extrinsic staining meaning in English
外源性染色
Examples
- Extrinsic stain , before treatment - the tooth surface was stained by food colour
外在变色治疗前-食物色素沈积在牙齿表面。 - Tooth discolouration can lead to intrinsic or extrinsic stains . intrinsic stains may be caused by tetracycline stain , excessive fluoride intake , pulp degeneration after tooth trauma and the presence of metallic restorative materials such as silver amalgam
外在变色是由于食物中的色素附在牙面上，形成斑渍，只要洗牙便可以清除这类斑渍。内在变色的其中一个原因是在乳齿或恒齿的形成过程中，受到一些药物例如四环素的影响。