Efficacy of Video-Assisted Instruction on Knowledge and Performance of Dental Students in Access Cavity Preparation.

Introduction: The conventional method of teaching endodontics has some drawbacks. Due to the small size of the oral cavity, students cannot closely observe the clinical procedure. Use of new teaching modalities such as the intraoral camera may obviate this problem.

The association between oral lichen planus and hepatitis C virus infection; a report from northeast of iran.

Background: The association between hepatitis C virus (HCV) infection and oral lichen planus (OLP) has been the focus of many studies. Fifteen percent of HCV infections lead to sets of extrahepatic manifestations including lichen planus (LP). The prevalence of HCV is heavily influenced by geographical location.