The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 05, 2002
Filed:
May. 21, 1998
Stig Hansson, Mölndal, SE;
Astra Aktiebolag, Sodertalje, SE;
Abstract
A dental implant system comprising a fixture ( ) for implantation in bone tissue ( ) of the maxilla or mandible by displacement thereof in a forward direction, the fixture having a forward end, a rearward end ( ), and an outer surface ( ) which extends between the forward and rearward ends and which forwardly of a predetermined position ( ) on the outer surface is adapted for interlocking with bone tissue of the maxilla or mandible; and a superstructure ( ) for mounting on the fixture, the superstructure having a forward end for interfacing with the rearward end of the fixture, the forward end of the superstructure and the rearward end of the fixture each presenting interfacing surfaces for interfacing with one another. The rearward end of the fixture and the forward end of the superstructure are so constructed and dimensioned that a predetermined interfacing surface of the superstructure ( ) is able to interface in the forward direction with a predetermined interfacing surface of the fixture ( ) which is at a level which is disposed forwardly of the predetermined position on the outer surface. A more favourable stress distribution in the bone tissue adjacent the fixture results.