Modulus of Elasticity of Two Ceramic Materials and Stress-Inducing Mechanical Deformation following Fabrication Techniques and Adhesive Cementation Procedures of a Dental Ceramic

Table 1

The mean of the maximum mechanical deflection values (μm) and associated standard deviations for IPS e.max® Press glass-ceramic discs measured after polishing (baseline measurements), after stress relief, after alumina air-particle abrasion, and after resin cement coating at 0, 24, 48, and 168 hrs.

Measurements	Mean of the maximum mechanical deflection (μm ± SD)
After polishing	4.45 ± 0.87
After stress relief	5.65 ± 1.56
After alumina air-particle abrasion	2.08 ± 2.01
After resin cement coating at 0 hr	4.77 ± 1.44
After resin cement coating at 24 hrs	4.82 ± 1.55
After resin cement coating at 48 hrs	4.82 ± 1.86
After resin cement coating at 168 hrs	4.74 ± 1.95