What raw bones are safe for dogs?

I have an italian greyhound who is about 5 years old. I feed her a combination of blue buffalo and innova and I was going to try giving her raw bones to help with keeping her teeth clean. I obviously would be watching her while chewing on these bones and I was just wondering what would be safe for her to chew on. I am not going to feed chicken bones because they splinter too easily. Any help would be great.Thanks!