Skip to main content

Table 1 Statistical analysis on the results of tests

From: The effect of spatial distances between holes and time delays between bone drillings based on examination of heat accumulation and risk of bone thermal necrosis

Cooling mode

Distance (mm)/time delay (s)

Mean (°C)

Standard deviation

Coefficient of variation

Without cooling

6/0

61.4

2.4

3.9

6/5

60.9

2.6

4.3

6/10

60.4

2.7

4.5

12/0

61.1

2.5

4.1

12/5

59.6

2.8

4.7

12/10

59.2

2.7

4.6

16/0

60.6

2.4

4.0

16/5

60

2.5

4.2

16/10

59.6

2.6

4.4

Cooling with normal saline

6/0

84.2

3.2

3.8

6/5

81.8

2.6

3.2

6/10

78.6

2.8

3.6

12/0

60.3

2.9

4.8

12/5

57.8

2.6

4.5

12/10

55.8

2.5

4.5

16/0

46.9

2.2

4.7

16/5

46.8

2.3

4.8

16/10

46.5

2.3

4.8

Cooling with CO2

6/0

45.2

1.6

3.5

6/5

45.1

1.4

3.1

6/10

45.1

1.4

3.1

12/0

45.1

1.4

3.1

12/5

45

1.5

3.3

12/10

45

1.6

3.6

16/0

45

1.5

3.3

16/5

44.9

1.4

3.1

16/10

44.8

1.6

3.6

  1. Mean is the mean of the maximum temperatures of 7 tests