How to deal with post-bleaching tooth sensitivity;get expert tips and advice on preventing and remove stains and natural teeth whitening techniques in this free oral hygiene video. Expert: Dr. Alida Smisek Bio: Dr. Alida Smisek has her own dentistry practice with her husband in Stratford, ON. Dr. Smisek received her Honours B Sc. from the University of Western Ontario in biology, her M Sc. Filmmaker: Melissa Schenk