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US 4,872,840 AGranted
Dental implant and method
AssigneeTeam, Inc.
InventorJacques E. F. Bori
Life of this patent
Estimating the term…
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AssigneeTeam, Inc.
InventorJacques E. F. Bori
Estimating the term…
A pure titanium implant having tightly captured bone therethrough is provided to dramatically reduce the nuturing period prior to the time that an implant may be utilized, by providing osteointegration or bone growth guided through the implant, in addition to any osseointegration or bone to titanium adhesion. In one embodiment, rings of compacted lyophylised or freeze-dried bone are secured between dove tailed, pure-titanium rings to a central implant shaft to guide bone growth through the implant from one side to the other for improved implant anchoring, without infection or rejection. In another embodiment, the implant includes a pure-titanium body having lateral channels completely through the implant, with bone rigidly secured in the channels to guide bone growth completely through the implant. In a method for implanting, rather than drilling a large hole with a slow-speed drill, a series of small drilled holes create, via osteoclasia, a softened-bone structure into which the implant is forced below bone level after a cavity is prepared by removal of a small amount of softened bone at the implant site. The implant is to be inserted into softened bone structure after two to three weeks and before well advanced mineralization, which occures after one to two months. Upon insertion, the implant is covered with the full thickness flap of gingiva, and the flap is sutured over the implant. A healing period of one to one and a half months secures the implant into position via osteoclasia, osteogenesis, and incipient osseointegration. The site is then reopened and a clinical crown or abutment is fixed to the submerged implant, followed by the placement of a ring of semiporous material to prevent epithelial downgrowth at the submerged implant which interferes with osseointegration. In one embodiment, an implant is provided with a bulbous bottom end for stress relief during insertion and during use. In another embodiment, the implant is dismantleable after removal, to permit the microscopic observation of the healing process. A specialized pulling tool is provided to permit the removal of the superstructure from the abutment for prosthetic purposes. A further pulling device for implant removal includes the replacement of the abutment with a bolt-type crown which permits clamping to the implant and twisting of the submerged portion to remove the tightly secured implant.
A dental implant having a shaft and a bulbous end attached thereto, with the bulbous end having a diameter greater than the remainder of the shaft to which it is attached, said implant having tightly captured bone channelled substantially through the implant, a portion of said bone being exposed at a surface of said implant for stimulating osteointegration through the guiding of new bone growth into said implant so as to provide more than surface attachment to said implant, said implant providing a mechanical anchoring via bone growth through said implant.
A dental implant having tightly captured bone channelled substantially through the implant, a portion of said bone being exposed at a surface of said implant for stimulating osteointegration through the guiding of new bone growth into said implant so as to provide more than surface attachment to said implant, said implant providing a mechanical anchoring via bone growth through said implant, said implant including a head portion and a central threaded portion, with intermediate titanium portion secured to said central threaded portion, said titanium implant having a bulbous bottom portion with said bone being captured inbetween said intermediate portions and said head portion and inbetween the lowest. Intermediate portion and said bottom bulbous portion.
Apparatus for decoupling a cap from an abutment attached to a dental implant comprising:
A method for securing implants within a mandibular or maxillary bone, comprising the steps of
In a method of stabilization of an implant which has been inserted into a maxillary or mandibular bone, the step of placing a flap of material over the implant such that the material surrounds the implant for retarding epithelial downgrowth, said material permitting air flow therethrough, said material being placed at the top portion of the implant and overlying the surrounding bone area, said material retarding epithelial downgrowth by providing a lateral path for epithelialization prior to downgrowth, thus to prevent downgrowth for a predetermined period of time based upon the distance between the implant and the outer edge of said material.
A method for providing an improved stabilized dental implant comprising the steps of:
The method of claim 31 wherein said dental implant is secured to the surrounding bone through osteointegration whereby healing time is reduced.
Dependencies are inferred from the claim text.