消费者在包子中吃出牙齿店主已退款 购买者：妻子一口咬下，吃出牙齿

Group 1 - A consumer found what appeared to be a tooth in a bun purchased from a baozi shop in Xichong County, Sichuan [1] - The shop owner has issued a refund to the consumer after the incident was reported [1] - Local authorities are investigating the matter and have contacted market supervision departments for further inquiry [1] Group 2 - The incident has drawn public attention, particularly due to the video evidence shared online [1] - Employees at a branch of the implicated baozi shop confirmed that a customer had indeed found a tooth in the bun purchased from the main store [1] - The shop owner has not responded to multiple attempts for comment from the media [1]