What are the early signs of tooth decay?

The early signs of tooth decay include white spots or chalky areas on the enamel, which indicate the loss of minerals from the tooth. As the decay progresses, these spots may darken and turn brown or black. Other early signs include sensitivity to hot, cold, or sweet foods and drinks, as well as mild tooth pain or discomfort when biting or chewing. In some cases, tooth decay may not cause noticeable symptoms until it has advanced, which is why regular dental check-ups are important for early detection and treatment.