DEVICE FOR EXTRACTING A DENTAL APPLIANCE

摘要

The invention concerns an instrument for setting a crown (4) or a sealed prosthesis on a natural or prosthetic support by generating a couple of forces between the occlusal surface of the stump (3), and the basal surface of the crown (4). The instrument consists of an indented intermediate portion (C) and a working portion (D), which may constitute an extension of a handle (A), and a tapered intermediate portion (B). When it is inserted in a groove previously performed by the practitioner at a supposed level of the occlusal part of the stump (3) along a plane substantially parallel to the occlusal surface of the crown (4), said working portion (D) enables by a physical action to exert a couple of forces between the respective occlusal surfaces of the stump (3) and the basal surface of the crown (4). The couple of forces being generated substantially in the vertical axis (F) of the tooth or implant, the instrument enables to limit the traumas for the patient, to preserve the support base, to safeguard the prosthesis for future resetting.