Table IIIA (above) and IIIB (below) The mean and standard deviation of each variable for the Class II, Division 1 samples.

Table IIIA shows  the Class II, Division 1 sample values for Females age 10 and 12; Table IIIB, just below, shows  sample values for  Class II, Division 1  Females age 14,  and Males age 10, 12 and 14.

Variable

Definition

Diagram 
(See Fig 4)

F:10yo

F:12yo

Cranium      
 
Anteroposterior (AP) size

19-Gl

A 1

186.4 ± 6.1 5**

187.6 ± 6.9
Frontal bone thickness at sinus

69-Gl

A 2

10.5 ± 2.1 ***

10.9 ±2.0**
Cranial base      
 
Flexure (angle)

Ba-S-N

A 3

133.1 ± 4.7 *

133.8 ± 4.0*
Total length

Ba-N

A 4

102.9 ± 4.0 5*

105.2 ± 4.1**
Anterior length

S-N

A 5

69.1± 3.0 **

70.1 ± 2.9**
Posterior length

Ba-S

A 6

24.6 ± 2.5

25.3 ± 1.8
Mandible      
 
Overall length

Ar-Gn

B 7

98.2 ± 4.4

99.8 ± 4.3
Ramal height

Ar-Go

B 8

39.8 ± 3.4

41.8 ± 3.1
Corporal length

145-Pog

B 9

77.1 ± 3.7

77.7 ± 3.8
Ramo-corporal angle

Ar-Go-Gn

B 10

128.7 ± 4.5 *

128.3 ± 5.2
Symphyseal height

159-Me

B 11

29.7 ± 2.1

30.8 ± 2.6
AP relationship to sella:      
 
-posterior mandible

Ar-S

D 12

14.6 ± 2.6

15.0 ± 2.1
-anterior mandible (Pog)

S-Pog

D 13

56.7 ± 5.1

57.2 ± 6.4
Vertical relationship to sella:      
 
-posterior mandible

S-Go

D 14

66.9 ± 4.3

69.3 ± 4.0
-anterior mandible

S-Gn

D 15

98.0 ± 5.6

100.0 ± 5.7
AP relationship of Pog to ACB

S-N-Pog

E 16

76.0 ± 3.3 *

75.1 ± 3.5 *
AP relationship of point B to ACB

S-N-B

C 17

74.9 ± 34 ***

74.1 ± 3 I **
Slope in relation to ACB

[S-N] - [Go-Gn]

E 18

34.9 ± 4.5

35.3 ± 5.9
Maxilla      
 
Overall length at the level of:      
 
-orbit

Ptm-Mal

G 19

33.4 ± 2.1

34.4 ± 2.4 **
-palate

Ptm-ANS

G 20

52.4 ± 2.6 *

54.1 ± 2 8 **
-alveolus

Max tub-Pr

G 21

50.9 ± 2.8 ***

52.2.± 3.2 ***
Overall mid-maxilla vertical height

114-121

G 22

45.8 ± 2.7 *

47.5 ± 3.1 *
Palato-alveolar height

Max-121

G 23

13.7 ± 1.6

14.4 ± 2.0
Sella to posterior margin of maxilla

S-Ptm

C 24

18.7 ± 2.1

18.8 ± 2.1
Sella to anterior margin at midface

S-A

C 25

67.0 ± 3.6 **

68.5 ± 3 9***
AP relation of midface to ACB

S-N-A

C 26

80.8 ± 3.8

80.7 ± 3.5
Midfacial convexity

N-A-Pog

E 27

169.9 ± 4.8

168.4 ±5.4***
AP relationship of key ridge to sella

S-Max

C 28

22.4 ± 2.9

41.6 ± 2.6 *
AP rel. of key ridge to post max margin

MaxPNS-Max

G 29

22.4 ± 1.9

23.0± 1.8
Length of anteior moiety of palate

Max-ANS

G 30

29 7 ± 2.2 2 ***

30.6 ± 2.8 *
Slope of palate in relation to ACB

[S-N]-[PNS-A]

E 31

13.5 ± 3.1 ***

14.8 ± 3.1 **
Palato-mandibular plane angle

[PNS-A] - [Go-Gn]

E 32

21.4 ±3.6**

20.5 ± 4.5
Maxilla-mandible      
 
AP alveolar discrepancy

A-N-B lang)

