Effects of Er:YAG Laser on Mineral Content of Sound Dentin in Primary Teeth

Table 2

Mean surface roughness values according to groups (nine tracings per sample).

Groups	Roughness value; (means ± standard deviation)
Group A	0.41 ± 0.2
Group B	1.68 ± 0.3
Group C	1.90 ± 0.2