Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Comparison of the number of bacteria in different thicknesses for each group.
| Group | Thickness | P-value |
|---|---|---|
| Er, Cr:YSGG laser | 0.3 | 0.019 ∗ |
| 0.5 | ||
| 1.0 | ||
| 445 nm diode laser | 0.3 | 0.004 ∗ |
| 0.5 | ||
| 1.0 | ||
| Er, Cr:YSGG laser +445 nm diode laser | 0.3 | 0.531 |
| 0.5 | ||
| 1.0 | ||
| Control | 0.3 | 0.212 |
| 0.5 | ||
| 1.0 |
∗Kruskal-Wallis test with a significance level of less than 0.05.
