Q. Hi, im thinking of getting the replacement veneers. i had them for 15 yrs now. i was wondering, is it a good thing for a dentist to whiten my teeth (ones that have veneers) before placing the new veneers. some dentist said that it’s a good idea because it would deminish the grayish effect after the veneer is placed. and wont make my teeth very sensitive since it’s been grinded due to veneers?