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CH 47
| 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. |
| 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. |
| dimensionally stable | referring to a dental material that retains its original dimension when subjected to a change in temperature and humidity. |
| homogenous | 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. |