الفهرس 
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Abstract
Dental caries is the most common chronic disease with a pandemic nature. The early carious lesion is known to be reversible in nature and can remineralize when treated with proper preventive and remineralization approach. Fluoride still the ideal remineralizing agent used in arresting carious lesions. Undoubtedly, there is a demand for new agents of remineralization with a capacity to accommodate fluoride, decrease the difference in its remineralizing ability, and effect a complete unification of carious lesions. Among the most hopeful are ginger and rosemary which proved to be effective in decreasing demineralization and increasing remineralization. In the current study 120 first premolars were collected and divided into 6 groups. The herbal extracts were prepared to merge teeth in and the demineralization remineralization cycle start for 3 weeks. The evaluation was done by Vickers micro-hardness test and Environmental Scanning Electron Microscope. The mean differences of Vickers microhardness values revealed that microhardnes numbers of samples treated with ginger and rosemary nearly equal to those treated with sodium fluoride and to the baseline numbers. Ca++ and P++ ions have no statistically significance between ginger, rosemary and sodium fluoride. Teeth were examined at magnification of ×1000 and ×200 with ESEM shows normal enamel prisms’ ends with few surface deposit and no surface enamel roughness. After demineralization showed severe surface roughness of the enamel with no surface deposits. After enamel remineralization by ginger, rosemary and sodium fluoride, it nearly regained its original surface with normal enamel prisms’ ends and no surface roughness for all the treatment groups.