. 2015 Jan 26;45(1):29–37. doi: 10.4041/kjod.2015.45.1.29

Table 4.

Comparisons of the mean COF values for all bracket groups obtained from two-way ANOVA

graphic file with name kjod-45-29-i004.jpg

^*Different letters in the 0.018-inches [in] (A to C) and 0.022-in slot size bracket groups (D and E) indicate statistically significant differences (p < 0.05) between the brackets with the same slot size according to Tukey's honestly significant difference post-hoc test.

COF, Coefficient of friction; ANOVA, analysis of variance; SD, standard deviation.

Refer to Table 1 for the explanation about each product.