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Table 1 Distribution and percentage of malocclusion according to DAI

From: Malocclusion, dental aesthetic self-perception and quality of life in a 18 to 21 year-old population: a cross section study

MALOCCLUSION

n

%

SEVERITY (DAI)

  

 Normal occlusion or light malocclusion1

75

54.4

 Definite malocclusion2

26

18.8

 Severe malocclusion3

24

17.4

 Very severe malocclusion4

13

9.4

COMPONENTS (DAI)

  

Missing teeth

  

 No missing tooth

134

97.1

 One missing tooth

4

2.9

Crowding

  

 Without crowding

62

45.0

 Crowding in one arch only

46

33.3

 Crowding in both arches

30

21.7

Incisal spaces

  

 No spaces

113

81.9

 Spaces in one arch only

22

15.9

 Spaces in both arches

3

2.2

Incisal diastema

  

 No diastema

120

87.0

 1 to 3 mm

18

13.0

Maxillary misalignment

  

 No misalignment

106

76.9

 1 to 3 mm

30

21.7

 > 3 mm

2

1.4

Mandibular misalignment

  

 No misalignment

72

52.2

 1 to 3 mm

66

47.8

Overjet

  

 0 – 3 mm

111

80.5

 4 – 6 mm

27

19.5

Anterior open bite

  

 No open bite

128

92.9

 1 to 5 mm

10

7.1

Molar relationship

  

 Normal

82

59.4

 Half-cusp deviation

20

14.5

 Full-cusp deviation

36

26.1

TOTAL

138

100.0

  1. 1DAI scores ≤ 25, 2DAI score of 26–30, 3DAI score of 31–35, 4DAI score ≥36.