If they are wearing normally this should not be an issue.
Natural branches work well. I am not a fan of sand, cement, grit perches. Same as no grit paper on the cage floor.
I think you may find some trim to stop their birds nails from scratching them.
There should be a few pictures around on the net showing over grown nails.
Diet can play a part in keratin growth.
Birds with deformed feet do need their nails clipped all the time as they do not touch anything to wear them down.
I.E Like B.B. in this picture.
B.B. Got her nails clipped every 6 weeks or around that for over a year to get them down to a point where they do not trouble her. When I seized her they were starting to grow back into her flesh.
If you are only thinking to stop scratching then you can use a file to blunt them.
If clipping due over grown then it is best to get the right clippers. Or take the bird in and let a vet do them.
Remember to have quick stop or other clotting agent on hand in case you clip into the quick.