Essential knowledge: The candidate must be able to demonstrate essential knowledge required to effectively do the task outlined in elements and performance criteria of this unit, manage the task and manage contingencies in the context of the identified work role This includes knowledge of: Applied oral anatomy including: articulation and occlusion dentition - arrangement of the teeth, naming and coding of teeth structures of the oral cavity - hard and soft palate, lateral and posterior borders of the oral cavity, tongue and floor of the mouth teeth - form and function Casting and pickling Factors responsible for casting defects Finishing and polishing Fundamental knowledge of model and die materials including: epoxy die materials gypsum materials including their chemical and physical properties, chemical reaction and the effects of excess water, accelerators and retarders, water-powder ratio, temperature and humidity, hardening solutions manipulation of gypsum materials including the measurement and combination of powder and water, spatulation and pouring of the model Fundamental knowledge of dental casting alloys and solders casting alloys including the properties of alloys, common casting alloys and the biocompatibility of alloys ceramic bonding alloys solders wrought alloys Fundamental knowledge of waxes including: pattern waxes including inlay wax, casting wax, baseplate wax processing waxes including boxing and utility waxes, sticky wax, bite registration wax properties of waxes including melting range, flow, thermal expansion, residual stress wax and plastic pattern techniques Infection control guidelines for the decontamination of completed laboratory work Investing and burnout including: fundamental knowledge of investment materials investing and expansion of the investment burnout Occupational health and safety policies and procedures Soldering techniques Waxing and spruing techniques |