WO2002034155A1 - Dental implant - Google Patents
Dental implant Download PDFInfo
- Publication number
- WO2002034155A1 WO2002034155A1 PCT/CA2001/001440 CA0101440W WO0234155A1 WO 2002034155 A1 WO2002034155 A1 WO 2002034155A1 CA 0101440 W CA0101440 W CA 0101440W WO 0234155 A1 WO0234155 A1 WO 0234155A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- dental
- implant
- porosity
- head
- pore size
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/50—Materials characterised by their function or physical properties, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
- A61L27/56—Porous materials, e.g. foams or sponges
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
- A61C8/0012—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the material or composition, e.g. ceramics, surface layer, metal alloy
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
- A61C8/0012—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the material or composition, e.g. ceramics, surface layer, metal alloy
- A61C8/0016—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the material or composition, e.g. ceramics, surface layer, metal alloy polymeric material
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/02—Inorganic materials
- A61L27/04—Metals or alloys
- A61L27/06—Titanium or titanium alloys
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/28—Materials for coating prostheses
- A61L27/34—Macromolecular materials
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
- A61C8/0012—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the material or composition, e.g. ceramics, surface layer, metal alloy
- A61C8/0013—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the material or composition, e.g. ceramics, surface layer, metal alloy with a surface layer, coating
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2430/00—Materials or treatment for tissue regeneration
- A61L2430/12—Materials or treatment for tissue regeneration for dental implants or prostheses
Definitions
- the invention relates to medicine, namely to stomatology and more especially concerns a dental implant for supporting a dental prosthesis.
- a first known device includes a cylindrical dental implant as described in Endosseous Dental Prosthesis, The USSR Copyright No. 1557709, consisting of an endosseous part, a neck and a supporting head to which a tooth prosthesis is fastened later.
- the core of the implant is made of solid TiNi alloy and rings made of porous and dense TiNi alloy are supported or strung on the core. Wire elements arranged in tiers are built into some rings for the reinforcement of the periodontal bonds.
- a device of this type is illustrated in Fig. 1.
- This known device is of complicated structure; it has poor integration with the periodontium, specially in the dense pericervical area, is highly subjected to the penetration of infection into the bone socket of the implant, with such subsequent response of the organism as the proliferation and the migration of the epithelium, the formation of micro-abscesses and the development of granulation.
- a second known implant also includes a cylindrical dental implant containing an endosseous part, a neck and a supporting head as described in T e Application of Shape Memory Alloys in Stomatology, M. Z. Mirgazimov, N. . Polenichkin, N. E. Gunter, N. I. Itin. Moscow: Medicine, 1991, p. 192.
- the endosseous part possesses a supporting core made of dense Ti ⁇ i alloy with porous coating and a supporting head on which a tooth is fastened. This device is simpler in its structure and technology compared to the known device described above and illustrated in Fig. 1.
- the disadvantage of this second implant is its poor osseointegration due to the low mass of the porous material present as a coating on a solid core, and the failure of the prosthesis caused by the poor integration of the implant into the periodontium in its cervical part.
- a third implant is the dental implant described in Russian Patent 2,098,043, which consists of an endosseous part, and a neck with a fastened supporting head.
- the endosseous part contains a supporting core made of dense Ti ⁇ i alloy having a porous coating on the base and the neck.
- the porous coating and the elaborate shape of the neck of this third device contribute to the success of the prosthesis due to the improvement of the osseointegration at the cervical part and the reduction of the bone tissue resorption.
- the disadvantage of this third implant is its poor osseointegration due to the low mass of the porous material forming a coating on the endosseous part.
- a dental implant comprising a unitary member comprising an endosseous body and a supporting head, said unitary member being of permeable porous TiNi alloy, said supporting head being adapted to support a dental prosthesis.
- a dental implant of the invention to support a dental prosthesis in a patient having need of such dental prosthesis.
- a method of fitting a dental prosthesis in a dental site in the oral cavity of a patient comprising inserting in a bone socket at the dental site, an implant of the invention with the endosseous body innermost and the head outermost in said bone socket, and mounting a dental prosthesis on said head such that the prosthesis extends outwardly of the dental site.
