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Maximum particulate counts measured for PM10 particle size during each procedure (μg/m3)
| PM10 | 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 | 15 | 23 | 24 | 16 | 12 |
| With HVE | 9 | 9 | 11 | 7 | 8 |
| Background | 7-10 | 7-10 | 7-10 | 7-10 | 7-10 |
| % relative reduction above background | 100 | 100 | 93 | 100 | 100 |
