In<p>'s life, there is actually no way to prevent tooth yellowing, because the attachment of pigment will cause tooth yellowing. Pigmentation is related to smoking, drinking tea and foods with various pigments. & lt/p & gt； & ltp style = \ " text-align:center \ " & gt； & ltimg src = \ "/uploadfile/image/20191227/157740924850871.png \" title = \ "dental structure diagram \" alt=\. \ "/>； & lt/p & gt； & ltp> can only say that the yellowing of teeth can be delayed in the following two aspects: