Dental Research Today is a free monthly online journal that collates and summarizes the latest research about Dental, including details on implants, health, hygiene, cosmetic, dentistry.

Investigation of the electrical properties of some dental composite restorative materials before and after laser exposure.

ElKestawy MA, Saafan SA, Shehata MM, Saafan AM

Department of Physics, Faculty of Education, Suez Canal University, Suez, Egypt.

Some electrical properties, such as piezoelectricity, ac conductivity, dielectric constant and loss tangent of nine commercial types of dental composite restorative materials, have been investigated before and after laser exposure for 3s to study the effect of a probable laser exposure during some surgeries on the electrical properties of these materials. No piezoelectric effect has been found in these materials before and after laser exposure. The materials were found to be good insulators (very poorly conducting materials). The temperature and frequency dependence of ac conductivity, dielectric constant and loss tangent have not shown significant changes in values after laser exposure.

Published 4 September 2006 in Dent Mater, 22(10): 885-95.
Full-text of this article is available online (may require subscription).

© 2004-2008 Dental Research Today. All Rights Reserved.