- an implant of the invention and a dental prosthesis supported on and affixed to said head.
- a dental implant comprising a unitary member consisting of an endosseous part, a neck and a supporting head, the unitary member being of permeable porous TiNi alloy and reinforced along its length with at least one wire, preferably a single wire, made of dense TiNi alloy; preferably the implant is provided with a polymer coating on the neck and the supporting head.
- the permeable porous NiTi alloy of the unitary member suitably has a porosity of 8 to 90%, and more especially comprises a porous body, in which the porosity extends throughout the body.
- the body may be formed with a controllable and variable porosity.
- the porosity is at least 40% and preferably not more than
- the permeability is derived from capillarity in the network of passageways which define the porosity.
- the capillarity may be produced in the article by inclusion therein of a large number of pores of fine size which interconnect to produce capillary passages.
- Capillarity is advantageous in that it promotes migration of a desired fluid material into the network of passageways, and retention of the fluid material in the network, without the need to apply external hydraulic forces.
- the network has a coefficient of permeability of 2 x 10 " to 2 x 10 "5 , and the permeability is isotropic.
- the capillarity and the isotropic character are, in particular, achieved when the network defining the porosity comprises pores of different pore size, the pore size distribution being as follows:
- the pore size distribution is as follows:
- the porosity of a material effects its physio-mechanical qualities, for example, mechanical durability, corrosion resistance, super-elasticity and deformational cyclo-resistivity.
- the porous nickel-titanium alloy suitably comprises 48 to 52%o, by atomic weight, titanium, 48 to 52%, by atomic weight, nickel, less than 2%, by atomic weight, molybdenum, less than 2%, by atomic weight, iron and minor or trace amounts of other elements, to a total of 100%o.
- the alloy contains each of molybdenum and iron in an amount of more than 0%, by atomic weight and less than 2%, by atomic weight.
- the porous nickel titanium alloy implant of the invention displays mechanical behavior very similar to that of live tissue and demonstrates high biomechanical capability.
- the porosity and permeability of the implant of the invention are defined by a network of interconnected passageways extending throughout the unitary member.
- the network exhibits a permeability for fluid material effective to permit complete migration of the fluid material throughout the network, and the implant is elastically deformable.
- the permeability arises from a capillarity effect in the network and in particular a capillarity resulting from pores of different pore sizes with a defined pore size distribution in accordance with the preferred embodiments defined herein.
- the network of pores renders the implant fully permeable to biological tissue thereby facilitating the osseointegration of the implant in the bone socket.
- living tissue and bone grows throughout the implant and even blood circulation systems develop throughout the implant such that the implant becomes "living".
- the implant of the invention may be used for substitution of missing individual teeth and dentitions by endosseous implantation of the prosthesis in a prepared bone socket.
- the unitary structure of the implant facilitates its technology: that is simultaneous manufacture of all the implant structure, including the reinforcing wires by means of agglomeration.
- the cross- section of the implant can have any desired shape as required by the specificity of the concrete prosthesis; however, the circular shape is prompted by the technology of the operation, so the implant is preferably cylindrical.
- the preferable transverse shape of the endosseous part is circular, this facilitates the manufacture and the installation of the implant with totally cylindrical shape, including its endosseous part, neck and the supporting head.
- the unitary structure of the implant means that the supporting head is present immediately after the implantation of the endosseous part, that is the first stage of the operation.
- the known implants need to be covered with the gingival tissue for four months after the first stage of the implantation in order to prevent the penetration of infection into the bone socket through its pores.
- the present implant is preferably provided with a polymer coating of its supporting head and its neck, the area generally subjected to the penetration of the infection, to avoid such infection.
- FigJ shows a prior art dental implant with the wire elements extending from rings to form the periodontal bonds.
- Fig.2 shows a prior art dental implant with a screw head.
- Fig.3 shows a prior art dental implant with a porous coating on the neck.
- Fig 4a shows a dental implant of the invention.
- Fig. 4b shows the implant of Fig. 4a in a cross-section;
- Fig.5 is a roentgenogram of installed dental implants.
