Disinfecting the inside of the mouth after a fall means rinsing the wound, using saline, hydrogen peroxide or povidone-iodine to scrub or soak the wound if it is small, and cleaning and suturing the wound as soon as possible if it is large.
For the inner wall of the mouth after a fall often have bacteria, sediment, tissue debris and foreign objects in the wound, need to be cleaned and disinfected as soon as possible.
Use large amounts of saline to clean the tissues around the wound, then rinse the wound under local anesthesia with large amounts of saline and hydrogen peroxide alternately, or you can use a low concentration of iodophor to scrub or soak the wound.
For larger wounds in the mouth after repeated scrubbing of the wound with gauze to disinfect it, the tip of a curette is needed to remove foreign bodies embedded in the tissues to clean the wound, and then sutures are applied to stop bleeding.