Gum breaks that are caused by contaminated objects carry some risk of tetanus infection and tetanus vaccination is recommended; breaks caused by disease do not require tetanus treatment. Due to the contaminated objects such as knives, wooden swabs, etc. that cause deeper injuries to the gums, compared to skin surface debridement, a large amount of rinsing may not be possible when debriding inside the mouth, and there may be a risk of causing infection with tetanus bacillus, and it is recommended that tetanus vaccination is given after the injury, with attention paid to conducting a skin test prior to the vaccination. Tetanus vaccination is not necessary if the gums are broken due to diseases such as mouth ulcers. After the tetanus vaccination, you should take care to eat a light diet, quit smoking and drinking, and go to the hospital if you have any discomfort such as a rash. It is recommended to go to a specialized medical institution for vaccination.