- the dental implant 10 of the invention has a unitary member 1 of porous NiTi reinforced by wires 2 along its length.
- Unitary member 1 has an endosseous body 12, a neck 14 and a head
- a polymer coating 3 extends over neck 14 and heat 16.
- the control examination of the implants detected their mobility and the presence of peri-implantation sulcus resulting from the low porous mass and the deficit of the osseointegration, and also the drift of the supporting head and the reinforcing core developing during the mastication at the site of their threaded connection.
- the implantation was performed in the following way:
- the bone socket was created under local trans-mucous anesthesia by perforating a cylindrical hole with a diameter less than the implant's diameter by 0J mm.
- the implant sterilized in an autoclave was carefully hammered into the bone socket.
- the gingival area adjoining the implant was dressed with Solcoseryl for 6 postoperative hours in order to protect it from the intraoral infection.
- a provisional plastic crown was fastened on the head of the implant in order to provide the occlusal adaptation.
- the roentgenogram (Fig.5 - 23) made in 4 months postoperatively demonstrates no peri-implantation sulcus, and is evidence of successful osseointegration and the guarantee of extended and effective functioning of the dental implant.
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Medicinal Chemistry (AREA)
- Dermatology (AREA)
- Transplantation (AREA)
- Dentistry (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Ceramic Engineering (AREA)
- Engineering & Computer Science (AREA)
- Dispersion Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Prostheses (AREA)
- Dental Prosthetics (AREA)
- Dental Preparations (AREA)
Abstract
A dental implant comprises a unitary member of permeable, porous TiNi alloy; the member has an endosseous body and a supporting head which is adapted to support a dental prosthesis; the unitary member is preferably substantially cylindrical and the endosseous body, in use, is seated in a bone socket at a dental site.
Description
DENTAL IMPLANT
Technical Field
The invention relates to medicine, namely to stomatology and more especially concerns a dental implant for supporting a dental prosthesis.
Background Art
The variety of the dental implants used nowadays for the solution of various problems of oral reconstruction, which employ the remarkable advancements in modern technology and material engineering, has become so diverse that they can be categorized by their shape, material, localization, the technique of the manufacture, etc. as shown in Manual of Orthopedic Stomatology, ed. by V. N. Kopeikin, Moscow: Medicine, 1993, p.419.
A first known device includes a cylindrical dental implant as described in Endosseous Dental Prosthesis, The USSR Copyright No. 1557709, consisting of an endosseous part, a neck and a supporting head to which a tooth prosthesis is fastened later. The core of the implant is made of solid TiNi alloy and rings made of porous and dense TiNi alloy are supported or strung on the core. Wire elements arranged in tiers are built into some rings for the reinforcement of the periodontal bonds. A device of this type is illustrated in Fig. 1.
This known device is of complicated structure; it has poor integration with the periodontium, specially in the dense pericervical area, is highly subjected to the penetration of infection into the bone socket of the implant, with such subsequent response of the organism as the proliferation and the migration of the epithelium, the formation of micro-abscesses and the development of granulation.
A second known implant also includes a cylindrical dental implant containing an endosseous part, a neck and a supporting head as described in
T e Application of Shape Memory Alloys in Stomatology, M. Z. Mirgazimov, N. . Polenichkin, N. E. Gunter, N. I. Itin. Moscow: Medicine, 1991, p. 192. The endosseous part possesses a supporting core made of dense TiΝi alloy with porous coating and a supporting head on which a tooth is fastened. This device is simpler in its structure and technology compared to the known device described above and illustrated in Fig. 1.
The disadvantage of this second implant is its poor osseointegration due to the low mass of the porous material present as a coating on a solid core, and the failure of the prosthesis caused by the poor integration of the implant into the periodontium in its cervical part.
A third implant is the dental implant described in Russian Patent 2,098,043, which consists of an endosseous part, and a neck with a fastened supporting head. The endosseous part contains a supporting core made of dense TiΝi alloy having a porous coating on the base and the neck. Unlike the second known device described above, the porous coating and the elaborate shape of the neck of this third device contribute to the success of the prosthesis due to the improvement of the osseointegration at the cervical part and the reduction of the bone tissue resorption. The disadvantage of this third implant is its poor osseointegration due to the low mass of the porous material forming a coating on the endosseous part.
