Is Dental Assistaning a more popular career than Dental Hygiene?

Because…I see commercials about becoming dental assistants all day,everyday but i don’t ever see any about dental hygienist.I also can’t find any 2 yr or community colleges that offer dental hygiene in TN.How can it be a growing career if its so hard to find a school to go to for it?

I’d really hope to be a dental hygienist,but I just don’t know about it anymore.It seems too difficult to get into.