Air polishing
Sodium Bicarbonate Group (n =15 ) Glycine Group (n = 12) Erythritol Group (n = 14)
p*
Before
2.85±0.03 2.85 (2.8-2.89) 2.87±0.05 2.85 (2.82-2.99) 2.85±0.04 2.84 (2.8-2.93)
0.632
After
2.36±0.06 2.37 (2.23-2.44) 2.65±0.05 2.64 (2.56-2.75) 2.66±0.02 2.66 (2.64-2.7)
<0.001
p** 0.001 0.02 0.001