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The invention relates to dentistry, in particular to a group of dental implants used for two-stage implantation into the alveolar bone. Said invention makes it possible to create the conditions for successful ingrowth of bone and soft tissues into the implant obtainable by the best ingrowth of the bone tissue into the internal porous structure and the soft tissue ingrowth into a surface porous three-dimensional structure in the area of the alveolar bone. The inventive cylindrical implant, the base of which is made of titanium, comprises a cavity for the porous structure and a channel for injecting medicinal preparations, wherein the base is embodied in the form of an external thread-shaped spiral which is fastened to three longitudinal reinforcing ribs arranged inside the spiral together with the porous structure, the pore size of which ranges from 150 to 300 mkm.

Titel:	DENTAL IMPLANT
Autor/in / Beteiligte Person:	Dosta, Anatoli D. ; Artyushkevich, Aliaksandr S. ; Rozanov, Yury A.
Link:	View record in USPTO Patent Applications (Volltext)
Veröffentlichung:	2009
Medientyp:	Patent
Sonstiges:	Nachgewiesen in: USPTO Patent Applications Sprachen: English Document Number: 20090208907 Publication Date: August 20, 2009 Appl. No: 12/431836 Application Filed: April 29, 2009 Assignees: JOINT STOCK COMPANY 'ALTIMED' (Minsk, BY) Claim: 1. A cylinder-shaped dental implant with a titanium-made base comprising a cavity for a porous structure and a canal for administering medications, wherein said implant base is made in the form of an outer thread-shaped helix which is fixed on three longitudinal stiffening ribs positioned inside said helix and a porous structure having a pore size ranging from 150 to 300 μm is positioned inside said helix. Claim: 2. The dental implant as in claim 1, wherein the distal end portions of said longitudinal ribs are provided with a rigidly secured cylinder-shaped head having an axial bore, while in a bottom portion of said head there is made a thread having a shape and a pitch similar to a shape and a pitch of an outer thread-shaped helix, and an outer upper portion of said head is provided with an outer ring-shaped head in the form of a surface porous three-dimensional polymer structure from polytetrafluorethylene. Claim: 3. The dental implant as in claim 2, wherein at an upper portion of a cylinder-shaped head there is positioned a cone-shaped pin for making a tooth body, while said pin is provided with a stem having a longitudinal through canal which is fixed in an implant axial bore and is used to administer medications during operating and post-operating periods. Claim: 4. A cylinder-shaped dental implant with a titanium-made base comprising a cavity for a porous structure and a canal for administering medications, wherein said implant base is made in the form of an outer thread-shaped helix which is fixed on stiffening members, while a titanium-made porous structure is positioned inside said helix and an outer surface of said implant distal end portion is additionally provided with a ring-shaped head in the form of a surface porous three-dimensional polymer structure. Claim: 5. The dental implant as in claim 4, wherein a pore size of said porous structure ranges from 150 to 300 μm. Claim: 6. The dental implant as in claim 4, wherein the helix stiffening members are made in the form of three longitudinal stiffening ribs positioned inside said helix and made from the helix material. Claim: 7. The dental implant as in claim 4, wherein the helix stiffening members are made in the form of the bridges positioned between the helix coils and made from the helix material. Claim: 8. The dental implant as in claim 4, wherein a surface porous three-dimensional polymer structure is made from polytetrafluorethylene. Claim: 9. The dental implant as in claim 4, wherein a distal end portion of said implant is provided with a rigidly secured cylinder-shaped head having an axial bore, while in a bottom portion of said head there is made a thread having a shape and a pitch similar to a shape and a pitch of an outer thread-shaped helix, and a ring-shaped head in the form of a surface porous three-dimensional polymer structure is positioned in an outer surface of said bottom portion of said cylinder-shaped head. Claim: 10. The dental implant as in claim 4, wherein at an upper portion of said implant there is positioned a cone-shaped pin for making a tooth body, while said pin is provided with a stem fixed in an axial bore of said implant and having a longitudinal through channel for administering medications during operating and post-operating periods. Claim: 11. A cylinder-shaped dental implant with a titanium-made base comprising a cavity for a porous structure and a canal for administering medications, wherein at an outer surface of an implant distal end portion there is positioned a ring-shaped head in the form of a surface porous three-dimensional polymer structure. Claim: 12. The dental implant as in claim 11, wherein a base of said implant is made in the form of an outer threaded helix provided with stiffeners with a titanium-made porous structure positioned inside said helix. Claim: 13. The dental implant as in claim 12, wherein a pore size of said porous structure ranges from 150 to 300 μm. Claim: 14. The dental implant as in claim 12, wherein the helix stiffening members are made in the form of three longitudinal stiffening ribs positioned inside said helix and made from the helix material. Claim: 15. The dental implant as in claim 12, wherein the helix stiffening members are made in the form of the bridges positioned between the coils of said helix and made from the helix material. Claim: 16. The dental implant as in claim 11, wherein a surface porous three-dimensional polymer structure is made from polytetrafluorethylene. Claim: 17. The dental implant as in claim 11, wherein a distal end portion of said implant is provided with a rigidly secured cylinder-shaped head having an axial bore, while at a bottom portion of said head there is made a thread having a shape and a pitch similar to a shape and a pitch of an outer thread-shaped helix, and at an outer surface of said bottom portion of said cylinder-shaped head there is positioned a ring-shaped head in the form of a surface porous three-dimensional polymer structure. Claim: 18. The dental implant as in claim 11, wherein at an upper portion of said implant there is positioned a cone-shaped pin for making a tooth body, while said pin is provided with a stem fixed in an axial bore of said implant and having a longitudinal through channel for administering medications during operating and post-operating periods. Current U.S. Class: 433/174 Current International Class: 61

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DENTAL IMPLANT