Pre-made reinforcement device

A reinforcement device for preventing rotation of a tooth crown, the tooth crown being connected to a root-canal-treated tooth having a post-hole with a central hole and two indexing grooves intersecting said central hole at an upper surface extending from said central hole, said device comprising:

• an elongated post with at least one venting-indexing groove defined by said post, said post adapted to be seated within a post-hole of a root-canal-treated tooth;
• a core acting as a retention vehicle for a tooth crown, said core defining a central hole and at least one indexing groove intersecting said central hole, said central hole of said core adapted to fit around said post and said core adapted to receive a prosthetic crown;
• and
• at least one horizontal plane anti-rotational device positioned contiguous with said post and said core and extending from said post substantially to the plane of an outer surface of said core, said anti-rotational device adapted to simultaneously engage an indexing groove of said tooth, said indexing groove of said core and said venting-indexing groove in said post.