DISCLOSURE OF THE INVENTION
In accordance with one aspect of the invention there is provided a dental implant comprising a unitary member comprising an endosseous body and a supporting head, said unitary member being of permeable porous TiNi alloy, said supporting head being adapted to support a dental prosthesis.
In another aspect of the invention there is provided use of a dental implant of the invention to support a dental prosthesis in a patient having need of such dental prosthesis.
In still another aspect of the invention there is provided a method of fitting a dental prosthesis in a dental site in the oral cavity of a patient comprising inserting in a bone socket at the dental site, an implant of the invention with the endosseous body innermost and the head outermost in said bone socket, and mounting a dental prosthesis on said head such that the prosthesis extends outwardly of the dental site. In a further aspect of the invention there is provided in combination an implant of the invention, and a dental prosthesis supported on and affixed to said head.
DESCRIPTION OF PREFERRED EMBODIMENTS In a preferred embodiment of the invention there is provided a dental implant comprising a unitary member consisting of an endosseous part, a neck and a supporting head, the unitary member being of permeable porous TiNi alloy and reinforced along its length with at least one wire, preferably a single wire, made of dense TiNi alloy; preferably the implant is provided with a polymer coating on the neck and the supporting head.
The permeable porous NiTi alloy of the unitary member suitably has a porosity of 8 to 90%, and more especially comprises a porous body, in which the porosity extends throughout the body. In particular, the body may be formed with a controllable and variable porosity. Preferably the porosity is at least 40% and preferably not more than
80%.
Preferably the permeability is derived from capillarity in the network of passageways which define the porosity.
The capillarity may be produced in the article by inclusion therein of a large number of pores of fine size which interconnect to produce capillary passages.
Capillarity is advantageous in that it promotes migration of a desired fluid material into the network of passageways, and retention of the fluid material in the network, without the need to apply external hydraulic forces.
1 T
In general the network has a coefficient of permeability of 2 x 10" to 2 x 10"5, and the permeability is isotropic.
The capillarity and the isotropic character are, in particular, achieved when the network defining the porosity comprises pores of different pore size, the pore size distribution being as follows:
Pore Size in Microns Quantity
10"2 - 10"1 1 - 5% 10"1 - 10 5 - 10%
10 - 100 10 - 20%
100 - 400 20 - 50%
400 - 1000 10 - 50% above 1000 remainder to 100% In an especially preferred embodiment the pore size distribution is as follows:
Pore Size in Microns Quantity
10"2 - 10 5 - 15%
10 - 400 15 - 70% 400 - 1000 10 - 70% above 1000 remainder to 100%
The porosity of a material effects its physio-mechanical qualities, for example, mechanical durability, corrosion resistance, super-elasticity and deformational cyclo-resistivity.
The porous nickel-titanium alloy (NiTi) suitably comprises 48 to 52%o, by atomic weight, titanium, 48 to 52%, by atomic weight, nickel, less than 2%, by atomic weight, molybdenum, less than 2%, by atomic weight, iron and minor or trace amounts of other elements, to a total of 100%o. Desirably the alloy contains each of molybdenum and iron in an amount of more than 0%, by atomic weight and less than 2%, by atomic weight. The porous nickel titanium alloy implant of the invention displays mechanical behavior very similar to that of live tissue and demonstrates high biomechanical capability.
The porosity and permeability of the implant of the invention are defined by a network of interconnected passageways extending throughout the unitary member. The network exhibits a permeability for fluid material effective to permit complete migration of the fluid material throughout the network, and the implant is elastically deformable.
Most suitably the permeability arises from a capillarity effect in the network and in particular a capillarity resulting from pores of different pore sizes with a defined pore size distribution in accordance with the preferred embodiments defined herein.
The network of pores renders the implant fully permeable to biological tissue thereby facilitating the osseointegration of the implant in the bone socket. After being implanted in the dental site, living tissue and bone grows throughout the implant and even blood circulation systems develop throughout the implant such that the implant becomes "living".
