Comparative Study on the Effect of Calcium Carbonate and Covarine on the Enamel Structure of Human Teeth (in Vitro Study) | ||
| Egyptian Dental Journal | ||
| Volume 70, Issue 2 - Serial Number 3, April 2024, Pages 1319-1330 PDF (3.24 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/edj.2024.265222.2906 | ||
| Authors | ||
| Momen Mohammed Mahmoud* 1; Marwa Muhammad Abd El Hameed2; Rabab Hassan3 | ||
| 1Instructor, Oral Biology Department, Egyptian Russian University, Cairo, Egypt | ||
| 2Professor, Oral Biology Department, Faculty of Dentistry, Ain Shams University | ||
| 3Associate Professor, Oral Biology Department, Faculty of Dentistry, Ain Shams University, Cairo , Egypt | ||
| Abstract | ||
| Toothpaste is a major preventive to enamel surface. CaCo3 as one of abrasives in bleaching toothpastes has an antibacterial effect. A new optical technique is to use covarine blue in bleaching toothpastes. Objectives: Comparison between CaCo3 and covarine blue toothpastes on enamel structure, minerals content and microhardness. Methodology: 48 human premolars divided into three groups: Group I :16 premolars preserved in distilled water. Group II :16 premolars brushed by CaCo3 gel. Group III :16 premolars brushed by covarine gel. Buccal surface of all premolars was brushed electrically and each group was subdivided into 2 subgroups, one examined after 3 weeks and the other after 7 weeks. Enamel was then assessed by: scanning electron microscope (SEM), energy dispersive x-ray analyzer (EDXA) and microhardness tester. Results: SEM: Obvious precipitation of calcium particles on enamel surface in CaCo3 group. Covarine blue group showed almost the same findings as control group except for few cracks. EDXA: After 3 weeks the highest C/P wt. % was recorded in CaCo3 group and covarine blue group respectively, while there was no difference in Ca % in both groups. After 7 weeks P % was the highest in CaCo3 group. There was no statistical significant difference between all groups regarding weight % of calcium and carbon. Microhardness: CaCo3 group represented an increase in the difference of microhardness from 3 to 7 weeks. Conclusions: CaCo3 toothpaste caused precipitation of calcium particles on tooth surface and increase the microhardness of enamel in comparison to covarine blue. | ||
| Keywords | ||
| Enamel; Calcium carbonate; Covarine blue; Bleaching toothpaste | ||
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