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US 7,125,253 B2Granted
Dental implant system and method
OwnerAkira Kitamura, Ryoji Kitamurainventors
Life of this patent
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Abstract
A dental implant system and method are provided. The dental implant method may include forming a hole in bone of an alveolar of a maxilla, adjacent a sinus cavity. The hole is typically formed so as to leave a bridge portion separating the hole from a bottom surface of a sinus cavity wall. The method may further include separating the bridge portion from the sinus cavity wall, and lifting the bridge portion and the sinus membrane together at least partially into the sinus cavity.
Claims21
A dental implant method, comprising:
- forming a hole in an alveolar bone of a maxilla, adjacent a sinus cavity having a sinus membrane lining the sinus cavity, the hole being fanned so as to leave a bridge portion separating the hole from a bottom surface of a sinus cavity wall;
- separating the bridge portion from the sinus cavity wall to form an overhang portion along a side of the hole, adjacent an upper opening of the hole;
- and
- lifting the bridge portion and the sinus membrane together at least partially into the sinus cavity, to raise the bridge portion a first predetermined lift distance into the sinus cavity;
- wherein the step of lifting the first predetermined lift distance is performed by a first lifting device that includes a shaft having a lip and a lifting portion of a first height;
- wherein the lip is step-shaped and the overhang portion is formed to be complementarily step-shaped;
- and
- wherein as the first lifting device is inserted into the hole, ingress of the first lifting device is stopped by contact between the step-shaped overhang portion of the hole and the step-shaped lip of the first lifting device, to thereby position the bridge portion at the first predetermined lift distance into the sinus cavity.
5 more elements
A dental implant method, comprising:
- drilling a hole in maxillary alveolar bone;
- forming a bridge portion intermediate the hole and a lower surface of a sinus cavity;
- scoring the bridge portion, so as to create a score inward of a wall of the hole;
- lifting the bridge portion a predetermined distance into the sinus cavity to thereby detach the bridge portion from the bone along the score, to raise a sinus membrane of the sinus cavity together at least partially into the sinus cavity, and to form an overhang portion along a side of the hole outward of the score;
- separating the sinus membrane from a wall of the sinus cavity, to thereby create a gap therebetween;
- placing elevator material into the gap;
- and
- inserting an implant into the hole, such tat an inward end of the implant extends into the gap with the elevator material placed therein, and is surrounded by the elevator material;
- wherein the step of lifting the bridge portion a predetermined distance is performed by a lifting device that includes a shaft having a lip and a lifting portion of a first height;
- wherein the lip is step-shaped and the overhang portion is formed to be complementarily step-shaped;
- and
- wherein ingress of the lifting device is stopped by contact between the step-shaped overhang portion of the hole and the step-shaped lip of the lifting device, to thereby position the bridge portion at the predetermined lift distance into the sinus cavity.
9 more elements
A dental implant method, comprising:
- forming a hole in an alveolar bone of a maxilla, adjacent a sinus cavity having a sinus membrane lining the sinus cavity, the hole being formed so as to leave a bridge portion separating the hole from a bottom surface of a sinus cavity wall;
- separating the bridge portion from the sinus cavity wall to form an overhang portion along a side of the hole;
- and
- lifting the bridge portion and the sinus membrane together at least partially into the sinus cavity, to raise the bridge portion a first predetermined lift distance into the sinus cavity;
- separating the sinus membrane from the sinus cavity wall;
- and
- further lifting the bridge portion a second predetermined lift distance within the sinus cavity;
- wherein the step of lifting the first predetermined lift distance is performed by a first lifting device tat includes a shaft having a lip and a lifting portion of a first height;
- wherein the step of lifting to the second predetermined height is performed by a second lifting device that includes a shaft having a lip and a lifting portion of a second height higher than the first height;
- wherein as the first lifting device is inserted into the hole, ingress of the first lifting device is stopped by contact between the overhang portion of the hole and the lip of the first lifting device, to thereby position the bridge portion at the first predetermined lift distance into the sinus cavity;
- and
- wherein is the second lifting device is inserted into the hole, ingress of the second lifting device is stopped by contact between the overhang portion of the hole and the lip of the second lifting device, to thereby position the bridge portion at the second predetermined lift distance into the sinus cavity.
9 more elements
Dependencies are inferred from the claim text.