My gray teeth

The uncanny, or is it just weird. Colleague who crosses paths with me on a regular basis doesn't look at me or say hello (even in elevator). Neighbor at the mail box today, whom I hailed twice, who didn't turn his head to look at me, said nothing, and then turned to walk home. While I know the problem is not mine, there is a brief moment each time when the question arises as to my very existence. It's odd and disturbing. Earlier in the day, the dentist told me (out of nowhere) that my ego would have a boost if my teeth were bleached white. Hundreds of dollars without insurance, which would then necessitate--the hygienist said--redoing some fillings, which are colored gray to match my teeth. Not sure that's where my ego kicks up!