Q. I’m 27 and I have a couple of broken teeth, a few cavities and I’ve noticed some movement in my lower middle teeth. I have whitened my teeth with whitestrips and carbamide peroxide gel (I stupidly used to swish it around my mouth for 15 mins a day) and I think my teeth are severely weakened. I considered getting a crown a few months ago when one tooth broke, but lately have wondered if it would be possible to get crowns on 16+ teeth, some top and bottom (i.e. ones that show), to make them stronger, make them whiter, and possibly straighten them out. Is this viable? I’m wondering whether especially the straightening part is wishful thinking on my part. Thank you in advance for your help.