Presentation of a new multifunctional oral cavity simulator: the "MOCS".

This article describes a new multifunctional oral cavity simulator (MOCS) that allows, with little technical support and easy handling, the laboratory development of dental hard tissue lesions under clinically similar conditions. The MOCS consists of a heating unit containing three independent cylindrical chambers with three specimen holders inside. Liquids flow through the surfaces of specimens by inlets on the lid of the chamber, which is connected to a medium/artificial saliva source through a computer-controlled peristaltic pump.