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Institute of Metallurgy and Materials Science of the Polish

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Presentation on theme: "Institute of Metallurgy and Materials Science of the Polish"— Presentation transcript:

1 Institute of Metallurgy and Materials Science of the Polish
BIOMATERIALS J. Dutkiewicz Institute of Metallurgy and Materials Science of the Polish Academy of Sciences What is biomateriał ? Źródło: Kay C Dee, David A. Puleo, Rena Bizios: An introduction to tissue-biomaterial interactions, John Wiley and Sons, New Jersey, 2002 Biomaterial– a substance other than medicament manufactured from natural or synthetic components which is intended to substitute organ or tissue or part of it to take over its function.

2 Biomaterials industry
year 1987 4,7 mld $ Year 2002 11,7 mld $ Natural materials 5,7 % Composites 18 % Materials Natural 6,3 % Metals 29,9 % Metals 44,5 % Polymers 47,1 % Ceramics 2,9 % Polymers 42,8 % Composites 0,0 % Ceramics 2,8 %

3 Safe only for certain period Biotolerance
Polarization resistence (Ω/cm2) Biotolerance 3 4 7 5 9 6 8 Neutral Stopy Ti Toxic Safe only for certain period Stal AISI 316L CoCrNiMo Corrosion resistence w zależności in relation of tissue reaction for various materials

4 Kość i zastąpienie kości

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10 Metallic Biomaterials in reconstruction surgery
steels Cr-Ni-Mo alloys Co-Cr-Mo, Co-Ni-Cr-Mo, Co-Cr-Ni-Mo-Fe Ti i jego stopy: Ti-6Al-4V, Ti-6Al-(4-9)Nb, Ti-6Al-(3-6)Nb-(1-6)Ta, Ti-12Mo-6Zr-2Fe, Ti-15Mo-3Nb, Ti-15Mo-5Zr-3Al, Ti-Zr-4Nb-2Ta-0,2Pd, Ti-15Sn-4Nb-2Ta-0,2Pd, Ti-13Nb-13Zr, Ni-Ti shape memory alloys alloys Nb i Ta Noble metals Au, Ag, Pd

11 Mechanical poroperties of titanium
Examles of application of titanium in surgery Płytka rekonstrukcyjna blokowana Płytka ramienna blokowana Płytki szyjne

12 Examples of application of Ti6Al4V in surgery
Implanty zastępujące krążki międzykręgowe „Cage” Śruby transpedikularne do stabilizacji kręgosłupa Implanty zastępujące kręgi

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14 X-ray image of back bone with avisible shift of vertebras , causing oppress on nerves and pain of the pacient.. Operation is based on stiffening of vertebras with titanium support constructiion regulating distance of vertebras eliminating oppression of nerves.

15 Dental Implants & Superstructures
Coated / uncoated

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17 Nitinol • NIckel-TItanium-
at composition 50 :50 with a possible application of superelasticity in dental orthodontic medicine Predetermined Shape of matrix

18 Orthodontic Applications

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20 “Stents”

21 In stomatological practice
Bioneutral ceramic materials In stomatological practice Monolitic ceramics base on Al2O3 -Al2O3: bioneutral material minimal chemical changes in contact with tissue and organism fluids brittless and low toughness (improvement possible by additions of 1 m; ZrO2 [4]) Typical bioceramic elements: alumina dental implants of cerasiv GmbH

22 "Dyract® AP offers the restorative potential to fulfil most applications of traditional glass ionomer restorative and composite resins .. " Compomers cavities etch adhesive compomer placed setting

23 Bio-active ceramic materials
: bioglasses sodium-calcium (Na2O-CaO-SiO2-P2O5) [8] sintered hydroxyapatite (Ca10(PO4)6(OH)2) [9,10] -calcium phosphite(Ca3(PO4)2) [11] two phase ceramic hydroksyapatite-calcium phosphate crystalline oxyfluoroapatite (Ca10(PO4)6(O,F2) vollastonite (CaO.SiO2) in a glass matrixMgO-CaO-SiO2 [13] Due to a poor mechanical properties of hydroxyapatite, most popular are layers on ceramic or metallic substratres

24 Apatite Ca5X(PO4)3 X = F, Cl, OH hexagonal, rod like crystals,
Colour: colorless, sometimes yellow, blue, red shiny Rysa: biała Hardness : 5,0 – in Mohs scale density: 3,16 - 3,22 g cm-3

25 Root Canal Sealers Materials from cements to resins have been used
Cytotoxic & tissue irritating potency: Zinc oxide – eugenol in longest use Epoxy resin based Sealers containing a small % of paraformaldehyde to kill bacteria & fix remaining pulp tissue. Biocompatible alternatives: Calcium hydroxide based to promote tissue repair at the apex. Mineral trioxide aggregate (MTA) biocompatible antiseptic non-soluble adhesive slow setting radiopaque dimensionally stable removable if required achieves a good seal


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