C 33

5.8.± 2.0 ***

6.6 ± 2.2 ***
Magnitude of discrepancy

B-A

C 34

10.1 ± 2.5***

11.1 ± 3.4***

Dentition      
 
Mandible to mandibular molar      
 
-AP relationship to Sella

S-DL6

F 35

27.2 ± 3.8

28.3 ± 3.7
-AP relationship to mid-ramal margin

Mid RmPt-DL6

B 36

39.4 ± 3.1

40.8 ± 3.0
Mandible to Mandibular incisor      
 
-AP relationship to Sella

MidRmPt-L1

B 37

75.3 ± 3.5

76.8 ± 4.5
-Molar/incisor separation

ML6-L1

B 38

26.2 ± 1.9

26.3± 2.4 *
-Inclination

[L1-168] - [Go-Me]

F 39

93.0 ± 6.6

95.4 ± 6.4
Maxilla to Maxillary molar:      
 
-AP relationship to Sella

S-DU6

F 40

29.9 ± 3.2 **

31.7 ± 3.4***
-AP rel to post. max margin

Ptm-DU6

F 41

11.3 ± 2.4 ***

12.9 ± 2.3***
-Vertical height from Sella

S-DCU6

F 42

57.9 ± 3.5

59.9 ± 3.2 *
Maxilla to Maxillary incisor:      
 
-AP relationship to Sella

S-U1

F 43

71.7± 4.9 ***

73.1 ± 49***
-Molar/incisor separation

MU6-U1

E 44

32.3 ± 3.0 ***

32.1 ± 3.0 **
-Inclination in rel to ACB

[Ul-164] - [S-N]

E 45

108.1 ± 8.3***

106.0.±7.5***
Facial depth      
 
Upper

Ar-N

G 46

91.1±3.6***

92.8±4.5**
Middle

MidRmPt-A

G 47

77.2 ± 3.1 ***

78.9 ± 3.9 ***
Lower

145-Pog

G 48

77.1 ± 3.7

77.7± 3.8
Total anterior height

N-Me

G 49

109.2 ± 5.4

112.3± 5.8
Upper anterior height

N-Pr

G 50

64.7 ± 3.1

66.5 ± 3.3
Lower anterior height

Pr-Me

G 51

47.6 ± 3.4 *

48.5± 4.0
Total posterior height

S-Go

G 52

66.9 ± 4.3

69.3 ± 4.0

This sample consists of 6 subgroups: 3 female subgroups (aged 10, 12, and 14) and 3 male subgroups (aged 10. 12, and 14).
The significant values are defined by the following asterisks: *P < .05, **P <.01, ***P< .001.
All letter-number combinations listed under the heading "Diagrams" in column 3 refer to the measurement as shown in the diagrams in Fig 4.

Table IIIB The mean and standard deviation of each variable for the Class II, Division 1 samples.

Table IIIA  above shows  control sample values for Females age 10 and 12; Table IIIB, just below, shows values for  control Females age 14  and Males age 10, 12 and 14.

