二英是一类可长期存在的重要痕量环境污染物,性质十分稳定,具有生物蓄积的特点,可长期滞留于土壤、空气、水及生物体内,并随生物链不断浓缩。二英对环境的污染和对人类健康的危害已引起人们的广泛关注和重视。研究证实,环境中二英的污染影响牙齿正常发育,导致牙齿的形态、颜色、结构异常甚至不发育,发育期的牙胚是二英毒性作用的主要靶点之一。 Two British is a long-standing important trace environmental pollutants, the nature is very stable, with the characteristics of bioaccumulation, long-term retention in the soil, air, water and organisms, and with the biological chain of continuous concentration. Two British environmental pollution and human health hazards have caused widespread concern and attention. The study confirmed that environmental pollution caused by two British normal tooth development, resulting in tooth morphology, color, structure or even abnormal development, developmental periodontal tooth germ is one of the main targets of two British toxic effects.