Reason for one tooth to be slightly more yellow than others? (Photo)

Hi from Winnipeg!  Somewhere along the way, your tooth has suffered some form of trauma. This causes the tooth to discolor since more dentin builds up in the tooth and it is not a white color and so it shows. An x ray would show this . The simplest way for you to whiten that tooth is to have the bleaching done internally. It will bring the tooth up a few shades and will blend with your other teeth and may not be so noticeable. You can also have a veneer placed over it to match the shade of your other teeth, which is much more costly. I would start with an x ray and internal bleaching and see what happens!  Good luck and let us hope for one whiter tooth! I think internal whitening is the way to go!

It is likely that the nerve was damaged at some point in your life and the tooth did lay down more dentin or calcified. Your dentist should be able to tell this by looking at an xray of that tooth compared to the others. It doesn't mean it needs a root canal or anything but it may need some internal bleaching or isolated external bleaching to get it whiter