This has been asked many times but I've never gotten a satisfactory answer. I want to start feeding raw meaty bones for dental care. She already gets about 1/3 raw 2/3 kibble, but I want to focus on things that will keep her teeth in good shape. She particularly has some build-up on her very last two teeth. Brushing keeps it in check but I want it gone, lol. What type of bones with help with this area? If it makes a difference, Sydney weighs 20 pounds and is a fairly light chewer.