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Table 2 Average amount of aerosol and splatter at different positions with different settings at 30 cm

From: Precise control of digital dental unit to reduce aerosol and splatter production: new challenges for future epidemics

Distance

Position

Contaminated Spots

10,000 rpm

20,000 rpm

30,000 rpm

40,000 rpm

20% water

30% water

40% water

20% water

30% water

40% water

20% water

30% water

40% water

20% water

30% water

40% water

30 cm

0°

8.9

–

–

14

10.2

22.9

15.3

8.9

136.2

19

14

152

45°

–

–

–

–

6.4

0.0

2.5

–

–

1.0

105.0

58.0

90°

–

–

–

–

1.3

3.8

–

–

5.1

14.0

11.0

54.0

135°

11.5

–

–

–

–

2.5

–

–

2.5

3.0

1.0

2.0

180° = O-FS

25.5

39.5

91.7

38.2

64.9

87.9

58.6

71.3

168.1

43.0

214.0

118.0

225°

15.3

15.3

15.3

7.6

3.8

2.5

36.9

5.1

8.9

32.0

38.0

78.0

270°

1.3

–

–

2.5

10.2

1.3

8.9

11.5

10.2

3.0

14.0

1.0

315°

–

3.8

8.9

2.5

24.2

2.5

29.3

21.6

39.5

29.0

9.0

12.0

A-FS

–

1.3

–

–

–

–

–

1.3

1.3

7.0

42.0

4.0

Mean

6.9

7.5

20.4

7.4

13.4

13.7

16.8

13.6

41.3

16.8

49.8

53.2

St. Dev

9.1

13.0

33.6

12.5

20.7

28.7

20.7

22.7

64.4

15.0

69.2

54.8

  1. O-FS Operator’s Facial Shield, A-FS Assistant’s Facial Shield