The Effects of CO₂ Laser with or without Nanohydroxyapatite Paste in the Occlusion of Dentinal Tubules

Table 2

Mean of percentage of dye penetration and standard deviation in each group.

Groups	Mean	Std. deviation
C^a	86.52%	20.10
L−^b	49.39%	43.29
L+^c	16.22%	23.47

Control group.
^bLaser only group.
^cLaser plus nanoparticle hydroxyapatite paste group.