Chan K C, Hormati A A, Kerber P E
J Prosthet Dent. 1981 Aug;46(2):175-8. doi: 10.1016/0022-3913(81)90304-8.
The discoloration of enamel caused by food substances was found to be superficial and for dentin and cementum ingressive. Discoloration of cementum exceeded that of dentin, and dentin stained more than enamel. Coffee and soy sauce stained the calcified dental tissues more than the cola beverage and tea. The longer the staining time, the deeper was the discoloration.
研究发现,食物物质导致的牙釉质变色是表面性的,而牙本质和牙骨质的变色是向内的。牙骨质的变色超过牙本质,牙本质的染色比牙釉质更严重。咖啡和酱油对钙化牙组织的染色比可乐饮料和茶更严重。染色时间越长,变色越深。