Table 5 At fixed air-water ratio, average amount of aerosol produced under different handpiece speed was compared
Distance | Air-water coolant | Handpiece speed | Av. Aerosol | p-Value |
|---|---|---|---|---|
30 cm | 20% water | 10,000 rpm 20,000 rpm 30,000 rpm 40,000 rpm | 6.9 7.4 16.8 16.8 | 0.031 |
30% water | 10,000 rpm 20,000 rpm 30,000 rpm 40,000 rpm | 7.5 13.4 13.6 49.8 | 0.033 | |
40% water | 10,000 rpm 20,000 rpm 30,000 rpm 40,000 rpm | 20.4 13.7 41.3 53.2 | 0.020 |