I was born with beautiful teeth. They're white and they're straight without the help of braces. My dental hygiene regimen borders on neurotic--I floss daily, brush twice a day, use listerine every night, and even wear a nightguard to protect them against nighttime grinding.
The only flaw: they're deeply grooved and therefore prone to cavities. According to my dentist, it's not my fault--the bristles of my toothbrush simply can't fit in these narrow valleys.
Today I went to the dentist for the first time in Taiwan. Apparently I have not one, not two, not three, but SIX CAVITIES! SIX! They're small, and apparently "not [my] fault" but still, six!
At least dental care is covered by our nationalized healthcare. My co-payment today was 100 NTD, or roughly $3 USD. Which is good because they only filled half of the cavities today.