sistemul de implanturi dentare ARDS - ISRAEL.
www.ardsimplant.ro Tel/Fax 031 434 88 11 /10 Mobil 0733 10 93 93 / 0722 75 02 18 E-mail: firstname.lastname@example.org Str. Visinilor, nr.19, sector 2, Bucuresti, Romania
Company ProfileEstablished by Dr. Uri Arny in 1995, ARDS deals with the development, manufacturing and marketing of innovative dental implants. Dr. Arnys guiding philosophy of Minimum Drilling Maximum Primary Stability, has inspired him to develop a unique drilling technique which keeps bone damage to the minimum while maximizing primary stability. Combined with the introduction of the revolutionary Smart implant these principles have been fulfilled. Dr. Arny Uri Chairman & Medical Manager ARDS holds a number of international patents with regards to: The Smart implant design. ARDS drilling technique a simple, bone preserving drilling technique. The 3mm Smart Implant a unique one-stage implant designed for narrow ridges and thin crests. The main advantages for ARDS drilling technique and Smart implants are: Shorter healing process Saving 40% of the bone by reducing the amount of drilled bone. Immediate implant after extraction in almost every case Significantly shortening the process of bone-implant integration due to a unique design of the implant which increases bone-implant contact in the surgery phase (in comparison with conventional implants of the same diameter). Maximum primary stability ARDS drilling technique combined with the shape of the Smart implant results in the compression of the spongiosal bone around the apical part of the implant during its insertion. Thus, load forces are equally distributed along the entire implant and not only at its upper threads, as in common implants held only at the cortical bone. Implanting in problematic areas ARDS drilling technique enables precise control over the placement and shape of the bore hole. This is attainable by the use of leading pins which direct the drill at the correct angle throughout the process and stabilize it, also in narrow ridges or extraction sites. The result is a simple, user-friendly implant process, suited for every dentist.
External SurfaceOsseointegration is needed in order to create a durable stability of the implant in the bone. In order to intensify the osseointegration, the implants must go through a series of processes: The first process is blasting the implant, using adhesive particles containing Alumina, in order to create a rougher surface area. In general, cells adhere better onto rough surfaces and the deep pits created by the blasting procedure, act as retentive pockets for newly formed bone. The second process is the cleaning of the implants using a special technique to keep the Titanium in its original composition. This prevents foreign materials from being captured between the titanium surface and the bone. After the final cleaning of the Titanium, when in contact with the air, an oxidized layer of 50-2000 Ti-Oxide is being created on the implants surface. This layer is inert biologically and isolates the Titanium, defending it from further chemical reactions. Pure Titanium or alloy implants keep this layer without fraction or corrosion under physiological conditions. This thin layer will be the one that determines the implanttissue connection, and not the metal itself. This process prevents a situation where a fundamental change in the composition of material on the implants surface will change the BoneImplant connection.
Type of TitaniumARDS implants are composed of medical titanium alloy Ti-6 AL-4V which adheres to all manufacturing regulations. It is composed of 6% Aluminum which increases the strength of the material and of 4% Vanadium which cleans the residue of corrosion between the Aluminum and Titanium.
ManufacturingARDS managements main office is situated in Rishon-Le-Zion, Israel. Manufacturing and packaging supervised processes are carried out at ARDS production plant situated at Teffen industrial park, in the north of Israel. The plant retains a quality control system and regulations of the highest required level in accordance with the most stringent international standards.
Approval & CertificatesARDS is approved by ISO 9001, ISO 13485, of European body CE, Israeli AMAR and American FDA. X1000
Excellent approval for ARDS Implants from technical laboratories and NAMSA laboratory, U.S.A.Testing results - ARDS Implants
CorrosionThe test was performed by the Technion, Haifa - Test no. B/82454 The test examined the resistance of the material and its corrosion potential. The test was performed by immersing the implant in different chemicals, heating to 37 and submission to electrical currents.
BiocompatibilityThe test was performed by NAMSA laboratory in the United States. There were 3 tests done on laboratory mice Toxicity test - toxic potential of the implant Sensitivity test - sensitivity potential that could be caused by the implant Irritation test - potential irritations of the implant.
