It was recently noted that there are serious trials to develop dental materials used in the prosthodontics. As a result of this development, some veneering ceramic systems used in metal-ceramic crowns have been appeared. In view of the major importance of marginal fit and its role in the success of restoration it must be a study and evaluation of marginal fit for these modern systems. This research aimed to comparasion of marginal fit for metal ceramic crowns using two types of veneering ceramic.