Darkened teeth in children can be dealt with by brushing and restorative dentistry. Teeth darkening is mostly caused by external causes of pigmentation, such as eating heavily pigmented food, dental caries and other factors. 1. Tooth brushing: If it is a temporary pigmentation on the surface, such as eating dark chocolate with heavy color, or some food with pigment, which leads to temporary pigmentation on the surface of the teeth, and there is a darkening of the teeth, it can be removed by tooth brushing. 2. Stomatological restoration: If you don’t pay attention to oral hygiene in daily life, or love to eat sweets, children are prone to dental caries. Early will show the surface of the groove point or line blackening, and later will form caries holes. Caries should be promptly removed, rinsed, disinfected, wet, blow-dried, cavity filling repair treatment. Children with blackened teeth need to develop good oral hygiene habits. Avoid going to sleep with a bottle or bottle-feeding for too long, develop the habit of rinsing the mouth after meals, and drink less sugary drinks. Children with blackened teeth need to identify the specific cause in time, under the guidance of the doctor for symptomatic treatment.