%0 Journal Article %T The effect of Siwak (Salvadora persica) on the color of teeth %A Alaa al-Deen al-Helue %A Mohammad Sultan %J International Journal of Students' Research %D 2011 %I International Journal of Students' Research %R 10.5549/ijsr.1.4.138-140 %X Introduction: Siwak (Salvadora persica) has been used for many years. A lot of studies have been conducted in the past in to evaluate the antibacterial effect of Siwak. This study was done to assess the effect of Siwak (Salvadora persica) on the color of teeth. Methodology: The study consisted of 24 individuals (17 males. 7 females) with a mean age of 23. The subjects were advised to use Siwak 4 times a day for one month. The color of teeth (divided into three parts: cervical, middle and occlusal), Gingival Index, Plaque Index, Gingival Recession and Calculus Index were measured before and after using Siwak. We used a spectrophotometer to measure the color of teeth. Results: There were statistically significant differences in the spectrophotometer values before and after using Siwak (p=0.034, p<0.001, p<0.001 respectively). Conclusion: Siwak improves the color of teeth. Key Words: Salvadora persica, Siwak, Arak, tooth color. %K Salvadora Persica %K Siwak %K Arak %K Tooth Color. %U http://www.ijsronline.com/index.php/IJSR/article/view/131/313