Tooth decay, also known as caries, [a] is the breakdown of teeth due to acids produced by bacteria. [6] The resulting cavities may be many different colors, from yellow to black. [1] Symptoms may include pain and difficulty eating. [1][2] Complications may include inflammation of the tissue around the tooth, tooth loss and infection or abscess formation. [1][3] Tooth regeneration is an ongoing stem cell–based field of study that aims to find methods to reverse the effects of decay; current ... In this guide, we’ll cover everything you need to know about cavities — from causes and symptoms to treatment options, preventive strategies (including for kids), and costs involved. What Are Cavities? Cavities, also known as dental caries or tooth decay, are permanent holes in your teeth caused by bacterial damage. Cavities, also known as dental caries or tooth decay, are a prevalent dental issue affecting individuals of all ages. Understanding the different types of cavities, their causes, symptoms, and prevention strategies is crucial for maintaining optimal oral health. What is a cavity? A cavity is a hole in a tooth that develops from tooth decay. Cavities form when acids in your mouth wear down (erode) your tooth’s hard outer layer (enamel). Anyone can get a cavity. Proper oral hygiene and regular dental cleanings can prevent cavities.