By using a base unit and shells when creating a plaster model, you will achieve a uniform shape and height of the jaw models. The plastic pedestal molds are adapted to the anatomical features of the upper and lower jaw and conform to the international standard. These base trays can also be used to base impressions of larger adult jaws in periodontics and orthodontics. In addition, you can use jaw model trays to store the models and appliances and arrange them individually using the color markings provided.