The tiger tooth is the third tooth in the upper jaw and is located at the corner of the mouth. It plays a vital role in the fullness of the mouth and is not normally removed. Also known as the cuspids, the roots of the tiger teeth are the longest and thickest of all the teeth in the mouth, supporting the corners of the mouth. If the maxillary cuspids are removed, the corners of the mouth will collapse significantly, which will have a greater impact on the face. Cuspids have a six-pronged shape with dagger-like tips, making it easy to pierce and tear food, and are especially suited to foods such as meat, which are used most frequently. In addition, the roots of cuspids are long and secure in the socket, allowing them to be retained in the mouth for a longer period of time and can be used as abutments in restorations. Therefore, the presence of tiger teeth is very important and they are not usually removed. However, if the tiger tooth has serious lesions and cannot be retained, it needs to be treated in a timely manner. Tiger teeth usually erupt at the age of 10-11 years old, sometimes due to insufficient eruption space protruding beyond the dental arch, resembling the teeth in the corner of a tiger’s mouth, so it is called a tiger tooth. It is recommended that after the eruption of tiger teeth, you should brush your teeth in the morning and evening, rinse your mouth after meals, and develop good hygiene habits to maintain good oral hygiene.