Crevicular Alkaline Phosphatase Activity and Rate of Tooth Movement of Female Orthodontic Subjects under Different Continuous Force Applications

Table 4

Comparisons between the measurement of canine movements at 150 gm and 100 gm orthodontic forces using a paired 𝑡-test.

Time	Continuous orthodontic force		𝑃 value
	150 gm	100 gm
(A) Canine movement
Week 1 (W1-W0)	0.48 ± 0.32	0.24 ± 0.14	0.01*
Week 2 (W2-W1)	0.36 ± 0.30	0.25 ± 0.15	0.17
Week 3 (W3-W2)	0.38 ± 0.31	0.36 ± 0.30	0.86
Week 4 (W4-W3)	0.33 ± 0.21	0.39 ± 0.24	0.41
Week 5 (W5-W4)	0.55 ± 0.55	0.33 ± 0.17	0.20
(B) Cumulative canine movement
Week 1	0.48 ± 0.32	0.24 ± 0.14	0.01*
Week 2	0.84 ± 0.36	0.50 ± 0.20	0.01*
Week 3	1.22 ± 0.43	0.85 ± 0.44	0.06
Week 4	1.54 ± 0.37	1.24 ± 0.45	0.13
Week 5	2.10 ± 0.50	1.57 ± 0.44	0.04*

Significance = *𝑃 < 0.05.
Data presented as mean ± standard deviation of canine movement in a week (𝑛 = 12) with unit of mm.