What does black tooth stone fall to indicate

Black dental calculus indicates that there is a lot of dental calculus on the tooth surface and it is necessary to clean the tooth early. Dental calculus is mainly caused by the mineralization of dental plaque, which is a bacterial biofilm containing a large number of bacteria, intercellular material, and exfoliated epithelial cells and food debris. Dental plaque can generally be removed by timely and effective brushing, but if you don't brush your teeth on time or brush your teeth incorrectly, it is likely to cause plaque that should be removed to remain on the tooth surface. Mineralization will occur over time to form dental calculus. After dental calculus is formed, it will firmly adhere to the tooth surface. When dental calculus accumulates more and more, the outermost layer of dental calculus is likely to show shedding.