Experimental groups accprding to the level of polishing
| Group | Airborne particle abrasion | Stone bur | Medium polishing bur | High polishing bur | Rouge |
|---|---|---|---|---|---|
| A | ○ | ||||
| S | ○ | ○ | |||
| M | ○ | ○ | ○ | ||
| H | ○ | ○ | ○ | ○ | |
| R | ○ | ○ | ○ | ○ | ○ |
A: Airborne particle abrasion, S: Stone Bur, M: Medium polishing bur, H: High polishing bur, R: Rouge.
