Department of Conservative Dentistry, College of Dentistry, Chosun University, Korea.
Copyright © 2005 Korean Academy of Conservative Dentistry
*: Significantly different at p < 0.05 (χ2 test)
*: Significantly different at p < 0.05 (χ2 test)
○: Correct, ×: Incorrect
*: Significantly different at p < 0.05 (χ2 test)
*: Significantly different at p < 0.05 (χ2 test)
○: Correct, ×: Incorrect