Beautiful white teeth gradually turn black, and children do not want to eat because of toothache. These are the last things parents want to see. How can we stop the baby’s teeth from turning black? The most important thing to prevent the caries is to control the plaque, and frankly speaking, it is to keep the teeth clean. Don’t underestimate the difficulty of keeping teeth clean. On one hand, because children are not particularly strong in brushing their teeth, twenty small baby teeth are not very easy to clean when they are arranged. On the other hand, children have more snacks and drinks and eat more frequently, making them prone to repeated “contamination”. Therefore, parents need to spend a lot of time to develop their children’s interest and ability to brush their teeth. There are no shortcuts in this regard. It is generally accepted that it takes three minutes to thoroughly clean (brush) the teeth of an adult, let alone a child. For teeth that are already black, early and aggressive treatment is recommended.