الفهرس 
Evaluation of the Antibacterial Efficacy of Two Herbals and their Effect on Dentin Microhardness (A Comparative in vitro Study)
List of ContentsOnly 14 pages are availabe for public view
 |  | from | 90 |  |  |
| | | from | 90 | | |
Abstract
To compare the antibacterial efficacy and the effect on dentin microhardness of turmeric extract, thymus vulgaris oil, sodium hypochlorite and chlorhexdine when used as root canal irrigants. Materials and methods: sixty four permanent mandibular single rooted premolars were classified into 4 groups of 16 teeth each according to the final irrigant used. For the antibacterial test, 11 teeth per group(n=11), and the microhardness test, 5 specimens per group (n=5): group I : 2% Turmeric, group II: 2% Thymus vulgaris oil, group III: 5.25% NaOCl, group IV: 2% CHX. Forty four samples were inoculated with E. faecalis , incubated then chemo-mechanically prepared according to the assigned group, sampled and incubated for 24 hours then colony forming units were counted. Twenty samples were used to create dentine blocks then were kept in airtight containers saturated with 5 ml of each irrigant for 5 minutes. Microhardness test was performed after 24 hrs, 3 days and 7 daysusing Vickers hardness indentation machineResults: the highest antibacterial efficacy against E. facalis was in 2% CHX followed by 5.25% NaOCl, 2% Thymus and finally 2% Turmeric. In microhardness test 2% CHX showed the highest statistically significant value of dentin microhardness, followed by 2% Turmeric, 2% Thymus and finally 5.25% NaOCl. Conclusion: Herbals may serve as alternatives to conventional root canal irrigants as they possess antibacterial properties and cause minimal alterations in dentin microhardness when compared to chemical irrigants