Groups patients

Group 1: 27 subjects

aged 15 - 27 years

Group 2: 72 subjects

aged 28 - 42 years

Group 3: 129 subjects

aged 43 - 57 years

Group 4: 67 subjects

aged 58 - 75 years

Teeth

Teeth

Teeth

Teeth

Examined (%)*

NCCLs

(%)+

WF

NCCLs (%)§

Examined

(%)*

NCCLs

(%)+

WF

NCCLs (%)§

Examined

(%)*

NCCLs

(%)+

WF

NCCLs (%)§

Examined

(%)*

NCCLs

(%)+

WF

NCCLs (%)§

Maxillary

incisors

105

(11)

2

(2)

0

241

(25)

20

(8)

11

(55)

434

(45)

43

(10)

36

(84)

186

(19)

35 (19)

31

(89)

Mandibular incisors

103

(11)

3

(3)

1

(33)

246

(25)

24

(10)

14

(58)

427

(44)

56

(13)

47

(84)

179

(18)

38 (21)

33

(87)

Maxillary

canines

51

(10)

3

(6)

1

(33)

121

(25)

19

(18)

10 (53)

231

(49)

37

(16)

31

(84)

93

(19)

25 (27)

22

(88)

Mandibular canines

52

(11)

3

(6)

0

123

(24)

22

(18)

13 (59)

227

(46)

31

(14)

26 (81)

91

(19)

21 (23)

17 (81)

Maxillary premolars

102

(10)

2

(2)

0

241

(25)

33

(14)

22 (67)

456

(46)

47

(10)

39 (83)

181

(19)

57 (32)

51 (89)

Mandibular premolars

104

(11)

3

(3)

1

(33)

237

(25)

27

(11)

19 (70)

447

(47)

43

(10)

37 (86)

173

(18)

45 (26)

41 (91)

Maxillary

Molars

95

(10)

0

0

227

(26)

12

(5)

7

(52)

397

(45)

31

(8)

21 (68)

168

(19)

42 (29)

36 (86)

Mandibular molars

98

(11)

2

(2)

0

231

(26)

15

(7)

8

(53)

391

(44)

29

(7)

23 (79)

171

(19)

31 (18)

25 (81)

T Test

p = 0.0002

p = 0.006

p = 0.06

p = 0.20

Total teeth

710

18

3

1667

172

104

3010

317

260

1242

294

256

Median percentage

10.6

3

12.4

25

11.4

58.4

45.8

11

81

18.7

24.4

86.5