System for fabrication of dental cast post and core using a burn-out post
AssigneeEssential Dental Systems, Inc.
InventorsBrett I. Cohen, Allan S. Deutsch
Life of this patent
Estimating the term…
Abstract
A method and system for preparing a cast post and core in a dental root canal procedure is provided. The method comprises the steps of removing the root canal material from the tooth; cutting out a post-hole in the tooth having a substantially uniform width; cutting out at least one annular tier along the hole; placing a burn-out post having at least one flange into the post-hole so that the flange is seated on the annular tier; applying an acrylic resin onto the tooth and over the burn-out post in order to form a core, and finally removing the core with the burn-out post from the tooth in order to form a casting.
Claims17
A method for preparing a post and core adduct in a dental root canal procedure comprising:
- removing root canal filling material from the tooth;
- cutting out a post-hole in said tooth having a substantially uniform width along the length thereof;
- cutting out at least one annular tier along said hole at a selected axial location;
- placing a burn-out post having at least one flange into said tooth hole such that said at least one flange is seated on said at least one annular tier;
- applying a resin composition onto said tooth and over said burn-out post in order to form a core;
- and
- removing the core with the burn-out post from the tooth in order to form a casting.
A burn-out post used in a dental root canal procedure comprising:
- a shaft adapted to be selectively received inside a post hole formed in a tooth;
- a stem extending from said shaft and adapted for disposition above said tooth;
- a primary flange adapted to be seated on a primary tier formed along said post hole and a secondary flange adapted to be seated on a secondary tier formed along said post hole, said primary and secondary flanges being located between said shaft and said stem.
A system for preparing a core and post adduct in a dental root canal procedure comprising:
- a countersink drill bit having at least one head and adapted to be used in cutting out a post-hole having at least one tier in a tooth;
- a burn-out post comprising a depending shaft and an extending stem and at least one flange located between said shaft and said stem with a diameter larger than the diameter of the shaft, said post adapted to be received in said cut-out post-hole with said at least one flange seated along said at least one tier;
- and
- a resin composition suitable for application to said burn-out post when received in said post-hole in order to form a post and core adduct.
Dependencies are inferred from the claim text.