Tapered dental implant in a stepped orifice

• US 5,795,160 A
• Filed: 02/06/1997
• Issued: 08/18/1998
• Est. Priority Date: 02/06/1997
• Status: Expired due to Term

• Current Assignee: Nobel Biocare USA LLC (Envista Holdings Corporation)
• Original Assignee: Jack A. Hahn, Steven J. Fix
• Inventors: Fix, Steven J., Hahn, Jack A.
• Primary Examiner(s): Wilson, John J.
• Application Number:
  US08/795,875
• Time in Patent Office: 558 Days
• Field of Search: 433/174, 433/173, 433/172, 433/175, 433/176
• US Class Current: 433/174
• CPC Class Codes: A61C 8/0022 Self-screwing A61C8/0028 takes precedence
• CPC Class Codes: A61C 8/0045 with a stepped body
• CPC Class Codes: A61C 8/0089 Implanting tools or instruments

Abstract

A tapered dental implant and a method of installing the same in a stepped orifice are disclosed.

Claims

1. A method of installing a dental implant comprising the steps of:

drilling a stepped endosseous orifice in the maxilla or mandible of the patient in which the implant is to be installed; and

inserting into said orifice a tapered implant, the tapered implant being so constructed and configured as to define a proximal end, a cylindrical portion adjacent to the proximal end, a frustoconically tapered portion tapering from the major diameter D at the proximal end of the implant to a minor diameter d proximate the distal end of the implant;

said orifice being step drilled such that the orifice less than or equal to respective portions of the implant to be installed adjacent such steps for laterally compressing the cancellous tissue to form a tight fitting sleeve of bone around the implant without exerting undue lateral force bone into which implant is installed.

2. The method of claim 1 wherein insertion of the tapered implant comprises screwing the insert into the orifice and wherein the implant additionally comprises a helical thread extending from the cylindrical portion and from the frustoconically tapered portion.

3. The method of claim 2 wherein the helical thread diminishes in depth toward the distal end of the implant.

4. A dental implant constructed and configured to define a proximal end, a cylindrical portion adjacent to the proximal end having a major diameter D, a frustoconically tapered portion tapering to a minor diameter d proximate the distal end of the implant, a single helical thread extending from the cylindrical portion and from the frustoconically tapered portion, said single helical thread diminishing in thread depth from the frustoconically tapered portion toward the distal end of the implant.