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One-piece cast resin dental dowel with visible horizontal index

  • US 5,222,891 A
  • Filed: 12/18/1991
  • Issued: 06/29/1993
  • Est. Priority Date: 12/18/1991
  • Status: Expired due to Fees
First Claim
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1. A one-piece molded non-metallic plastic dental dowel-pin in combination with a tooth die for use in a finally trimmed dental model that was made by a two-pour process, said combination comprisinga tooth die made by a first pour and having an outer periphery and an upper surface, and for use witha base model made by a second pour and having a groove therein, said dowel-pin being adapted to be fixed to said tooth die and to be removably inserted in a bore in said base model;

  • said dowel-pin comprising;

    a fastening end-portion extending in a first direction and adapted to be fixed said tooth die;

    an elongated free end-portion extending in a direction opposite to said first direction and adapted to be removably inserted in said base model; and

    an integral elongated locking-and-indexing arm portion having a first index-segment extending from a junction of said fastening and free end-portions in a transverse direction relative to said first and opposite directions;

    said arm portion matching and being adapted to be received in said groove in said base model when said free end-portion is inserted in said base model;

    said first index-segment having a length which is sufficiently long to extend along said upper surface and outwardly beyond said outer periphery of said tooth die so that, after the dental model has been finally trimmed, an outer tip of said first index-segment is visible in an outer surface of said base model.

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