Vision is simple. $60 per year prescription check, and go to https://www.zennioptical.com/ for discount glasses. Around Xmas I got two pairs of prescription glasses for less than 100. Normal glasses shop is just rip off.
Dental is at most a discount plan. If you don't pay the dental premium you'll be saving around $1500 a year. My family have dental cleaning covered by our medical plan, and we just put away that $1500 and going to pay for it ourselves. The dental plan is just too much hassel with the estimate etc. A filling cost $200, if I have to get a root canal and crown, so be it. It's expensive but not that expensive.