Results: Complete stability of the ARDS Implant - The implants are stable and have no corrosion potential.
Results: All three tests proved that the implant is biocompatible
Testing of the surface areaThe test was performed by the Technion, Haifa - Test no. B/83703 The test was performed by an electronic microscope (SEM), that is equipped with a system analysis of chemical elements (EDS). The test was performed by injecting a wet metallic acid on the surface area of the implant, and final cleaning by an organic acid.
Testing fatigueThe test was performed by the Technion, Haifa - Test no. B/83371 The test was performed on 3.75mm implants, 13mm in length. The implants were assembled with angulated abutments of 25 degrees. The implants were exposed to cyclic forces up to a fraction of one part. Testing was done in accordance with standards of ISO 14801 and the FDA regulations. Results: In the assembly and the implant there was NO damage at all. The only cracks formed were in the abutment screw to the level of 580 neuton, much more than required.
Results: No absorption of foreign materials on the surface area, and the observed elements stand up to the highest standards.
Hybrid Dual Thread Screw Implant Analytical and Experimental ResearchDr. Uri Arny, Ilan Weissberg M.Sc & Oved Gihon, Mechanical engineer. Introduction Experimental Method
As the popularity of using implants in dental restorative procedure gains momentum, there is a need to find innovative dental implant, which can effectively transfer the loads and provide the necessary stabilization into jawbone. This paper presents the development results of a novel implant with a Hybrid Dual Thread Screw as shown in Fig. 1. This approach allows obtaining a high reinforcement of the implant in the jawbone by a reduction of the drilling bone volume along with an additional gain of primary surface contact relatively to classical implants. To prove the concept, analytical models and experiment tests were carried out during the development of an implant with Hybrid Dual Thread Screw (HDTS). The analytical calculations are based on Finite Element Model, while the experiment tests were done on an artificial bone made of Fiberglass and Structural foam, which represents the bone mechanical properties. These unique experimental tests which have been chosen, since the clinical tests evaluations on animals are not efficient. The animal has different dental jaw structure and it requires a lot of time to get the results.
Force-displacement tests have been carried out on Classical Cylindrical Implant and HDTS implant both have diameter of 4.5 mm and 13 mm in length. The implants have been inserted in an artificial bone specimen shown in Fig. 2, the cross section dimensions of this specimen are of a typical mandible as is shown in Fig. 3. An axial load was applied onto the implant head until failure was reached. During the static tests the force-displacement curves were recorded and axial stiffness has been calculated.
Implant Artificial Cancellous Artificial Cortical
Fig. 2: Artificial Bone Specimen
HDTS Implant Description
The unique HDTS dental Implant, shown in Fig. 1, uses two different thread types, double thread thin grove at the implant interface area with the cortical bone and single thread thick groves at the cancellous. This unique design allows facilitating the transfer of occlusal forces to the greatest surface area of the bone-implant interface for favorable load distribution. Also it reduces the amount of bone removed by using a novel drilling procedure.Double Tread Thin Grove
Single Tread Thick Grove
Fig. 3: Artificial Bone Specimen Cross Section (Dimensions in mm>)
Figure 1: Hybrid Dual Tread Screw (HDTS) Implant
The experimental tests showed that the HDTS implant could carry higher axial load compared to classical cylinder implants, as shown in figure 4. It is also shown that HDTS implant has higher stiffness then the classical cylindrical implant. The stiffness of the implants is compatible with measured axial stiffness of 180 Kg/mm published in the literature for Branemark (7 mm) in trabecular bone. These results increase the reliability of the preformed experimental tests.
shear stress distribution in the cortical bone under an axial load of 40 Kg for the both type of implants.
Discussion & Conclusions
Finite Element Model (FEM) of an implant installed in a standard jawbone cross section has been built using NASTRAN FEM software. The aim of this study was to evaluate the influence of HDTS implant versus classical cylindrical implants on the stress intensity and stress distribution due to axial load. Two analytical models were built for t