Lab materials, vocab, teeth #'s, dental materials
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| Bite Registration | A record of how the patient's maxillary and mandibular arches occlude.
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| Cast Model | A gypsum replica of the mouth made from an impression of a patient's mouth.
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| Frenula | Folds of tissue connecting the cheeks and lips to the aveolar mucosa.
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| Hydrophilic | A tendency toward compatibility with water or complete wetting ability.
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| Hydrophobic | A tendency away from water, an aversion to it, and less wetting ability.
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| Imbibition | The process of absorbing water causing swelling.
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| Impression | A negative replica of a persons teeth and oral structures into which dental plaster or stone is placed in order to make an accurate copy or positive replica of a patient's dentition.
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| Polymerization | A chemical process that causes two materials to harden together.
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| Sol | A viscious liquid whose particles become attached to each other, forming a loose mass.
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| Syneresis | The process of contracting and shrinking with time as a result of losing water.
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| Viscosity | The property of a material that causes it to flow or not flow easily.
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| Wettability | The capacity of a material to flow over a surface and capture all irregularities.
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| Anatomic Portion | The portion of the model that includes the teeth and oral structures.
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| Articulator | A Device used to reproduce the patient's jaw movements.
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| Aseptic | Free from contamination by disease producing micro-organisms.
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| Centric occlusion | The position of the mandible when the teeth are biting fully together.
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| Facebow | Part of an articutlator that is used to record the relationship of the maxillary arch to the horizontal axis rotation of the mandible.
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| Gypsum | Material used to create diagnostic cast models of a patient's maxillary or mandibular arch.
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| Lathe | A rotary machine used to grind and contour gypsum cast models.
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| Model Trimmer | Used to trim and contour gypsum cast models.
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| Unit dose concept | Prevents contamination of bulk supplies by dispensing only enough to complete the procedure.
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| Irreversible Hydrocolloid | Alginate; once the chemical change has taken place it can not be reversed to its previous state.
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| Reversible Hydrocolloid | Agar; can pass repeatedly between a highly vicious gel state and a low-viscosity sol state simply through heating and cooling.
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| Stock Impression tray | Trays that are shaped to fit over the average maxillary and mandibular arches.
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| Custom Impression Tray | Constructed on a diagnostic cast model from a preliminary impression and made exclusively for one individual patient.
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| Polysulfide Impression material | The first elastomers; used for removable and fixed prosthodontic impressions.
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| Polyether Impression materials | For use in crown and bridge restorations and bite registrations.
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| Silicone Impression materials | Condensation and addition reaction silicones
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| Vinyl-Polyether Hybrid | Combines the properties of polyether and polysiloxane impression materials.
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| Vaccum Former | The machine softens a sheet of plastic with heat and then pulls it down onto a cast with suction. Used for rapid fabrication of custom mouth trays, mouth guards, splints for temporary crowns, night guards for bruxism, and bleaching.
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| Articulator | Device designed to reproduce movements of a patient's mandibular arch in proper centric occlusion to the maxillary arch.
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| Facebow | Used to record the relationship of the maxillary arch and the horizontal axis rotation of the mandible.
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| Dental Lathe | Rotary machine used during grinding, finishing, and polishing procedures.
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| Vibrator | Used to move dental plaster or stone gypsum products when poring a cast model.
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| Model Trimmer | Used to trim and contour gymsum cast models.
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| Plaster | Used for pouring cast models for prelminary study, diagnostic reasons, to attach casts onto articulators and for general use in the dental lab When strength is not important.
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| Stone | For fabrication of dentures, bleach trays, athletic mouth guards, and temporary crown splints.
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| Die stone | Used to create working casts for fixed protheses and partial dentures. Strongest gypsum product.
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| Visible light cured trays | Available in rope, sheet, or gel form resins that are packaged in opaque containers so that they are not exposed to light which will cause them to set.
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| Baseplate wax | Used to create a spacer over the cast before a custom tray is made. May be used to block out undercuts on cast models for bite reg and simulate the verticale dimension created by the teeth during denture and partial denture fabrication. Pink.
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