My teeth has been something that's bothered me for years, I've tried many whitening toothpastes and had a laser treatment thing but it's made barely any difference at all. My local dentist offers teeth whitening where they make you shields and you take home and do it. I'm debating doing that or just ordering some crest strips, will the dentists route whiten them more? Has anyone got any experience in which they can compare? Also is there a specific type of the crest strips that are best as there seems to be a few different ones.