might be different on Lycomings, but
ROTAX states, that ´engines wines which have had the prop spun for more than 1 turn in reverse direction´ to be inspected for damaged hydraulic valve tappets, which happens if air is ingested into the oil system.
The Lyco´s have also hydraulic valve tappets (except fore some few models) and might also have problems, if air is ingested into the oil circuit.