To see pyramiding in a two dimensional photo, we need a profile shot.
Still, I don't see any pyramiding on your tortoise, and pyramiding is not caused by lack of UV. Metabolic bone disease CAN be caused by lack of UV, so safely get your tortoise some sunshine as much as you can.
Looks like a very minute degree of pyramiding. With sufficient soaking, the pyramiding will be somehow covered with new growth and slowly "disappear" from view.