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Chapter 47 Terms
| Question | Answer |
|---|---|
| Anatomic Portion | Structural portion of a dental model created from the alginate impression |
| Articulator | Dental laboratory device that simulates the movement of the mandible and temporomandibular joint when the dental cast is attached to it |
| Die | Accurate replica of the prepared portion of a tooth used in the laboratory for the fabrication of a cast restoration |
| Dihydrate | Related to gypsum products, indicating two parts of water to one part of calcium sulfate |
| Dimensionally Stable | Referring to a dental material that retains its original dimension when subjected to a change in temperature and humidity |
| Face Bow | Portion of articulator used to transfer the relationship of the maxillary arch and temporomandibular joint to a dental cast |
| Gypsum | Chemically known as calcium sulfate dihydrate; a mineral used in the formation of plaster of Paris and dental stone |
| Hemihydrate | When gypsum is heated, it loses water and converts to calcium sulfate, forming the powder product of gypsum |
| Homogenous / Homogeneous | Having a uniform quality and consistency throughout |
| Lathe | Dental laboratory machine with various cutting instruments, grinding stone, and polishing wheels used for dental appliances |
| Model | Replica of the maxillary and mandibular arches made from an impression |
| Monomer | Molecule that, when combined with other molecules, forms a polymer |
| Nuclei Crystallization | Chemical process in the setting of dental stone and plaster in which a cluster of crystals interlink, giving strength and rigidity |
| Polymer | Chemical compound consisting of like units bonded together |
| Slurry | Mixture of gypsum and water used in the finishing of models |
| Volatile | Substance that can evaporate easily and is very explosive |