HYBRID DENTAL IMPLANT
The present invention provides for a hybrid dental implant having a screw body with at least one external thread, which comprises an upper portion with an open ceiling configured to receive an unhardened cement, a middle portion having an inner cavity and one or more side openings extending from the inner cavity, wherein the open ceiling is in communication with the inner cavity to form a hollow inner channel, which allows the unhardened cement to move through the side openings and to penetrate the surrounding bone; and a lower portion with a closed floor. It also provides for a method of installing a hybrid dental implant into a bone.
1 . A hybrid dental implant having a screw body with at least one external thread, comprising
a) an upper portion with an open ceiling configured to receive an unhardened bone cement,
b) a middle portion having an inner cavity and one or more side openings extending from the inner cavity, wherein the open ceiling is in communication with the inner cavity to form a hollow inner channel, which allows a portion of the unhardened bone cement to move through the side openings and to penetrate into the surrounding bone; and
c) a lower portion with a closed floor.
2 . The hybrid dental implant in accordance with claim 1 , wherein the middle portion occupies no more than about 50% of the entire length of the implant.
3 . The hybrid dental implant in accordance with claim 1 , wherein the middle portion occupies no more than about 40% of the entire length of the implant.
4 . The hybrid dental implant in accordance with claim 1 , wherein the open ceiling is configured to couple with a bone cement syringe.
5 . The hybrid dental implant in accordance with claim 1 , wherein the side openings of the middle portion are formed of two or more columns.
6 . The hybrid dental implant in accordance with claim 1 , wherein the bone cement is an injectable, biocompatible bone filling or substitution material.
7 . The hybrid dental implant in accordance with claim 1 , wherein the bone cement comprises PMMA cement, modified PMMA cement, calcium phosphate cement, glass-ionomer cement, composite resin cement, osteoinductive cement, and a mixture or combinations thereof.
8 . The hybrid dental implant in accordance with claim 1 , wherein the bone cement comprises PMMA cement with one or more suitable additives.
9 . The hybrid dental implant in accordance with claim 1 , wherein the lower portion comprises one or more self-tapping cuts at a front end of the lower portion.
10 . The hybrid dental implant in accordance with claim 1 , further comprising a coating of bone-inducing material on at least a portion of an outer surface of the implant.
11 . A method for installing a hybrid dental implant into a bone, the method comprising:
a) screwing a hybrid implant with a screw body having at least one external thread into a bored hole in the bone; and
b) injecting a suitable amount of unhardened bone cement into an open ceiling of the implant, thereby pushing the cement into an upper portion of the implant, whereby the cement moves through a hollow inner channel, which is formed of an inner implant having one or more side openings, through which the cement penetrates the surrounding bone but does not move substantially past a lower portion of the implant that forms a closed floor.
12 . The method in accordance with claim 11 , further comprising the steps of
a) waiting for a period of time sufficient to allow the hardening of the bone cement; and
b) attaching a dental abutment and/or prosthesis to the implant.
13 . The method in accordance with claim 11 , further comprising a step of using a push cylinder to apply pressure on the bone cement to enable it to penetrate cracks and/or spaces in the surrounding bone.
14 . A hybrid implant for orthopedic applications, having a screw body with at least one external thread, comprising
a) an upper portion with an open ceiling configured to receive an unhardened bone cement,
b) a middle portion having an inner cavity and one or more side openings extending from the inner cavity, wherein the open ceiling is in communication with the inner cavity to form a hollow inner channel, which allows a portion of the unhardened bone cement to move through the side openings and to penetrate into the surrounding bone; and
c) a lower portion with a closed floor.
15 . The hybrid dental implant in accordance with claim 14 , wherein the middle portion occupies no more than about 50% of the entire length of the implant.
16 . A hybrid screw for construction applications, having a screw body with at least one external thread, comprising
a) an upper portion with an open ceiling configured to receive an unhardened construction cement,
b) a middle portion having an inner cavity and one or more side openings extending from the inner cavity, wherein the open ceiling is in communication with the inner cavity to form a hollow inner channel, which allows a portion of the unhardened construction cement to move through the side openings and to penetrate into the surrounding construction material; and
c) a lower portion with a closed floor.
17 . The hybrid screw in accordance with claim 16 , wherein the middle portion occupies no more than about 80% of the entire length of the implant.