Dental impression tray

Abstract

An impression tray for making impressions of the upper and lower teeth, the impression tray includes a mouthpiece and a handle. Sectional and quadrant impressions may also be made using this impression tray. The mouthpiece including an outer wall, inner wall and a base connected between the outer and inner walls at a bottom thereof. The handle is connected to an outer side of the outer wall at a mid-section thereof. The outer and inner walls each have vertical slits spaced along their length. The vertical slits each have a shoulder within the slit providing an interlock for the impression material displaced through the slits. The base includes a number of ribs on its top, each rib extending between the outer and inner walls and in an alternating arrangement with the slits on the outer and inner walls. Between each adjacent pair of ribs are two holes extending through the base. The base is also attached, on its bottom, to a platform structure. The platform structure provides a flat surface for the impression tray and forms reservoirs around the holes extending through the base. The combination of the ribs on top of the base and the platform structure attached to the bottom of the base provide a rigid structure, thereby producing an impression with a minimal possibility of deformation.

Dependencies are inferred from the claim text.