How do I know I have tooth decay?

How do I know I have tooth decay? How do I know that I have tooth decay under the protection of the question? The answer is a dentist to discover caries during routine teeth examination. The surface of your teeth is soft as the dentist examines it with his device. X -Rays can also reveal tooth decay before it becomes visible. In the advanced stages of tooth decay, you may experience pain in the teeth, especially after eating sweet, hot or soft drinks. Other signs of tooth decay are holes or clearly visible in the teeth.