At a McDonald's store in Kushiro City, Hokkaido, it was revealed that the hamburger he purchased was mixed with something like "human teeth." In September last year, a woman in Kushiro City noticed three fragments of human teeth mixed in when she ate a hamburger she bought at McDonald's Kushiro Kaizuka-dori store at home. The woman who bought the hamburger: "I bit into it and it was squeaking. It was very hard. (Responsibility of the store
In August this year, at a fast-food restaurant in Kanazawa City, the operating company that investigated the problem of foreign matter being mixed in the product revealed that the foreign substance was "a human tooth." On August 2 this year, a male customer who was eating sausage egg muffins at the McDonald's Kanazawa Arimatsu store in Kanazawa City reported to the clerk that the product was contaminated with foreign substances such as teeth or bones. For this reason, when the operating company of this store commissioned an external organization to investigate, it was found that the foreign body was a human tooth.