The implant of the invention may be used for substitution of missing individual teeth and dentitions by endosseous implantation of the prosthesis in a prepared bone socket.
The combination of all these features produces a successful technical outcome. The unitary structure of the implant facilitates its technology: that is simultaneous manufacture of all the implant structure, including the reinforcing wires by means of agglomeration. At the same time the cross- section of the implant can have any desired shape as required by the specificity of the concrete prosthesis; however, the circular shape is prompted by the technology of the operation, so the implant is preferably cylindrical.
Depending on the concrete indications and characteristics of the edentia the preferable transverse shape of the endosseous part is circular, this facilitates the manufacture and the installation of the implant with totally cylindrical shape, including its endosseous part, neck and the supporting head.
Longitudinal reinforcement along the entire length of the implant with at least one wire made of dense TiNi alloy strengthens the implant and performs the function of the solid core in the lαiown devices. The wire, or wires, unlike the solid core of the lαiown devices, occupies less space, so there is more space for the porous material which promotes the osseointegration. At the same time, it has been demonstrated that the mechanical durability of this preferred construction is sufficient for the extended and full-value functioning of the implant. The unitary structure of the implant means that the supporting head is present immediately after the implantation of the endosseous part, that is the first stage of the operation. In contrast the known implants need to be covered with the gingival tissue for four months after the first stage of the
implantation in order to prevent the penetration of infection into the bone socket through its pores. The present implant is preferably provided with a polymer coating of its supporting head and its neck, the area generally subjected to the penetration of the infection, to avoid such infection.
BRIEF DESCRIPTION OF DRAWINGS
The invention is illustrated by reference to the accompanying drawings in which:
FigJ shows a prior art dental implant with the wire elements extending from rings to form the periodontal bonds.
Fig.2 shows a prior art dental implant with a screw head.
Fig.3 shows a prior art dental implant with a porous coating on the neck.
Fig 4a shows a dental implant of the invention. Fig. 4b shows the implant of Fig. 4a in a cross-section; and
Fig.5is a roentgenogram of installed dental implants.
With particular reference to Figs. 4a and 4b, the dental implant 10 of the invention has a unitary member 1 of porous NiTi reinforced by wires 2 along its length. Unitary member 1 has an endosseous body 12, a neck 14 and a head
16. A polymer coating 3 extends over neck 14 and heat 16.
With particular reference to Fig. 5, the implant of this invention is shown at 21, implants of the third kind referred to above are shown at 22 and implants of the invention with teeth installed are shown at 23. EXAMPLE
The use of the implant of the present invention for the prosthesis of lost teeth is illustrated by a concrete case of the clinical use of the implant
in the Clinic of Dental Implantology of Medical Material Engineering Research Institute.
Case description. Female patient R., 42 years old, diagnosed with 3d class edentia of the maxilla and the mandible according to Kennedy. Two years prior to the trial the patient had a two-stage implantation of dental implants of cylindrical shape with removable supporting head and reinforcing core (Fig.2 and Fig.5. position 22).
The control examination of the implants detected their mobility and the presence of peri-implantation sulcus resulting from the low porous mass and the deficit of the osseointegration, and also the drift of the supporting head and the reinforcing core developing during the mastication at the site of their threaded connection.
The patient underwent implantation of the implant of the invention (Fig.4 and Fig.5, position 21) with the following characteristics: Material of member 1 - porous TiNi alloy, TN- 10;
The total length of implant 10 - 17 mm;
Diameter of implant 10 - 3.5 mm;
Material of the wires - dense TiNi alloy, TN-10;
Diameter of the wire 2 - 0J mm; The length of the coated distal part -(neck 16 and head 16) with polymer coating 3 - 7 mm;
The thickness of the polymer coating 3 - 0.2 mm.
The implantation was performed in the following way:
The bone socket was created under local trans-mucous anesthesia by perforating a cylindrical hole with a diameter less than the implant's diameter by 0J mm. The implant sterilized in an autoclave was carefully hammered into the bone socket. The gingival area adjoining the implant was dressed with Solcoseryl for 6 postoperative hours in order to protect it
from the intraoral infection. A provisional plastic crown was fastened on the head of the implant in order to provide the occlusal adaptation.
