Correlation between the Rotation of the First Molars and the Severity of Class II Division 1 Malocclusion

Table 4

Mean, standard deviation, and comparison between molar rotation indicators in the four Class II malocclusion groups.

Group	Indicator 1	Indicator 2	Indicator 3
1	12.60 ± 6.17^a	59.96 ± 6.96^c	13.90 ± 4.49^e
2	15.21 ± 5.87^ab	57.62 ± 7.47^cd	15.89 ± 4.58^e
3	16.43 ± 7.51^b	56.71 ± 7.94^cd	15.35 ± 4.22^e
4	16.77 ± 7.05^b	56.05 ± 9.85^d	15.01 ± 4.42^e

Data are presented as the mean ± standard deviation. Indicators 1, 2, and 3 (angle of Henry, angle of Friel, and line of Ricketts, resp.) were compared between the four groups using analysis of variance (ANOVA). Different letters represent significant differences (Tukey’s test).