From: Intrapocket application of tea tree oil gel in the treatment of stage 2 periodontitis
 | Tests (n = 15) | Control (n = 15) | U | p |
---|---|---|---|---|
Pockets depth (mm) | Â | Â | Â | Â |
Before | Â | Â | Â | Â |
 Mean ± SD | 5.4 ± 1.1 | 5.5 ± 1.1 | 105.5 | 0.775 |
 Median (Min.–Max.) | 6a (3–6) | 6a (3–6) |  |  |
3Â months | Â | Â | Â | Â |
 Mean ± SD | 3.3 ± 0.6 | 4.3 ± 1.5 | 76.50 | 0.137 |
 Median (Min.–Max.) | 3b (2–4) | 4a (2–6) |  |  |
6Â months | Â | Â | Â | Â |
 Mean ± SD | 1.9 ± 0.9 | 2.6 ± 0.6 | 65.0 | 0.050 |
 Median (Min.–Max.) | 2c (1–3) | 3b (1–3) |  |  |
p0 |  < 0.001* |  < 0.001* |  |  |
 %decrease after 3 m | 34.9 ± 26.4 | 21.3 ± 25.5 | 80.0 | 0.187 |
 Decrease after 6 m | 3.5 ± 1.4 | 2.9 ± 1 | 80.50 | 0.187 |
%decrease after 6 m | 62 ± 22 | 51.6 ± 16.8 | 69.50 | 0.074 |
Clinical attachment level (mm) | Â | Â | Â | Â |
Before | Â | Â | Â | Â |
 Mean ± SD | 3.3 ± 0.5 | 3.4 ± 0.5 | 97.50 | 0.539 |
 Median (Min.–Max.) | 3a (3–4) | 3a (3–4) |  |  |
3Â months | Â | Â | Â | Â |
 Mean ± SD | 1.4 ± 0.5 | 1.7 ± 0.6 | 79.50 | 0.174 |
 Median (Min.–Max.) | 1b (1–2) | 2b (1–3) |  |  |
6Â months | Â | Â | Â | Â |
 Mean ± SD | 0.4 ± 0.5 | 1.2 ± 0.7 | 45.0* | 0.004* |
 Median (Min.–Max.) | 0c (0–1) | 1b (0–2) |  |  |
p0 |  < 0.001* |  < 0.001* |  |  |
%decrease after 3 m | 57.8 ± 12.4 | 48.3 ± 19.5 | 81.0 | 0.202 |
Decrease after 6 m | 2.9 ± 0.6 | 2.2 ± 0.8 | 57.50* | 0.021* |
%decrease after 6 m | 87.8 ± 15.7 | 64.4 ± 19.5 | 43.0* | 0.003* |