In 4 months the osteosynthesis in the endosseous part of the implant was complete, and the dental prosthesis was fastened on the supporting head. The roentgenogram (Fig.5 - 23) made in 4 months postoperatively demonstrates no peri-implantation sulcus, and is evidence of successful osseointegration and the guarantee of extended and effective functioning of the dental implant.
Claims
1. A dental implant comprising a unitary member comprising an endosseous body and a supporting head, said unitary member being of permeable porous TiNi alloy, said supporting head being adapted to support a dental prosthesis.
2. An implant according to claim 1, wherein said unitary member has at least one reinforcing wire of solid, non-porous TiNi extending lengthwise of said member in an interior of said member.
3. An implant according to claim 1 or 2, having a polymer coating extending over supporting head.
4. An implant according to claim 1, 2 or 3, wherein said unitary member is substantially cylindrical.
5. An implant according to claim 1, 2, 3 or 4, wherein said member has a porosity of 40%) to 80%o and a coefficient of peπneability of 2 x 10" to 2 x 10" and the porosity and permeability is defined by a network of interconnected pores extending throughout the member, in which the porosity comprises pores of different pore size, the pore size distribution being as follows:
Pore Size in Microns Quantity
10"2 - 10 5 - 15%
10 - 400 15 - 70%
400 - 1000 10 - 70% above 1000 remainder to 100%).
6. A dental implant consisting of a unitary, substantially cylindrical member of permeable, porous TiNi alloy, said member having an endosseous portion adapted to be seated in a bone socket of a dental site and a head adapted to support a dental prosthesis.
7. An implant according to daim 6, wherein said alloy comprises 48 to 52%, by atomic weight, titanium and 48 to 52%, by atomic weight nickel and said member has a porosity of 40% to 80%o and a coefficient of permeability of 2 x 10" to 2 x 10" and the porosity and permeability as defined by a network of interconnected pores extending throughout the member, in which the porosity comprises pores of different pore size, the pore size distribution being as follows:
Pore Size in Microns Quantity
10"2 - 10 5 - 15%
10 - 400 15 - 70%
400 - 1000 10 - 70% above 1000 remainder to 100%).
8. In combination a dental implant as defined in any one of claims 1 to 7, and a dental prosthesis supported on and affixed to said head.
9. Use of a dental implant as defined in any one of claims 1 to 9, to support a dental prosthesis in a patient having need of such dental prosthesis.
10. A method of fitting a dental prosthesis in a dental site of the oral cavity of a patient comprising: inserting in a bone socket at the dental site of the oral cavity of the patient an implant as defined in any one of claims 1 to 7, with said endosseous body innermost in said bone socket, and said head outermost in said bone socket, and mounting a dental prosthesis on said head such that the prosthesis extends outwardly of said dental site.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2002210298A AU2002210298A1 (en) | 2000-10-26 | 2001-10-12 | Dental implant |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA 2324613 CA2324613A1 (en) | 2000-10-26 | 2000-10-26 | Dental implant |
CA2,324,613 | 2000-10-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002034155A1 true WO2002034155A1 (en) | 2002-05-02 |
Family
ID=4167479
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CA2001/001440 WO2002034155A1 (en) | 2000-10-26 | 2001-10-12 | Dental implant |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU2002210298A1 (en) |
CA (1) | CA2324613A1 (en) |
WO (1) | WO2002034155A1 (en) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2861597A1 (en) * | 2003-11-04 | 2005-05-06 | Vital Implant Sa | Bone substitution structure for use in maxillo-facial surgery is made from biocompatible porous material such as tantalum or titanium |
