I Have a Dentist Who Wants to Grind Down my Teeth to Correct my Bite. Is Grinding Necessary?

I am 54, have all of my natural teeth with problems. We are working on a treatment plan for caries and a bite issue for which the consensus agreed upon grinding down the interfering teeth even if to sensitivity (invasive?), plus caps. Somehow the much discussed braces option evaporated. I am requiring 2 implants and 2 restorations or 4 implants. The teeth in question are weak. Does orthodontistry come first or the restoration? Wouldn't braces be preferable to grinding down healthy teeth?