I wrote a blog about BLW last August:
Cooking with Mrs Sea Monster: Baby Led Weaning
Aiden started with steamed sweet potatoes and zucchini that were cut into long thin sticks. Once Aiden understood chewing and swallowing, I started giving him whatever we were eating that I thought he could handle. We did alter our menus to be more baby friendly for a while. We have no food allergies on either side of the family, so we weren't worried about allergic reactions. The only food my son has issues with is oranges.
Teeth haven't been an issue. DS didn't have any till 7.5 months and then it was just the two. He only has 6 right now and can eat everything we give him.