US7291012B2 (en) * | 2003-02-27 | 2007-11-06 | Lyren Philip S | Dental implant with porous body |
GB2477010A (en) * | 2010-01-18 | 2011-07-20 | Dental Devices Ltd Ab | Dental implant with pores |
US8075312B2 (en) * | 2005-08-30 | 2011-12-13 | Zimmer Dental, Inc. | Dental implant with improved osseointegration features |
US8562346B2 (en) * | 2005-08-30 | 2013-10-22 | Zimmer Dental, Inc. | Dental implant for a jaw with reduced bone volume and improved osseointegration features |
US8684734B1 (en) * | 2003-02-27 | 2014-04-01 | Philip Scott Lyren | Dental implant with porous body |
US8851891B2 (en) | 2008-11-06 | 2014-10-07 | Zimmer Dental, Inc. | Expandable bone implant |
US9066771B2 (en) | 2008-07-02 | 2015-06-30 | Zimmer Dental, Inc. | Modular implant with secured porous portion |
US9095396B2 (en) | 2008-07-02 | 2015-08-04 | Zimmer Dental, Inc. | Porous implant with non-porous threads |
US9149345B2 (en) | 2007-08-30 | 2015-10-06 | Zimmer Dental, Inc. | Multiple root implant |
US9439738B2 (en) | 2009-11-24 | 2016-09-13 | Zimmer Dental, Inc. | Porous implant device with improved core |
US9707058B2 (en) | 2009-07-10 | 2017-07-18 | Zimmer Dental, Inc. | Patient-specific implants with improved osseointegration |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04170946A (en) * | 1990-11-01 | 1992-06-18 | Advance Co Ltd | Artificial tooth |
RU1799265C (en) * | 1990-12-13 | 1993-02-28 | Владимир Кузьмич Поленичкин | Intraosseous dental implant |
RU2137441C1 (en) * | 1997-06-17 | 1999-09-20 | Гюнтер Виктор Эдуардович | Material for tissue plastic |
-
2000
- 2000-10-26 CA CA 2324613 patent/CA2324613A1/en not_active Abandoned
-
2001
- 2001-10-12 WO PCT/CA2001/001440 patent/WO2002034155A1/en active Application Filing
- 2001-10-12 AU AU2002210298A patent/AU2002210298A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04170946A (en) * | 1990-11-01 | 1992-06-18 | Advance Co Ltd | Artificial tooth |
RU1799265C (en) * | 1990-12-13 | 1993-02-28 | Владимир Кузьмич Поленичкин | Intraosseous dental implant |
RU2137441C1 (en) * | 1997-06-17 | 1999-09-20 | Гюнтер Виктор Эдуардович | Material for tissue plastic |
Non-Patent Citations (3)
Title |
---|
DATABASE WPI Section Ch Week 200037, Derwent World Patents Index; Class D22, AN 2000-429205, XP002191661 * |
DATABASE WPI Section PQ Week 199419, Derwent World Patents Index; Class P32, AN 1994-157851, XP002191660 * |
PATENT ABSTRACTS OF JAPAN vol. 016, no. 473 (C - 0991) 2 October 1992 (1992-10-02) * |
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7291012B2 (en) * | 2003-02-27 | 2007-11-06 | Lyren Philip S | Dental implant with porous body |
US8043090B1 (en) * | 2003-02-27 | 2011-10-25 | Philip Scott Lyren | Dental implant with porous body |
US8297974B1 (en) * | 2003-02-27 | 2012-10-30 | Philip Scott Lyren | Dental implant with porous body |
US8684734B1 (en) * | 2003-02-27 | 2014-04-01 | Philip Scott Lyren | Dental implant with porous body |
FR2861597A1 (en) * | 2003-11-04 | 2005-05-06 | Vital Implant Sa | Bone substitution structure for use in maxillo-facial surgery is made from biocompatible porous material such as tantalum or titanium |
US8899981B2 (en) | 2005-08-30 | 2014-12-02 | Zimmer Dental, Inc. | Dental implant for a jaw with reduced bone volume and improved osseointegration features |
US10070945B2 (en) | 2005-08-30 | 2018-09-11 | Zimmer Dental, Inc. | Dental implant for a jaw with reduced bone volume and improved osseointegration features |
US8075312B2 (en) * | 2005-08-30 | 2011-12-13 | Zimmer Dental, Inc. | Dental implant with improved osseointegration features |
US8562346B2 (en) * | 2005-08-30 | 2013-10-22 | Zimmer Dental, Inc. | Dental implant for a jaw with reduced bone volume and improved osseointegration features |
