渗透树脂和氟化物处理对早期龋修复及抑制再脱矿作用的体外研究

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Abstract Objective: To evaluate the effect of the infiltration technique with or without fluoride therapy on the microhardness of enamel carious lesions. Methods: Aritificial enamel caries lesions were divided into four groups (n=15), group A, immersed in artificial saliva; group B, daily 0.05% fluoride solution; group C, resin infiltration; group D, resin infiltration + daily 0.05% fluoride solution. The specimens were kept in artificial saliva and evaluated for vickers hardness number (VHN) at four points: before treatment, 4 and 8 weeks after treatment, and demineralization. Results: In group A, the VHN of 4 weeks after treament was higher than before treatment, while there was no difference between 4 weeks and 8 weeks after treament. In group B, the VHN showed no differences between 4 weeks , 8 weeks and demineralization. In group C, compared with demineralization, the VHN of 4 weeks and 8 weeks after treatment were markedly decreased. The Group C had a lower VHN after demineralization than 4 weeks and 8 weeks after treatment. After 4 and 8 weeks treatment, the VHN from group C and D were higher than group A and B,respectively, while there was no difference in VHN between group C and D. Group D showed the highest VHN after demineralization, while group A showed the lowest. Conclusion: The VHN of carious lesions increased with the infiltration of resin with or without fluoride therapy, but the infiltration technique alone had a weaker effect on antidemineralization than the infiltration technique with fluoride therapy.

Received: 15 January 2014

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http://zzs.ujs.edu.cn/xbyxb/EN/ OR http://zzs.ujs.edu.cn/xbyxb/EN/Y2014/V24/I02/149

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