F: 14 yo

M: 10 yo

M: 12 yo

M: 14 Va

189.3 ± 5.5 *
11.8 ± 2.2 ***

191.6 ± 7.2 ***
12.0 ± 2.2 ***

192.7 ± 6.4 ***
12.7 ± 2.1 ***

195.9 ± 6.3 ***
13.2 ± 2.7 ***

133.4 ± 4.5
106.2 ± 39 *
71.2 ± 2.8 ***
24.5 ± 2.2

132.5 ± 5.3 **
106.9 ± 4.2 ***
71.9 ± 2.8 ***
25.2 ± 2.4 *

132.0 ± 4.8 *
109.2 ± 3.6 ***
72.5 ± 2.7 ***
26.5 ± 2.2 **

131.3 ± 4.5
111.3 ± 3.9 **
73.4 ± 3.4 *
26.8 ± 2.6

103.4 ± 4.7
43.1 ± 4.2
80.7 ± 4.4
127.7 ± 5.9
32.1 ± 1.9

99.9 ± 6.0
41.2 ± 4.0
77.8 ± 5.2
129.2 ± 4.5
31.3 ± 2.4 **

103.0 ± 3.9
43.1 ± 3.2
80.4 ± 3.5
128.4 ± 5.5
32.4 ± 2.3 ***

106.9 ± 4.8
45.5 ± 4.2
83.6 ± 5.0
126.2 ± 5.5 *
34.6 ± 2.5 **

14.6 ± 2.3
61.7 ± 7.0

14.7 ± 2.8
57.3 ± 5.7 *

15.7 ± 2.4
59.7 ± 8.5

16.6 ± 2.7
62.2 ± 7.6

72.1 ± 4.3
102.5 ± 4.5 **
76.3 ± 3.7
75.0 ± 3.6 **
34.8 ± 6.1

70.0 ± 4.9
101.7 ± 5.9
74.8 ± 3 *
73.8 ± 3.7 ***
35.5 ± 4.8

73.5 ± 4.3 *
104.3 ± 7.8
76.2 ± 3.3 *
75.1 ± 3.1 **
34.1 ± 5.6

77.5 ± 4.6
108.2 ± 5.9
77.3 ± 3.8
76.0 ± 3.7 *
32.4 ± 6.0

35.3 ± 2.2 *
55.2 ± 2.7 *
53.0 ± 3.1 **
50.6 ± 2.8 *
15.3 ± 1.8
19.9 ± 1.9 **
70.2 ± 3.9 ***
80.7 ± 3.5
170.8 ± 4.6
43.2 ± 2.9 *
23.2 ± 1.9
31.2 ± 2.4 *
14.4 ± 2.6 **
20.4 ± 5.2

34.4 ± 2.5 ***
53.3 ± 3.0
51.8 ± 3.2 **
48.3 ± 3.1 ***
14.6 ± 1.9 **
19.5 ± 2.1 *
68.3 ± 4.1
79.2 ± 3.7 ***
170.8 ± 4.0 ***
43.0 ± 3.2 **
23.9 ± 2.0 *
29.1 ± 3.0 ***
13.9 ± 3.6***
21.6 ± 4.5 ***

35.3 ± 2.4 **
56.1 ± 2.8 **
53.3 ± 2.9 ***
49.3 ± 2.5 ***
15.6± 1.8 *
19.6 ± 2.1 *
70.3± 3.6 **
81.2 ± 3.6
169.5 ± 4.4
42.5 ± 3.0
23.2 ± 2.1
32.5 ± 2.7 ***
13.1 ±3.1 ***
20.9± 5.2 **

36.6 ± 2.6 *
57.7 ± 2.8 *
55.8 ± 3.5 **
51.9 ± 3.2 *
16.2 ± 1.9**
20.2 ± 3.1
72.5 ± 4.7*
82.3 ± 3.5
169.4 ± 6.1
43.8 ± 4.0
24.3 ± 2.5
33.5 ± 2.7 ***
13.5± 3.4*
18.9 ± 5.2

57 ± 1 9 **
9.5 ± 3.3 **

5.4 ± 1.8
10.6 ± 2.6

6.1 ± 19 **
11.2 ± 3.2 ***

6.3 ± 2.4 ***
10.9 ± 3.7***

31.6 ± 4.4
43.1 ± 3.5

26.9 ± 4.3
39.0 ± 4.1

29.6 ± 6.5
42.2 ± 3.0

32.0 ± 5.6
46.1 ± 5.3

77.9 ± 5.1
25.2 ± 2.7
93.2 ± 7.0

77.3 ± 5.3
27.7 ± 2.1
94.6 ± 7.6

80.1 ± 4.1
27.1 ± 2.2 *
96.6 ± 6.6

82.3 ± 6.6
27.3 ± 2.6 ***
98.0 ± 01.5

34.3±3.7 ***
14.4 ± 2.7 ***
61.9 ± 3.0

3.2 ± 4.0 ***
10.7 ± 2.6 **
59.8 ± 4.0 *

32.5 ± 5.5 **
12.3 ± 2.4 **
63.2 ± 3.7

35.2 ± 6.1*
15.0 ± 5.0*
66.1 ± 3.7

76.4 ± 5.0 ***
32 1 ± 2.6***
109.7 ± 6.7 ***

73.2 ± 5.4 ***
33.1 ± 2.8
107.3 ± 7.8 ***

75.1 ± 4.8 ***
32.8 ±2.6 **
107.4 ± 74 ***

77.3 ± 7.9 *
33.0 ± 3.0 ***
109.4 ± 10.3 ***

 

946 ± 36 ***
79.9 ± 3.7 *
80.7 ± 4.4
115.7 ± 5.2
68.5 ± 3.2
49.6 ± 3.3
72.1 ± 4.3

94.5 ± 4.2 ***
78.7 ± 4.0
77.8 ± 5.2
113.6 ± 6.0 *
66.6 ± 4.0
49.3 ± 3.0
70.0 ± 4.9

96.5 ± 3.7 ***
81.6 ± 3.9 **
811.4 ± 3.5
116.4 ± 5.6 *
68.3 ± 3.3
50.7 ± 3.8 *
73.5 ± 4.3 *

99.0 ± 4.0 *
84.7 ± 4.2 *
84.0 ± 5.0
119.8 ± 6.4
70.6 ± 4.0
52.2 ± 3.8
77.5 ± 4.6