FEFC,
If the wisdom teeth extraction goes off without a hitch (no complications), there is no need to let DoDMERB know.
WP,
If an applicant has a new injury/illness that is more than just a minor issue (sniffles, colds, bumps and bruises are minor), both the service academy and DoDMERB need to be notified.
During my days as a reviewer we'd get inundated with new injuries/illnesses from the service academies in the month proceeding I-day (they tended to hold information until the last moment). It made our job much more difficult, especially when the injury/illness occurred in Dec/Jan, and DoDMERB could have cleared it much earlier with all the information.