The “tiger teeth”, as they are commonly called, are professionally known as cuspids and grow in the corners of the mouth. They have strong teeth and long roots, and have a powerful role: they can tear food; they are not easily decayed, and are the “oldest” of the teeth, and are often used to fix dentures after the loss of other teeth in the upper jaw; they can support the corners of the mouth and make the face young, and so on. Nevertheless, cuspids are often treated unjustly by asking to be “extracted and disposed”. Children begin to replace their permanent teeth at the age of 6 to 7 years, and because the cusp is replaced late by the neighboring teeth, its position is often occupied by the early erupting neighboring teeth. When the permanent cusp comes late, it has to be squeezed to the outside of the teeth, known as “tiger teeth”. The child grows “tiger teeth”, temporarily affect the face aesthetics, some parents want to pull it out, but for oral health, do not just pull out the “tiger teeth”. This is because in the development process of children, the jawbone is still growing, as the jawbone grows, in the process of self-adjustment of the teeth, the tiger teeth and the possibility of “return to the team”. Even if the tiger teeth are still in place and do not move, you can go to the orthodontics department for treatment to invite the tiger teeth back to the normal tooth line.