One man had an unpleasant surprise when he found human teeth in a hamburger that he bought in a McDonald's from Japan.
The case got controversy McMuffin in the Japanese city of Kanazawa, Ishikawa.
Soon he took the bite of his hamburger when he realized that it contained the interior of his teeth, so the man continued to deliver food to the authorities.
The Health Institute conducted the necessary research on the product and the site.
Spokeswoman McDonald said he could not clarify how teeth would get to the hamburgers, but the necessary measures would be taken to prevent it from happening again.