If you've got all the foreign objects out and the cylinder wall isn't gouged I'd run it. You can do a compression check and a leak down check to see if the rings/or cylinder is damaged. I wouldn't think the rings would be hurt unless there were some ridges in the cylinder. I'm assuming when doing the valve job all guides and seals were checked. I'm trying to think of any future damage that could be done and I can't think of any.