Dental implant system

• US 5,071,351 A
• Filed: 06/03/1988
• Issued: 12/10/1991
• Est. Priority Date: 07/02/1986
• Status: Expired due to Term

• Current Assignee: Biomet 3i LLC (Zimvie Incorporated)
• Original Assignee: Collagen Corp. (Abbvie Incorporated)
• Inventors: Jones, Ronald H., Withol, Peter J., Peters, Leland J., Green, Ralph E. Jr.
• Primary Examiner(s): WEHNER, CARY ELLEN
• Application Number:
  US07/205,606
• Time in Patent Office: 1,285 Days
• Field of Search: 433/173, 433/174
• US Class Current: 433/173
• CPC Class Codes: A61C 8/0012 characterised by the material or composition, e.g. ceramics, surface layer, metal alloy use of specific materials A61K6/00
• CPC Class Codes: A61C 8/0048 Connecting the upper structure to the implant, e.g. bridging bars A61C8/0028 takes precedence
• CPC Class Codes: A61L 2/14 Plasma, i.e. ionised gases

Abstract

The dental implant system of the present invention has a decreased surface contact angle and includes a biocompatible titanium implant which has been treated by the plasma cleaning and sterilization process of the present invention.

An implant that has experienced plasma cleaning and sterilizing has improved retentive abilities over traditionally cleaned implants. The surface of the implant is now free of all organic debris, has increased wettability, contacts more bone-forming cells upon placement, and has stronger bonds between the metal surface and the bone-forming liquid cells. As a result, the implant becomes more intimately involved with the surrounding bone and tissue structure.

The implant is comprised of an inert, biocompatible titanium material that is designed of such dimensions and angulations to maximize contact the bone cells and subsequently attach a well-suited mechanical prosthetic system to it.

Claims

1. A biocompatible dental implant system designed to be secured at a recess prepared in the alveolar bone tissue of a patient, said dental implant comprising the following interconnected component parts:

(a) an implant element comprising an upper portion having a cavity therein and a lower portion, the lower portion of which extends into the recess in the alveolar bone, leaving exposed said upper portion;

(b) a solid pillar cylinder comprising an upper and lower portion, the lower portion of which extends into the cavity of the implant element, and the upper portion of which defines a cavity;

(c) means for fixing the lower portion of the pillar cylinder within the cavity of the implant element;

(d) a prosthetic attachment, suitable for resting upon the upper portion of the solid pillar cylinder; and

(e) means for fixing the prosthetic attachment to the cavity in the upper portion of the pillar cylinder;

wherein one or more of said component parts has been treated so as to have a surface contact angle of about 20°

or less.

2. The dental implant system of claim 1, wherein the implant element has been treated so as to have a surface contact angle of approximately 20°

.

3. The dental implant system of claim 1, wherein one or more of the component parts have been treated so as to have a surface contact angle of less than about 10°

.

4. The dental implant system of claim 1, wherein one or more of the component parts have been treated so as to have a surface contact angle of less than about 5°

.

5. The dental implant system of claim 1, wherein said recess is shaped to have an internal architecture directly related to the shape of the implant.

6. The dental implant system of claim 1, wherein the component parts have a surface thoroughly clean of organic and inorganic debris.

7. The dental implant system of claim 1, wherein the component parts are prepared from a biocompatible titanium material.

8. The dental implant system of claim 1, wherein the implant has self-tapping threads along its lower periphery.

9. The dental implant system of claim 8, wherein the implant further has two openings to enhance growth of bone tissue at the lower portion.

10. The dental implant system of claim 9, wherein the implant further has up to four axially extending notches comprising between 15% and 95% of the total length of the implant, thereby enhancing the self-threading action of the threads, and forming a cavity into which the bone tissue can grow and provide an absolutely secure and intimate connection of the implant in the bone tissue.