Dental post and bur construction
OwnerPaul R. Chalifouxinventor
Life of this patent
Estimating the term…
Abstract
A dental post is provided comprising a bottom section and a stem with a slot which extends lengthwise through the stem to form a plurality of legs. The legs have wings attached thereto. The wings have cutting surfaces which are used to form indentations in a wall of a tooth bore. Kits are provided comprising the dental post and burs for forming a tooth bore to accomodate the dental post and optionally a core for supporting a tooth crown, a template for forming holes in a tooth and a key for providing support for the core.
Claims35
A dental post for insertion into a bore of a tooth which comprises:
- a bottom section,
- a stem attached to said bottom section having at least one slot extending lengthwise through said stem to form a plurality of spaced apart legs said legs being substantially parallel to each other and being free of a prestress force,
- at least one of said legs having a wing section extending radially from an outside surface of said legs a distance to fit within an indentation in a wall of said bore in the absence of a force on said legs,
- each of said wing sections having cutting surfaces adapted to form indentations in said wall when said dental post is rotated or oscillated in contact with said wall,
- each of said legs having a length such that a free end of said leg extends beyond a top surface of a tooth when inserted into a bore in said tooth,
- and said legs being movable relative to each other when subjected to a compression force at said free ends such that said wings are removed from an indentation in said wall.
A dental post for insertion into a bore of a tooth which comprises:
- a top section
- a stem attached to said top section having at least one slot extending lengthwise through said stem to form a plurality of spaced apart legs, said legs being substantially parallel to each other and being free of a prestressed force,
- at least one of said legs having a wing section extending radially from an outside surface of said legs a distance to fit within an indentation in a wall of said bore in the absence of a force on said legs,
- each of said wing sections having cutting surfaces adapted to form indentations in said wall when said dental post is rotated or oscillated in contact with said wall,
- each of said legs having a length such that said top section extends beyond a top surface of a tooth when inserted into a bore in said tooth,
- and said legs being movable relative to each other when subjected to a compression force at said free ends such that said wings are removed from an indentation in said wall.
Dependencies are inferred from the claim text.