EP3849463A2

EP3849463A2 - Dental implant made from peek material

Info

Publication number: EP3849463A2
Application number: EP19860598.2A
Authority: EP
Inventors: Murat ÇOBAN
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-09-12
Filing date: 2019-05-09
Publication date: 2021-07-21
Also published as: WO2020055352A2; WO2020055352A3; EP3849463A4

Abstract

Invention relates to a dental implant (10) placed onto tooth root, consisting of a frame (18) forming inner section of the embodiment; screwing space (14) formed inside said frame (18) and where embodiment is fixed to tooth root; an implant abutment (20) connected to said screwing space (14) from inner part and wherein the dental implant (10) consists of PEEK coating (13) made from PEEK and ceramic material.

Description

DENTAL IMPLANT MADE FROM PEEK MATERIAL

The Related Art

Invention relates to dental implant used in dentistry sector to fix prosthesis teeth to jaw bones, instead of tooth root.

The invention particularly relates to dental implant made from organic thermoplastic polymers (PEEK) having chemical and physical resistance and in structure compatible with human jaw bone.

Background of the Invention

Today tooth implants of various diameter and sizes are placed into jaw bone in place of missing teeth through surgical operation in dentistry.

While titanium has been used as production material of implants used until today, use of zirconium ceramic has been started recently.

The places of missing teeth on the jaw bone are drilled according to certain criteria and dental implants produced from titanium mostly and in sizes fitting said drilled holes are placed by means of screwing and the material mix to bone in time. This is called Osseo integration.

Following placement of the implant, immediately or after waiting for a time for Osseo integration, prosthesis teeth onto implants are fixed into mouth by use of an interconnection part called abutment.

After titanium material is brought into current tooth implant form by use of cad-cam, cnc and similar techniques, the surface is acidified or sand blasted to provide porosity so as to enable Osseo integration to bone or coated with hydroxlapatite, and then sterilized and packed.

In the previous art even though tooth implants made from titanium or zirconium ceramic are osseo integrated to jaw bone and prosthesis teeth are placed thereon, the materials are too hard and are to mix to bone tightly. For that reason, the pressure of average 40-60 kg/cm2 occurring during chewing is transmitted directly to jaw bone without any absorption. In such case the followings are observed in patients: Discomfort in chewing,

• Metallic taste in mouth as corrosion may occur,

• Pain in bone or temporomandibular joint during chewing

• Breaks in on implant prosthesis teeth, · Wearing, breaking and pain in natural teeth on opposite jaw of over implant prosthesis teeth

• Constant loosening and breaks in interconnecting screws fixing implant and abutment parts,

• Rarely breaks in implants in bone, · Resorption on surface between implant and bone subject to extreme wearing, and separation of implant from jaw bone, deformation of Osseo integration,

• Rarely, allergic reaction against titanium

• Electric activity occurring in mouth due to metal surfaces.

Dental implants used in the related art are not anti-bacterial. They get dirty and infected easily and Osseo integrations are damaged and separation from bone can be seen. Definition of separation in medicine is peri implantitis.

In addition, in one single over implant prosthesis made in patients having no teeth on lower jaw, compression and stress occur on bone, implant and implant parts (abutment connection screw etc.) because of torsion motion made by lower jaw during opening-closing action of jaw. Bone resorptions starting from implant neck area, screw loosening, implant or prosthesis breaks may occur due to said pressure.

When the literature is searched, various embodiments relating to the said dental implant are seen. One of them is patent with application number TR2018/05290 and entitled“screw and mounting set for dental implantology". Abstract of invention of class A61 C 8/00 reads as: “Invention relates to a screw, a tool and a system for dental implantology forming a fixing system and components thereof used in a dynamic support mounting. Said dynamic support mounting is used for production of prosthesis on dental implants in implantology for humans in name for fixing the screws at an angle.” Said dental implant consists of a screw and an implant support fixed thereon. Invention material and embodiment does not provide tight interconnection in tooth root and may get loosened after long-term use.

Another example related to said embodiment is the patent entitled "Method for Dental Implant Production" with application number of TR2018/01842. Having class A61 C 8/00 the invention’s abstract reads as "Invention relates to dental implant production method consisting of sintering wet infrastructure materials produced from metal powders by powder metallurgy alone after coating with hydroxapatite or yittria-stabilize zirconium oxide electrophoretically."

In this application, oxide coating is made for mixing dental implant to tooth root. This is both extra cost and not long-term solution.

Therefore, these applications can be shown as an example for some of disadvantages.

In conclusion, developments have been made in dental implants in parallel to technology and, therefore, new embodiments eliminating the above disadvantages and offering solutions to existing systems are needed.

Purpose of the Invention

The invention relates to dental implants different from the embodiments used in the related art and developed to solve said disadvantages and providing some additional advantages.

Polyetheretherketone (PEEK) organic thermoplastic polymer from which dental implant of invention is produced is a material having chemical and physical resistance and shows a flexibility similar to jaw bone. Because of such structure it is of elastic, shock absorbing feature same as human bone and is not fragile. It has features similar to biologic materials. It is also biocompatible with jaw bone. It is not allergic.

Purpose of the invention: it does not form pressure in bone because it has a flexibility coefficient close to bone flexibility.

Another purpose of invention; it provides compatibility to jaw bone in a short time period because of PEEK material’s biocompatibility.

A further purpose of invention is that it can absorb pressure generated as a result of chewing. Therefore, generated pressure is not directly transmitted to jaw bone but absorbed by related material. Comfort will be provided by means of imitation of shock absorbing suspension system provided by natural teeth. Another purpose of the invention is to prevent metallic taste as it is not subjected to corrosion.

A further purpose of the invention is to prevent wearing or breaking in prosthesis teeth or natural or non-natural teeth on opposite jaw as pressure occurring during chewing is absorbed.

