A system and method for facilitating content requests while maintaining content restrictions may include a proxy server configured to filter requested content based on specified content restrictions. This invention also provides a dental articulator which is designed to simulate the jaw or condylar movements of a patient. The inboard and outboard track assemblies are mounted to a vehicle structure such that a center track portion remains unsupported. The device may have different modes of operation to yield improved results in different situations. The product mixture is ground, cooked, and conveyed to a drum drier.