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Maximum particulate counts measured for PM2.5 particle size during each procedure (μg/m3)
| PM2.5 | 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 | 8 | 11 | 10 | 10 | 8 |
| With HVE | 6 | 6 | 9 | 5 | 6 |
| Background | 6-8 | 6-8 | 6-8 | 6-8 | 6-8 |
| % relative reduction above background | Results within background levels | 100 | 100 | 100 | Results within background levels |
