles and bacteria can become trapped beneath this flap, creating a space where plaque accumulates and irritation develops. Because the area can be difficult to clean with normal brushing and flossing, bacteria may multiply and cause inflammation or infection of the surrounding gum tissue.
Which teeth are most affected by pericoronitis?
Pericoronitis most frequently affects lower third molars, also known as wisdom teeth. These teeth typically erupt during the late teenage years or early adulthood and often have limited space in the jaw to emerge properly. When wisdom teeth erupt only partially or at an angle, the surrounding gum tissue may trap debris and bacteria. Although less common, pericoronitis can occasionally occur around other erupting teeth that are partially covered by gum tissue.
What does pericoronitis feel like?
Pericoronitis often causes localized discomfort around the affected tooth. People may notice swelling, tenderness, or pain in the gums near a partially erupted tooth. The area may feel sore when chewing or when pressure is applied. Some individuals experience bad breath or an unpleasant taste due to trapped bacteria and food debris. In more severe cases, swelling may make it difficult to open the mouth fully or cause discomfort when swallowing.
Can pericoronitis go away on its own?
In some cases, mild pericoronitis may improve if the trapped debris is removed and the area is cleaned thoroughly. Rinsing the mouth and improving oral hygiene around the erupting tooth may help reduce irritation. However, the condition can recur if the tooth remains partially erupted and continues to trap bacteria beneath the gum flap. Because of this, dentists often evaluate the position of the tooth and may recommend treatment to prevent repeated infections.
When is a wisdom tooth removed for pericoronitis?
A wisdom tooth may be recommended for removal when pericoronitis occurs repeatedly or when the tooth does not have enough space to erupt properly. Recurrent infections may indicate that the tooth will continue to trap bacteria and irritate the surrounding gum tissue. Dentists evaluate the tooth’s position using clinical exams and dental X-rays to determine whether extraction may reduce the risk of future infections and improve long-term oral health.