I have had similar things happen. My teeth are perfect...thanks to many painful years of braces. I find it a little weird when I encounter people with unusually white teeth. It really stands out when one has a maw full of unnaturally glowing Chiclets.I went out with a girl the other day and she confessed to me that I made her self concious about her teeth because mine are "perfect." you'd think having nice teeth would help, right? sure enough it had the opposite effect as she ended up bonding with someone else over their mutual self conciousness I made them feel with my "perfect" teeth
after that I make a concious effort to not show my teeth.