People go to Turkey for dental crowns (as well as hair transplants). The worst cases tend to look like a blazing white slab of tombstone teeth - like a cut-price "Hollywood smile" and even less natural looking. I know someone who had it down and you had to look at him indirectly or be blinded by the dazzle of them.

the original tweet was a British guy saying "American teeth" so idk

Isn’t turkey where people are going for cosmetic surgeries now? Maybe they’re saying they got fake teeth there or something?