A study of the demineralization and remineralization on enamel of young permanent teeth

Objective: To study the effect of remineralization of three caries-preparative reagent on artificial demineralization lesion of young permanent teeth enamel caries. Methods: 60 nocaries young premolars were selected from orthodontic teeth extraction and artificial caries lesion were formed with lactic acid gel. Then all speciments were divided into 3 groups, each group had 20 teeth, every tooth was divided into two parts, one part was experimental group, the rest was control group. Experimental group were treated with NaF, fluorid protector and remineralization solution containing trace elements respectively, and the control group were not processed. The hardness of enamel were measured by microhardness detected. Results: Compared with the control group, all the experimental group had significant differences (P0.01), especially the remineralization solution group. Compared with NaF and fluoride protector, the remineralization solution group had significant difference (P0.001), but there was no significant difference between the NaF and fluoride protector(P0.05). Conclusion: The three caries-preparative reagent have remineralization effect on young permanent teeth, especially the remineralization solution containing trace elements.