What is the reason for the sore gums on the left?

Gingival swelling and pain on the left side may be caused by a variety of reasons, such as local irritation, periodontitis, wisdom tooth pericoronitis, periapical periodontitis, systemic factors, etc. 1. Local irritation of food debris, dental calculus and other irritation gums, causing inflammation. Food debris if accumulated on the edge of the gums for a long time, will breed bacteria, leading to gum infection and swelling and pain. Dental calculus is a hard substance formed by the gradual mineralization of dental plaque. It will continue to stimulate the gums, making them in a chronic inflammatory state and prone to swelling and pain. 2. Periodontitis This is a common periodontal disease that can lead to gum redness, bleeding, pain, and even tooth loosening. Periodontitis is mainly caused by bacteria and their products in dental plaque invading periodontal tissue. When the disease progresses, the gums will appear obvious inflammation and swelling pain. 3. Wisdom tooth pericoronitis If the left wisdom tooth erupts incompletely or impinges, the gum flap around it is easy to form blind pockets, where food residues and bacteria are easy to accumulate. When the body's resistance decreases, it may cause acute inflammation, resulting in gum swelling pain. Wisdom teeth are located in a special position, which makes it easier to clean them. 4. Periapical periodontitis develops from pulp lesions. Bacteria spread through the apical foramen to the tissues around the root tip, causing inflammation and pain, which can be manifested as gingival swelling. Periapical periodontitis can cause increased pressure on the root tip, resulting in pain and swelling of the gums. 5. Systemic factors such as endocrine disorders, decreased immunity, etc. In women's physiological period, pregnancy and other special periods, changes in hormone levels in the body may cause increased inflammation of the gums, swelling and pain. When the body's immunity is low, the resistance to bacteria is weakened, and it is easy to cause gum problems. When there is gum swelling on the left side, you should seek medical attention in time, conduct detailed oral examination and diagnosis, in order to determine the specific cause, and take appropriate treatment measures. At the same time, maintain good oral hygiene habits, such as correct brushing, flossing, etc., to help prevent gum swelling.