Pulpitis bulging a large abscess is not recommended for patients to puncture it on their own, as it is likely to cause local infection and make treatment more difficult. When pulpitis has progressed to periapical inflammation, the situation of pus pockets at the root tip can be seen, which is not only a manifestation of inflammation in the root canal, but has invaded the alveolar bone outside the root tip. It is important to go to the hospital as soon as possible to receive regular root canal treatment, because only breaking the abscess can not get rid of the cause of the disease, there is still a lot of infected material in the root canal, and soon the pus will increase. The fistula can also be healed by sealing the fistula with some medication. If periapical infection is delayed and not treated, it is likely to lead to loosening and even loss of the tooth.