Research Article

Effect of Helium Plasma Exposure on Wettability and Shear Bond Strength between the Zirconia Core and Feldspathic Veneering Ceramic: An In Vitro Study

Table 1

Contact angle measurements (in degrees) of experimental groups at different time intervals in the furnace.

(min)ControlZrFCZr/FC

0131.66 ± 9.05128.56 ± 12.56137.25 ± 10.54136.16 ± 11.38
3129.90 ± 8.03129.85 ± 10.55134.63 ± 13.75131.83 ± 9.15
5130.39 ± 9.78132.44 ± 9.94135.04 ± 14.45132.42 ± 10.57
10125.65 ± 6.35129.05 ± 10.39130.50 ± 11.10129.63 ± 10.16
15121.12 ± 7.03127.73 ± 7.36126.73 ± 9.08124.32 ± 8.50
20113.88 ± 9.57121.52 ± 7.34122.98 ± 9.57120.01 ± 9.05
30107.18 ± 10.18112.59 ± 8.41114.74 ± 8.82110.80 ± 10.33
40101.99 ± 12.04108.66 ± 9.89112.97 ± 6.22104.27 ± 11.19
5098.90 ± 11.22104.86 ± 9.63105.04 ± 7.49101.63 ± 11.31
6096.31 ± 11.1699.89 ± 8.4898.95 ± 6.2196.13 ± 11.78
7592.00 ± 8.6093.91 ± 6.4193.30 ± 5.6591.04 ± 9.59
9090.16 ± 8.8991.96 ± 7.5992.08 ± 3.9387.80 ± 5.33
10586.88 ± 6.4188.81 ± 6.6987.19 ± 3.8385.65 ± 6.41
12085.28 ± 6.4786.77 ± 3.8686.59 ± 4.0281.92 ± 7.85

Control: specimens with no surface treatment, Zr: plasma exposure on zirconia, FC: plasma exposure on feldspathic ceramic, Zr/FC: plasma exposure on both zirconia and feldspathic ceramic.