You can know if you have a cavity by watching for several signs and symptoms, though early cavities may not cause noticeable symptoms. Key indicators include:

• Tooth Sensitivity: Mild to sharp pain or sensitivity when eating or drinking hot, cold, sweet, or acidic foods and beverages. This sensitivity happens because decay thins the enamel and exposes nerves

• Toothache or Pain: Persistent or occasional tooth pain, which may worsen when biting down or applying pressure, can indicate a cavity. Pain may start mild and become severe as decay progresses

• Visible Holes or Pits: You might see or feel small holes or pits in your teeth where decay has occurred. Running your tongue over your teeth can help detect rough or hollow spots

• Discoloration or Stains: White, brown, black, or gray spots or stains on the tooth surface can signal decay. Early cavities may appear as chalky white spots, progressing to darker discolorations as they worsen

• Bad Breath or Bad Taste: Persistent bad breath or a bad taste in your mouth can result from bacteria accumulating in cavities

Because early cavities often have no symptoms, regular dental checkups and X-rays are important to detect decay before it causes pain or visible damage

. If you notice any of these signs or experience tooth pain or sensitivity, it's advisable to see a dentist promptly for diagnosis and treatment to prevent further damage