Dental impression tray

Details Dental impression tray Dental impression tray

1995-05-23

1997-06-10

Lucchesi, Nicholas D.

Dentistry

Apparatus

Having static product shaping surface

433 38, 433 71, A61C 900

Patent

active

056369859

ABSTRACT:
The modulus of elasticity and yield strength of a rigid core rod are set within predetermined limits as to limit the elastic deformation and prevent plastic deformation of a dental tray during multiple impression taking, bite registration and subsequent handling. The tray is formed with a frame which provides a positive recovery force when it is flexed. The cross section of the core rod may be optimized to further limit deflection in a predetermined plane. Various preferred materials including nonwoven spun-bonded filaments are selected for supporting impression material on the tray while minimizing the likelihood of obstructing a patient's teeth during full occlusion.

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