Table 2.
Probability that there has been a change in the median particle concentration measured during a procedure relative to baseline. Probabilities were calculated using the Mann-Whitney U test, with values close to 1 indicating a high probability that the dental procedure led to an increase in aerosols within that size range
| Procedure | Number | Duration (mins) | Very small (0.08-0.26 μm) | Small (0.26-0.9 μm) | Medium (0.9-2.6 μm) | Large (2.6-10 μm) |
|---|---|---|---|---|---|---|
| Standard debond | 1 | 11:00 | 0.94 | 0.99 | 0.12 | 0.55 |
| 2 | 11:00 | 0.66 | 0.9 | 0.06 | 0.07 | |
| 3 | 4:00 | 0.83 | 0.67 | 0.89 | 0.87 | |
| Average | - | 0.81 | 0.85 | 0.36 | 0.50 | |
| Debond without air | 1 | 4:10 | 0.72 | 0.97 | 0.98 | 0.48 |
| 2 | 5:00 | 1 | 1 | 1 | 1 | |
| 3 | 4:00 | 0.97 | 1 | 1 | 1 | |
| Average | - | 0.90 | 0.99 | 0.99 | 0.83 | |
| Debond with water | 1 | 9:00 | 0.18 | 1 | 1 | 0.4 |
| 2 | 3:50 | 0.89 | 0.98 | 1 | 1 | |
| Average | - | 0.69 | 0.66 | 0.67 | 0.54 | |
| Debond with fast handpiece | 1 | 20:00 | 0.99 | 0.23 | 0.98 | 1 |
| 2 | 20:00 | 0.73 | 1 | 1 | 0.9 | |
| 3 | 20:00 | 0.1 | 1 | 1 | 0.97 | |
| Average | - | 0.61 | 0.74 | 0.99 | 0.96 |