Method of providing a patient-specific dental fixture-mating arrangement
AssigneeAstra Tech AB
InventorsJOHAN HOLMSTROM, Mattias Dahlstrom, Mats Wendel
Life of this patent
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Abstract
The present invention relates to a method of providing a patient-specific dental fixture-mating arrangement, such as a dental abutment. According to the method, an arrangement is provided which can only be arranged in one rotational position with respect to a fixture in the jawbone of a patient. The arrangement is designed based on the orientation and inclination of the fixture relative to the jawbone. The invention also relates to a dental implant arrangement, comprising a dental fixture and a final dental restoration having mating indexing means.
Claims14
A method of providing a patient-specific dental fixture-mating arrangement, the method comprising the step of:
- determining, for an implantation site at the maxilla or mandible in which a dental fixture having first indexing means has been or will be inserted, an inclination of the fixture relative to the jawbone and the rotational orientation of said first indexing means relative to the jawbone,
- determining, based on the determined inclination of the fixture and rotational orientation of said first indexing means, a shape of a first portion of a dental fixture-mating arrangement and the rotational orientation of said first portion relative to the fixture,
- providing a dental fixture-mating arrangement which comprises
- a fixture engaging second portion having second indexing means which can only mate with said first indexing means in one rotational position of the second portion relative to the fixture, and
- a first portion having said determined shape and being in such a rotational position relative to said second indexing means so that said determined rotational orientation of the first portion is obtained when the fixture engaging second portion of the dental fixture-mating arrangement is connected to the dental fixture.
A dental implant arrangement, comprising a dental fixture for insertion into a jawbone, the fixture having first indexing means, and a final dental restoration having second indexing means which can only mate with said first indexing means in one rotational position of the final restoration relative to the fixture.
A method of providing a patient-specific dental fixture-mating arrangement, the method comprising the steps of:
- inserting a dental fixture having first indexing means into a maxilla or mandible, determining, before, during or after said insertion of the dental fixture, an inclination of the fixture relative to the jawbone and the rotational orientation of said first indexing means relative to the jawbone,
- determining, based on the determined inclination of the fixture and rotational orientation of said first indexing means, a shape of a first portion of a dental fixture-mating arrangement and the rotational orientation of the first portion relative to the fixture, and
- providing a dental fixture-mating arrangement which comprises
- a fixture engaging second portion having second indexing means which can only mate with said first indexing means in one rotational position of the second portion relative to the fixture, and
- a first portion having said determined shape and being in such a rotational position relative to said second indexing means so that said determined rotational orientation of the first portion is obtained when the second portion of the dental fixture-mating arrangement is connected to the dental fixture.
Dependencies are inferred from the claim text.