Q. Hi, i have my own bottom teeth apart from 2 crowns,my top jaw is implants and veneers,i wanted my remaing teeth whitened and the implants &crowns replaced with porcelain to match the newly whitened teeth,i thought whitening should be done first but my dentist has said he will replace teeth on implants and the crowns veneers then whiten my own teeth to match,he suggested 2 shades lighter,i would value your opinion, regards,