Table 1. Dental procedures for which aerosol was detected above background.
| Procedure | Number of patients* | Total sampling time for procedure (s) | Time aerosol detected above background (s) | Percentage time aerosol detected above background (%) |
|---|---|---|---|---|
| Ultrasonic scaling | 12 | 12,272 | 1,559 | 12.7 |
| 3-in-1 air only | 35 | 801 | 199 | 24.8 |
| 3-in-1 air + water | 33 | 772 | 581 | 75.3 |
| High speed drilling | 15 | 3,849 | 1,543 | 40.1 |
| Slow speed drilling | 15 | 3,324 | 1,632 | 49.9 |
| Surgical drilling | 9 | 568 | 316 | 55.6 |
* Some procedures were conducted in more than one patient.