Hi. I am fifty five years old and my teeth are well looked after, and quite white with the bleaching that I have done every five years with my dentist. The problem is that my bottom teeth are quite worn down, i may grind them in my sleep. I have started to wear the cover that were for the bleaching to stop me from doing this. What do yiou think is the best option for me. Either to have crowns on them all, which II understand to be very very strong these days. Or for veneers, but are they as good, or as long lasting.