A professional who forms wax bite blocks and impression trays used by dentist to take impressions of patients' teeth and adjacent portions of jaw, using molding equipment and handtools. Responsibilities include:

• Softens plastic or shellac wafer shaped material, using heated press or gas burner.
• Spreads and shapes wafer over model of preliminary impression to form tray, using flat-bladed molding tool.
• Imbeds metal strip in soft material for convenience in handling.
• Presses soft wax over plaster model of denture to form bite block.
• Trims excess wax from mold and smooths surface, using knife, spatula, and gas burner.
• Immerses mold in water to harden wax.
• Trims and smooths edges and surfaces of trays and bite blocks, using bench lathe equipped with grinding and buffing wheels.
• Rubs finished piece with cotton to obtain lustrous finish.