Knowing what a dental cavity looks like can help you catch tooth decay early and prevent more serious dental problems. Cavities often start as small white spots on the enamel—an early signal that minerals are being lost. As the decay worsens, the spot may deepen into a brown or black area, forming a visible pit, hole, or shadow on the tooth. Some cavities develop in hidden areas, such... https://www.tremainedental.com/what-does-a-dental-cavity-look-like/