Another purpose of the invention is to prevent bone resorption since no pressure occurs on bone surface contacting implant because flexibility is same as flexibility of bone.

A further purpose of the invention is to eliminate screw loosening occurring between implant and abutment. Another purpose of the invention is to provide a natural bond when contacting blood because of its biocompatibility.

The structural and characteristic features and all advantages of the invention will be understood better in the figures given below and the detailed description by reference to the figures. Therefore, the assessment should be made based on the figures and the detailed descriptions.

Brief Description of Figures

Figure 1 , shows two-dimensional front view of dental implant disclosed under invention.

Figure 2, shows cross-sectional front view of dental implant disclosed under invention.

Figure 3, shows two-dimensional view of dental implant with abutment disclosed under invention.

Reference Numbers

10. Dental implant 15. Hole

11. On-bone part 16. Blood cavity 12. Grooves 17. Screw part

13. PEEK coating 18. Frame

14. Screwing space 20. Implant abutment Detailed Description of the Invention

Embodiment principle:

Dental implant (10) consists of on-bone part (1 1 ), grooves (12), PEEK coating (13), screwing space (14), hole (15), blood cavity (16), screw part (17) and frame (18).

Implant abutment (20) can be mounted on the embodiment as well as can be manufactured uniformly with dental implant (10).

On bone part (1 1 ) is upper part of general embodiment and after this part is part remaining above after it placed in tooth root of dental implant (10). There is no separation risk since there will be no bacteria migration along dental implant (10) surface because it provides very good connection to PEEK coating (13).

Grooves (12) are formed longitudinally along side surface of the dental implant (10) and are 30 degrees upward slope extensions. After placement in tooth root, it somehow provides resistant placement of embodiment.

PEEK coating (13) is one of components of the invention and is the part having biocompatibility with bone and forming outer surface of dental implant (10). The term PEEK is abbreviation of polyetheretherketone and is a material with ceramic added or not. In the invention, PEEK material (13) is reinforced with ceramic and provides advantages for user when compared to the prior art.

Screwing space (14) is a space through which the screw used to connect upper part of implant abutment (20) of two-part design connected to dental implant (10). Figure 2 is cross- sectional view of the dental implant (10) and shows screwing space (14) in inner section and the frame (18) structure.

Hole (15) is the space formed in inner sections of PEEK coating (13) and providing blood filing inside.

Blood cavity (16) is the path for blood flowing. Figure 1 is an external view of the dental implant (10). It shows on bone section (1 1 ) and grooves (12) where implant abutment (20) is fixed.

Screw section (17) is the part located in the very bottom part of the dental implant (10) and facilitates placement onto bone and Osseo integration.

The frame (18) is the centre of main embodiment formed longitudinally in a manner blood cavity (16) and screw space (14) are and around of which covered by PEEK coating (13). It is made from metal material. Implant abutment (20) is the interconnection member allowing fixing on upper part of the dental implant (10) later or providing fixing prosthesis tooth which can be produced uniformly. Figure 3 is two-dimension view of dental implant (10) with implant abutment (20). As shown in Figure 4, the implant abutment (20) can also be fixed at various angles. Principle of Production:

Production of the dental implant (10) is started with forming frame firstly. The frame (18) is produced as it consists of blood cavity located therein longitudinally and screw space (14) in the blood cavity (16).

Then PEEK coating (13) is made onto the frame (18). When putting PEEK coating (13), the holes (15) in inner sides provides flow of blood in veins into blood cavity (16).

When forming the PEEK coating (13) grooves (12) are formed in such manner that outer surface faces upward at 30 degrees slope.

The upper part of the embodiment has implant abutment (20) where prosthesis teeth will be fixed to the dental implant (10) by use of screw space (14). Principle of Usage:

The dental implant (10), produced as described under principle of production, is placed onto jaw bone where prosthesis tooth will be fixed. Grooves (12) provide exact placement of embodiment to tooth root.

After placement, implant abutment (20) on-bone part (1 1 ) is placed on dental implant (10) and fixed to the dental implant (10) from screw space (14).

Then prosthesis tooth is inserted to implant abutment (20) and fixing prosthesis tooth is completed. Prosthesis tooth is fixed to the implant abutment (20) inside mouth or outside mouth by use of glue materials of various types. The implant abutment (20) is also fixed to connection screw dental implant (10). In dental implants (10) produced as one single part, prosthesis tooth is fixed directly to the implant abutment (20).

Since PEEK coating (13) is produced from biocompatible material of flexibility too close to bone, it provides fast mixing with bone and prevents damages caused by pressure to occur during chewing.

Claims

1. A dental implant (10) placed onto tooth root and consisting of a frame (18) forming inner section of the embodiment; screwing space (14) formed inside said frame (18) and where embodiment is fixed to tooth root; an implant abutment (20) connected to said screwing space (14) from inner part; characterized by consisting of PEEK coating (13) made from PEEK material.

2. The dental implant (10) according to Claim 1 ; wherein said PEEK coating (13) is made from PEEK material reinforced by ceramic powder addition.

3. A dental implant (10) according to Claim 1 ; consisting of on-bone part (1 1 ) formed on said PEEK coating (13) and where implant abutment (20) is placed.

4. A dental implant (10) according to Claim 1 ; consisting of holes (15), formed on said PEEK coating (13), providing flow of blood into the dental implant (10),

5. A dental implant (10) according to Claim 1 ; consisting of a blood cavity (16) formed inside said frame (18) and into which blood enters from said holes (15).

6. A dental implant (10) according to Claim 1 ; consisting of grooves (12), formed on said

PEEK coating (13) longitudinally, providing full placement to tooth root and fixing the dental implant (10).