Table 2. The surface area of contamination regarding the positions and distances from the oral cavity.
| Groups | ||||||
|
HVE (% surface area)*
(n=5) Mean ± SD |
HVE+EOS (% surface area)*
(n=5) Mean ± SD |
|||||
|
Positions/ Distances |
4 O’clock | 6 O’clock | 8 O’clock | 4 O’clock | 6 O’clock | 8 O’clock |
| 20 cm | 1.237±0.251A | 0.413±0.183B | 0.343±0.238BC | 0.842±0.102CD | 0.163±0.079C | 0.103±0.066EC |
| 40 cm | 0 | 0 | 0 | 0 | 0 | 0 |
| 60 cm | 0 | 0 | 0 | 0 | 0 | 0 |
*Two-way ANOVA with multiple comparisons test, significant at the P < 0.05 level, the same letter in the superscript is not significantly different from another. EOS, extra-oral suction; HVE, high-volume evacuator.