Skip to main content

Advertisement

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