Table 1. Comparison of particle concentrations under drilling the teeth without/with suction conditions.
| Without suction (n = 10) | With suction (n = 10) | P value | |||
|---|---|---|---|---|---|
| Number concentration, particles/m3 | |||||
| PM≥0.5 | 1.83x107 | (1.40x107–2.18x107) | 9.54x106 | (6.29x106–1.57x107) | <0.001 |
| PM10 | 1.41x105 | (1.24x105–1.70x105) | 8.35x104 | (6.32x104–1.30x105) | <0.001 |
| PM2.5 | 1.39x105 | (1.23x105–1.69x105) | 8.32x104 | (6.29x104–1.28x105) | <0.001 |
| PM1 | 1.35x105 | (1.20x105–1.65x105) | 8.18x104 | (6.29x107–1.23x105) | <0.001 |
| Mass concentration, μg/m3 | |||||
| PM≥0.5 | 112.05 | (77.98–132.85) | 44.17 | (26.86–126.42) | 0.050 |
| PM10 | 80.32 | (67.55–114.58) | 25.40 | (21.47–126.56) | 0.109 |
| PM2.5 | 20.48 | (16.59–25.79) | 9.57 | (6.72–26.21) | 0.001 |
| PM1 | 7.87 | (5.94–8.08) | 4.18 | (2.94–7.72) | <0.001 |
Data were presented as median (25–75 percentiles).