Research Article
Teeth Whitening and Antibacterial Effects of Juglans regia Bark: A Preliminary Study
Table 5
Teeth brushed with extract solution versus control groups.
| | Tested groups | Lightness | Hue | Chroma | ADA bleaching guide | | Before | After | T-test | value | Before | After | T-test | value | Before | After | T-test | value | Before | After | T-test | value | | Mean ± SD | Mean ± SD | Mean ± SD | Mean ± SD | Mean ± SD | Mean ± SD | Mean ± SD | Mean ± SD |
| | Teeth brushed with extract solution (N = 15) | 1.25 ± 0.76 | 0.35 ± 2.11 | 1.63 | >0.05 | 0.69 ± 0.90 | 1.37 ± 3.23 | −0.87 | >0.05 | −1.20 ± 1.09 | 3.02 ± 2.94 | 2.36 | <0.04 | 23.33 ± 3.64 | 14.88 ± 7.71 | 4.26 | <0.04 |
| | Teeth brushed with saline solution (N = 8) | 0.70 ± 0.94 | 1.56 ± 0.97 | −1.79 | >0.05 | 1.26 ± 1.27 | 3.78 ± 2.79 | −1.98 | >0.05 | −2.00 ± 1.65 | −3.82 ± 0.84 | 1.76 | >0.05 | 20.80 ± 4.37 | 17.80 ± 6.42 | 0.98 | >0.05 |
| | Teeth stored in saline only (N = 7) | 1.73 ± 1.06 | 1.63 ± 0.93 | 1.00 | >0.05 | 2.07 ± 1.27 | 0.47 ± 0.32 | 1.96 | >0.05 | 1.53 ± 0.23 | −1.37 ± 0.40 | −1.39 | >0.05 | 27.33 ± 2.89 | 25.00 ± 1.37 | 3.50 | >0.05 |
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Significant difference at |
