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用磷酸钙(简称GPP)沉积方法的离体实验测定了氟对CPP的沉积能力、沉积物结构及渗透性的影响,证实CPP能使牙本质小管堵塞故有可能治疗牙本质过敏。 材料和方法 CPP溶液配制:二水合磷酸钙(简称DCPD)溶解于磷酸中,使Ca~(2+)为1mol/L,PO~(3-)_4为3mol/L;处理后液配制:1mol/LNaOH溶液,使其中NaF浓度从0至0.1mol/L。健康人的无龋磨牙移去釉质后切成1.5mm的牙本质片,0.6mol/L的HCl酸蚀1min,蒸馏水洗1min,含CPP溶液的棉花球擦拭牙本
In vitro experiments with calcium phosphate (GPP) deposition method were used to determine the effect of fluoride on CPP deposition, sediment structure and permeability. It was confirmed that CPP can block the dentinal tubules and possibly treat dentin hypersensitivity. MATERIALS AND METHODS Preparation of CPP solution: Calcium phosphate dihydrate (abbreviated as DCPD) was dissolved in phosphoric acid so that Ca 2+ would be 1 mol / L and PO 3+ 4 would be 3 mol / L; / LNaOH solution, in which the NaF concentration from 0 to 0.1 mol / L. Healthy human caries-free molars removed enamel and cut into 1.5mm dentin tablets, 0.6mol / L HCl acid etching 1min, distilled water 1min, cotton balls containing CPP solution wipe the dentin