Oral disinfection can be done with 75% alcohol, povidone-iodine gargle, povidone-iodine, hydrogen peroxide, etc. You should choose the right disinfectant for the situation. Oral disinfection is usually done with 75% alcohol, povidone-iodine gargle, and povidone-iodine for dental procedures such as extractions and fillings. If there is pus formation, you need to use hydrogen peroxide to disinfect, usually alternating hydrogen peroxide and saline rinse, the effect is better. It is necessary to choose the appropriate disinfectant to disinfect according to the individual situation, such as mouth ulcers, 75% alcohol is prohibited to avoid local irritation. It should be noted that if you are allergic to the above disinfectant, you should not use it to avoid allergic reactions, such as rashes, itchy skin, oral mucosal edema. There are many items used for oral disinfection, according to the individual situation, follow the doctor’s advice to choose a suitable disinfectant.