US9149345B2 (en) | 2007-08-30 | 2015-10-06 | Zimmer Dental, Inc. | Multiple root implant |
US9066771B2 (en) | 2008-07-02 | 2015-06-30 | Zimmer Dental, Inc. | Modular implant with secured porous portion |
US9095396B2 (en) | 2008-07-02 | 2015-08-04 | Zimmer Dental, Inc. | Porous implant with non-porous threads |
US8851891B2 (en) | 2008-11-06 | 2014-10-07 | Zimmer Dental, Inc. | Expandable bone implant |
US9744007B2 (en) | 2008-11-06 | 2017-08-29 | Zimmer Dental, Inc. | Expandable bone implant |
US9707058B2 (en) | 2009-07-10 | 2017-07-18 | Zimmer Dental, Inc. | Patient-specific implants with improved osseointegration |
US9439738B2 (en) | 2009-11-24 | 2016-09-13 | Zimmer Dental, Inc. | Porous implant device with improved core |
US9901424B2 (en) | 2009-11-24 | 2018-02-27 | Zimmer Dental, Inc. | Porous implant device with improved core |
US10687919B2 (en) | 2009-11-24 | 2020-06-23 | Zimmer Dental, Inc. | Porous implant device with improved core |
GB2477010A (en) * | 2010-01-18 | 2011-07-20 | Dental Devices Ltd Ab | Dental implant with pores |
Also Published As
Publication number | Publication date |
---|---|
AU2002210298A1 (en) | 2002-05-06 |
CA2324613A1 (en) | 2002-04-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4270905A (en) | Replacement system for dental and other bone implants | |
Papavasiliou et al. | 3D-FEA of osseointegration percentages and patterns on implant-bone interfacial stresses | |
US9095396B2 (en) | Porous implant with non-porous threads | |
Tarnow et al. | Immediate loading of threaded implants at stage 1 surgery in edentulous arches: ten consecutive case reports with 1-to 5-year data. | |
US5697779A (en) | Temporary implant for use as an anchor in the mouth | |
Karabuda et al. | Histological and clinical evaluation of 3 different grafting materials for sinus lifting procedure based on 8 cases | |
Cavicchia et al. | Localized augmentation of the maxillary sinus floor through a coronal approach for the placement of implants. | |
Turley et al. | The loading of bioglass-coated aluminium oxide implants to produce sutural expansion of the maxillary complex in the pigtail monkey (Macaca nemestrina) | |
US5766009A (en) | Elastically stabilized endosseous dental implant | |
Nouri | Titanium foam scaffolds for dental applications | |
ES2823457T3 (en) | Dental implant | |
JP2009509696A (en) | Dental implant | |
WO2010002667A1 (en) | Porous implant with non-porous threads | |
JPH0524779B2 (en) | ||
WO2009032766A1 (en) | Dental implant prosthetic device with improved osseointegration and esthetic features | |
WO2002034155A1 (en) | Dental implant | |
CN112754698A (en) | Outer-layer gradient porous short implant for 3D printing and preparation method thereof | |
Borgonovo et al. | Use of endosseous one-piece yttrium-stabilized zirconia dental implants in premolar region: a two-year clinical preliminary report | |
Meijer et al. | A comparative study of flexible (Polyactive®) versus rigid (hydroxylapatite) permucosal dental implants. I. Clinical aspects | |
US20220151745A1 (en) | Anatomical dental implant arranged to be implanted in a naturally occurring cavity of the jawbone | |
Grenoble et al. | Materials and designs for implant dentistry | |
Caplanis et al. | Osseointegration: contemporary concepts and treatment | |
JPH08140996A (en) | Implant for dentistry made of titanium | |
Grande et al. | Immediate occlusal loading of Tapered Internal Laser-Lok® implants in partial arch rehabilitations: a 24-months clinical and radiographic study | |
RU2193370C2 (en) | Dental implant |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
REG | Reference to national code |
Ref country code: DE Ref legal event code: 8642 |
|
122 | Ep: pct application non-entry in european phase | ||
NENP | Non-entry into the national phase |
Ref country code: JP |