I live in California and my mom is a Costco member. I am 19 and need to have adult orthodontics. The orthodontic dental office I called said they take Delta Dental but when I go to the Costco website the way it is written it is hard to understand if the plan offer coverages for adult braces. I want to know ahead of time since other websites I been too show the braces coverages for child up to age 19. Confused and do not want to buy something that will not provide the coverages I need.