Children brush their teeth every day, and there are still black objects on their teeth that cannot be brushed off, which is very unattractive. At this moment, Baoma needs to be careful. Dr. Guan Xiaoju from the Facial Health Department of Tianjin Women and Children's Health Center stated that dental caries and pigmentation are common causes of "black" teeth in babies. If this situation occurs, take the child to see a dentist in a timely manner. Guan Xiaoju said that dental caries is the most harmful factor causing tooth discoloration, sometimes accompanied by pain. The root cause of dental caries is Dental plaque. Tooth failure to brush clean and frequent consumption of sugary food and drinks are all risk factors for dental caries. If you have decayed teeth, go to the dentist early. If the caries cavity is shallow, it can be filled with teeth. If the caries cavity is deep, root canal treatment is needed. If the caries cavity has reached an irreparable level, the tooth can only be extracted. Another reason for teeth turning black is the deposition of pigments on the surface of teeth. This is related to the composition of the oral microbiota, saliva composition, and frequency of consuming pigmented foods or beverages of the individual baby. Pigmented areas are often areas where babies do not brush their teeth properly, such as areas near the gums or between teeth. Poor cleaning of these areas can quickly lead to the appearance of pigmentation. Although these pigments do not affect normal chewing function, they greatly affect the appearance of teeth, which in turn affects the baby's normal social and even mental health. If there is more pigmentation and daily tooth brushing cannot be improved, it is recommended to take the baby to the hospital for Teeth cleaning. Parents should be reminded that before the age of 8, their children need parents to help them brush their teeth. Even if the baby brushes their teeth themselves, parents need to check and help them brush again if necessary. Guan Xiaoju said that many mothers confuse "pigmentation" with "dental caries", and it is difficult to determine whether a child's small teeth have a "small black/yellow spot", which is actually pigmentation or dental caries. Caries is generally because Dental plaque on the teeth decomposes acidic substances that "corrode" the teeth, and in serious cases, "caries holes" can be seen by the naked eye. So, when determining whether it is dental caries, you can use a toothpick to gently "draw" on the black/yellow dots. If it slides freely without resistance, it indicates that the surface of the tooth is smooth and may not be dental caries. On the contrary, if the surface is pitted and cannot slide freely, it is likely to be dental caries. Of course, this is just a rough judgment method at home. If parents find that their baby's teeth have "black" or other problems, they must go to the hospital as soon as possible to see a dentist for confirmation. Correspondent Yang Zaoxiao