I feed raw poultry bones to my dogs. They love them and I've never had a problem with them. I do supervise them when they have them though. In fact they just had half a turkey neck and some chicken necks for dinner last night.

I think it is all a matter of comfort level. If you are not comfortable feeding the bones then don't. Personally I am not comfortable with raw pork bones. I don't know why, I'm just uncomfortable with the idea. So my dogs don't get pork bones. I am also uncomfortable with the idea of feeding just raw meat to my dogs, even when adding calcium to the meat because I am afraid that I wouldn't get the ratio right. So if I was worried about the bones I would probably feed them ground. But that's just me. Obviously you do not feel the same and you should do what is in your comfort level.

Grinding the bones won't give the added bonus of clean teeth
I have heard (from someone who has been feeding a raw diet for years, and who I go to when I need advice) that the enzymes in the raw meat actually help clean the teeth as well, even if you grind the bones. I'll try and find out more about that. Of course as has been mentioned recreational chewing bones will help keep the teeth clean.

I hope this helps, and good luck with whatever you decide.