What must be included in the setup for a study model impression?

In the context of setting up for a study model impression, using a rim locked perforated tray is essential for achieving optimal results. This type of tray is designed to adapt the impression material securely while also allowing for effective mechanical retention of the material during the impression process. The perforations in the tray enhance adhesion by allowing the impression material to flow through them, creating a positive lock that minimizes the risk of separation during removal.

A rim locked design provides an additional benefit by helping to adequately border the impression material, which assists in defining the limits of the impression and ensuring the accuracy of the models produced. This setup is crucial for creating a precise and stable impression that accurately represents the oral structures being captured, which is vital for diagnostic, treatment planning, and fabrication processes related to dental procedures.

While impression material, wax bite registration, and alginate are relevant components involved in impression-taking, they do not provide the structural support and retention that the rim locked perforated tray offers during the impression process, making the tray a critical element in the overall setup.