Receding gums, also known as gingival recession, is a common dental problem that occurs when the gum tissue pulls back from the tooth, exposing more of the tooth's root. This can create gaps or pockets between the teeth and the gums, which can trap bacteria and lead to tooth decay, gum disease, and other dental problems.

Some common causes of receding gums include:

1. Gum disease: Gum disease is a bacterial infection that can cause the gums to become inflamed and pull away from the teeth.

2. Overbrushing: Brushing too hard or using a toothbrush with hard bristles can damage the gum tissue and cause it to recede.

3. Genetics: Some people are more prone to gum recession due to their genetics.

4. Tobacco use: Smoking or using other tobacco products can increase the risk of gum disease and gum recession.

5. Hormonal changes: Changes in hormone levels, such as those that occur during pregnancy, can make the gums more susceptible to gum disease and recession.

If you have receding gums, your dentist may recommend treatments such as scaling and root planing, gum graft surgery, or other procedures to help repair the gum tissue and prevent further damage. It's also important to practice good oral hygiene at home, including brushing twice a day with a soft-bristled toothbrush, flossing daily, and using an antiseptic mouthwash to help reduce bacteria and promote healthy gum tissue.