Table 1.
Maximum particulate counts measured for PM1 particle size during each procedure (μg/m3)
| PM1 | Intense three-in-one maximum μg/m3 | Micromotor maximum μg/m3 | Air turbine maximum μg/m3 | Slow speed maximum μg/m3 | Ultrasonic maximum μg/m3 |
|---|---|---|---|---|---|
| Without HVE | 5 | 5 | 6 | 4 | 5 |
| With HVE | 4 | 4 | 6 | 4 | 4 |
| Background | 3-6 | 3-6 | 3-6 | 3-6 | 3-6 |
| % relative reduction above background | Results within background levels | Results within background levels | Results within background levels | Results within background levels | Results within background levels |