Table 1: Cephalometric parameters in the twin block group.

Parameters

T1

T2

T2-T1

p

M±σ

M±σ

M±σ

S-N

70,49±3,09

71,64±3,09

1,15±0,56

***

ANS-PNS

58,41±3,64

59,34±4,70

0,93±1,94

*

SNA

82,43±3,19

82,14±3,23

-0,29±1,02

 

A-N perp FH

0,58±2,13

0,62±1,92

0,04±1,09

 

Pg-N perp FH 

-6,88±3,35

-1,88±4,05

5,00±1,42

***

Co-Gn

110,00±8,40

115,70±9,33

5,70±2,49

***

Go-Me

67,92±10,78

70,54±12,20

2,62±2,12

***

SNB

75,54±3,15

76,79±3,24

1,25±1,39

**

SN/GoGn

33,66±3,93

33,79±3,77

0,13±1,59

 

Gonial angle

123,46±3,18

125,54±3,40

2,08±2,62

 

ML/FH

23,71±3,71

24,02±4,45

0,31±2,32

 

SArGo

137,21±5,80

138,46±4,53

1,25±4,25

 

WITS

6,35±2,76

2,33±2,23

-3,99±1,29

***

Co-A

89,19±5,43

91,02±6,29

1,82±2,44

**

Max-Mand diff.

20,83±5,91

24,68±5,57

3,85±2,04

***

ANB

6,45±2,13

4,99±2,30

-1,46±1,01

***

PL/ML

24,88±4,78

23,77±4,74

-1,11±1,81

 

Up. inc.-NA angle 

24,50±5,33

20,46±4,75

-4,04±3,16

***

Up. inc.-NA distance

5,60±1,44

3,88±1,46

-1,72±1,06

***

Low. inc.-NB angle

20,55±5,68

22,19±6,81

1,65±1,80

 

Low. inc.-NB distance

4,09±1,35

5,39±1,02

1,30±1,15

***

Pg-NB distance

3,02±1,04

3,86±1,26

0,84±0,68

***

Holdaway

1,07±2,01

1,37±1,70

0,30±1,60

 

Overjet

8,36±1,63

3,78±0,75

-4,58±1,59

***

Overbite

4,46±1,98

2,31±1,41

-2,15±1,72

**

Okl/SN

15,05±3,41

18,04±4,39

2,99±1,99

***

Alt k/ML

97,11±6,40

96,98±6,28

-0,13±5,04

 

Inter-incisal

118,42±6,96

129,72±7,22

11,30±7,89

***

N-ANS

55,33±4,16

55,75±3,84

1,39±1,35

**

ANS-Me

64,41±6,28

67,46±7,21

3,05±1,41

***

N-Me

115,26±8,97

119,76±9,48

4,5±1,66

***

S-Go

73,28±6,79

76,44±6,89

3,16±1,53

***

Upper lip-E distance 

0,62±2,49

0,75±1,43

0,13±2,10

 

Lower lip-E distance 

0,89±2,52

0,75±1,47

-0,14±2,19

 

Interlabiale

2,37±2,82

0,06±0,05

-2,31±2,82

**

Nasolabial angle

126,08±8,70

131,50±8,95

5,42±5,80

**

Labiomental angle

127,27±14,13

142,90±13,11

15,63±12,72

***

T1: before treatment; T2: after treatment.

*: p<0,05; **: p<0,01; ***: p<0,001.