A hard tip may alveolar ridge tip or tooth fragments appear at the back end of the gums after wisdom tooth extraction. Wisdom teeth are the last teeth to erupt in the oral cavity and are recommended to be extracted as early as possible due to insufficient space in the jawbone and the occurrence of obstruction, resulting in incomplete eruption and repeated inflammation. Some wisdom teeth require flap and bone removal due to large variation in position or deep embedding, and the teeth need to be divided into pieces before removal, thus resulting in uneven edges of the alveolar ridge after grinding the bone and residual tooth fragments after tooth extraction, which are manifested as hard tips on the surface of the gums, and the overly sharp tips of the alveolar ridge need to be smoothed out and the residual fragments removed cleanly. Some wisdom teeth are difficult to remove and the process is complicated, so it is recommended to go to a regular hospital stomatology department.