氟、镧对牙釉质脱矿和再矿化的影响

Influence of fluoride and lanthanum on demineralization and remineralization of dental enamel

目的 :对氟和镧对牙釉质的脱矿和再矿化进行文献综述 ,探讨氟和镧对于牙釉质脱矿和再矿化的机理。方法 :电子期利文献查阅检索。结果 :氟离子在牙釉质形成以及破坏后牙釉质重组中起重要作用 ;镧可以与牙釉质中的钙发生置换反应生成更耐酸的牙釉质 ,使牙齿外环境中的钙饱和度上升而阻止牙齿脱矿 ,并可促进脱矿釉质再矿化 ,从而提高牙齿的防龋能力。结论 :低浓度氟有利于使脱矿向再矿化方向转化 ,从而使龋齿得以修复。在适宜的PH条件下 ,用含镧的制剂处理牙表面 ,改变了牙釉质的结构 ,提高牙釉质的抗酸能力。

Fluorde and lanthanum play important roles on the demineralization andremineralization of dental enamel whose mechanism has become the important subject in the prevent and treatment of dental caries.Methods∶e-periodical literature searching .Results∶This is the summary which focuses on the influence of fluoride and Lanthanum on the demineralization dnd remineralization of dental enamel.Concluslon∶Lower level fluoride favors the shife from demineralization toremineralization thus making the dental caries repaired.Under suitable pHcondition,treatment of tooths surface with the lanthanum-containing a prescriptionchanged the structure of dental enamel and improved its acid resistance.