Nylabone and Greenies are just two extremely popular brands of dental chews. Also check out party and wedding supply stores for mini bottles which will be reasonably cost. Symptoms of dental problems would be bloody saliva, excessive drooling, broken teeth, inflamed gums, and tartar build-up. http://www.kiccoltd.co.kr/bbs/board.php?bo_table=free&wr_id=896716