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Table 1 Description of impacted third molars

From: Intentional partial odontectomy—a long-term follow-up study

#

Age

Sex

Site

Pell & Gregory classification

Pederson

difficulty index

Pre-operative status

F/U (mo.)

Complication

AK

HC

RS

IP

1

48

F

#48

IIIC

M

7

+

C

+

118.4

trismus

2

59

M

#38

IIIC

H

8

+

+

C

+

91.5

3

39

M

#48

IIIC

M

7

+

C

+

65.8

4

32

F

#38

IIC

M

6

+

C

+

47.5

Bone fragment

5

32

F

#48

IIIC

V

9

+

C

+

46.8

6

43

F

#38

IIIC

M

7

+

D

+

32.7

pain, trismus

7

49

M

#38

IIIB

V

8

+

+

D

+

33.4

8

25

M

#48

IIIB

H

7

+

D

+

60.2

9

25

M

#38

IIIC

H

8

+

C

+

59.7

  1. Difficulty index 3–4(slightly difficult), 5–6(moderately difficult), 7–10(very difficult)
  2. AK ankylosis, HC hyper-cementosis, RS root shape, IP IAN proximity (≤ 2 mm), M mesio-angular, H horizontal, V vertical, C convergent, D divergent