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Table 4 Frequency and percentage of occurrence of each root in each of the three scores (R = right, L = left, 6 = first molar, 7 = second molar, 8 = third molar, mb = mesiobuccal root, db = distobuccal root, p = palatal root)

From: Intrusion of maxillary molar roots into the maxillary sinus in a sample of the Egyptian population using cone beam computed tomography

Tooth

Root

Score 1

Score 2

Score 3

Total

Count

%

Count

%

Count

%

R6

Mb

12

54.5

5

22.7

5

22.7

22

Db

11

50

5

22.7

6

27.3

22

P

10

43.5

3

13

10

43.5

23

R7

Mb

7

31.8

2

9.1

13

59.1

22

Db

8

36.4

4

18.2

10

45.4

22

P

9

39.1

3

13

11

47.8

23

R8

Mb

2

14.3

2

14.3

10

71.4

14

Db

4

26.7

3

20

8

53.3

15

P

4

26.7

3

20

8

53.3

15

L6

Mb

7

31.8

6

27.3

9

40.9

22

Db

7

31.8

4

18.2

11

50

22

P

7

31.8

1

4.5

14

63.6

22

L7

Mb

3

13

5

21.7

15

65.2

23

Db

4

17.4

3

13

16

69.6

23

P

8

34.8

3

13

12

52.2

23

L8

Mb

2

15.4

3

23.1

8

61.5

13

Db

3

23.1

4

30.8

6

46.1

13

P

4

30.8

3

23.1

6

46.1

13