Dental impression tray

US6302690A · kind A · utility

Assignee

• ESPE Dental AG · DE

Inventors

• Gerd Brandhorst · Landsberg, DE
• Johann Fetz · Windach, DE
• Ingo Wagner · Herrsching am Ammersee, DE
• Joachim W. Zech · Kaufering, DE

Key dates

• Filing date: Sep 6, 2000
• Grant date: Oct 16, 2001
• Expiry date: Sep 6, 2020

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61C9/0006
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A dental impression tray comprises a mold shell made of synthetic material and having an inner space for receiving the impression material, and a support shell made of metal and surrounding the exterior of the mold shell in order to provide the overall impression tray with the rigidity and dimensional stability required for taking precisely fitting impressions. The support shell may be detachably connected to the mold shell by positive or non-positive engagement. While the mold shell including the impression material is passed on to the technician who will produce a model of the teeth from which the impression was taken and who may subsequently dispose of the mold shell including the impression material, the support shell will remain with the dentist, immediately ready for reuse upon sterilization.