tray

tray (tra) a flat-surfaced utensil for the conveyance of various objects or material.

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impression tray  a contoured container to hold the material for making an impression of the teeth and associated structures.

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tray,

n a receptacle or device that holds or carries.

tray, acrylic resin,

n a tray made of acrylic resin.

tray, impression,

n a receptacle or device that is used to carry impression material to the oral cavity, confine the material in apposition to the surfaces to be recorded, and control the impression material while it sets to form the impression.

tray, impression, maxillary,

n a tray consisting of a body with a protruding edge and handle used to contain a material (e.g., rubber, hydrocolloid, or alginate) against the palatal tissues for making a mold of the maxillary arch structures.

Triple tray.

tray, triple,

n a tray used to make an impression of a prepared tooth as well as opposing teeth. Such impressions are then used to prepare fixed prostheses and to make a bite registration.