Department of Conservative Dentistry, College of Dentistry, Yonsei University, Korea.
Copyright © 2009 The Korean Academy of Conservative Dentistry
Experimental models used in this study
a3M Dental Products, St. Paul, USA
bIvoclar Vivadent, FL-9494-Schaan, Liechtenstein
cKerr, Orange, CA, USA
Mechanical properties of the materials used in the study
a3M Dental Products, St. Paul, USA
bIvoclar Vivadent, FL-9494-Schaan, Liechtenstein
cKerr, Orange, CA, USA