alginate
an irreversible hydrocolloid material used to obtain impressions of teeth and soft tissues
articulator
device built to resemble the TMJ and human jaw to which casts of the mandibular and maxillary arches may be attached
base metal
metal, such as iron, tin, and zinc, known for its hardness
cast
a positive reproduction of the patient's mouth; three-dimensional representation of the teeth and other tissues of the oral cavity; also called a model
casting
indirect restoration formed by pouring molten material into a previously obtained mold
ceramic casting
restoration made of clay-like material topped by a metallic glaze
distortion
a change in the dimensions of an impression that has already set; also changes that occur during removal of an impression from a patient's mouth
custom tray
an impression tray specially constructed for an individual patient
elastomeric
having a rubbery elastic quality
gypsum
a form of calcium sulfate used in dental plasters, investments, and stone
imbibition
changes in a set alginate impression due to swelling or additional moisture
impression tray
a metal or plastic tray used in obtaining impressions
impression
an imprint or negative reproduction/likeness of the teeth or other tissues of the oral cavity
indirect restoration
a restoration, such as a crown, that is created outside the patient's mouth
investment material
material used to envelope or cover an object during laboratory procedures, such as soldering, curing or casting
lathe, dental
an appliance fitted with attachments for grinding, cutting, and polishing dental materials and appliances
model trimmer
appliance used to trim away excess plaster or dental stone from models or casts
noble metal
metal such as gold, palladium, or platinum, known for resistance to tarnish and etching
plaster
a type of gypsum containing calcium sulfate hemihydrate and porous crystals that is used to make dental casts
polysulfide
synthetic elastic material used to make elastomeric dental impressions
porcelain
a commonly used dental ceramic
polyether
material used to make elastomeric impressions for crowns and bridges
sandblaster
small hand-held instrument used to roughen smooth surfaces for better adhesion
silicone
material used in dentistry to make elastomeric impressions
spatula, mixing
a flat blade used for mixing plaster and other dental materials
spatula, wax
a double-ended flat blade used to shape wax
stock tray
a prefabricated impression tray intended to fit a wide variety of patients
syneresis
changes in a set alginate impression due to dryness and loss of moisture resulting in shrinkage
vacuum former
an appliance used to warm plastic and construct custom trays
vibrator
a platform used to agitate mixes
work pan
a plastic tray used to hold ongoing laboratory work