Mcdonald japan has apologized to customers and vowed to ensure product safety after objects including a human tooth in a customers French fry apiece of plastic in chocolate sundae and a strip of vinyl 1.5 inches long in a chicken mc nugget mcdonalds Japan said that the Thai plant produced that nugget found to contain vinyl is in Sara Uri and owned by Cargill but Cargill Thailand was not immediately available for comment on Monday mcdonalds resumed sales of all size of French fries for the first time in three weeks