Metals as Biomaterials

  • Vasif Hasirci
  • Nesrin Hasirci


Metals are generally hard, opaque, shiny, malleable, ductile, and conductive materials. Organization of the atoms in solid metals is generally close-packed surrounded by others, having crystal structures as body-centered cubic (bcc), face-centered cubic (fcc), or hexagonal close-packed (hcp). Outer shell electrons are delocalized and free to move and form a kind of cloud around atoms. Meanwhile atoms stay together due to the electrostatic interactions created among each other. This kind of bond is named as metallic bond. Since the outer shell electrons are not strongly bonded to the total structure, metals can easily loose them in chemical reactions and form cations. Electrostatic interactions among cations and anions form salts which are soluble in aqueous media. Metals can form alloys by mixing them with other metallic elements at the molecular level. The main purpose of forming alloys is to enhance some properties of the metal such as make it less brittle, harder, and more resistant to corrosion or have a more desirable color and luster. Metals have several properties that are specific to them, including malleability, which allows the shaping of metal into implants, and ductility, which refers to the ability to draw out metal in the shape of wire and is an important property in allowing the manufacture of intramedullary rods, screws, and long stems.


  1. 1.
    Hothi HS, Ilo K, Whittaker RK, Eskelinen A, Skinner JA, Hart AJ (2015) Corrosion of metal modular cup liners. J Arthroplast 30(9):1652–1656CrossRefGoogle Scholar
  2. 2.
    Chen Q, Thouas GA (2015) Metallic implant biomaterials. Mater Sci Eng R Rep 87:1–57CrossRefGoogle Scholar
  3. 3.
    Ma PS, Brudvik JS (2008) Managing the maxillary partially edentulous patient with extensive anterior tooth loss and advanced periodontal disease using a removable partial denture: a clinical report. J Prosthet Dent 100(4):259–263CrossRefGoogle Scholar
  4. 4.
    Liu Y, Bao C, Wismeijer D, Wu G (2015) The physicochemical/biological properties of porous tantalum and the potential surface modification techniques to improve its clinical application in dental implantology. Mater Sci Eng C 49:323–329CrossRefGoogle Scholar
  5. 5.
    Choong YYC, Maleksaeedi S, Eng H, Wei J, Su PC (2017) 4D printing of high performance shape memory polymer using stereolithography. Mater Des 126:219–225CrossRefGoogle Scholar
  6. 6.
    Izquierdo PP, de Biasi RS, Elias CN, Nojima LI (2010) Martensitic transformation of austenitic stainless steel orthodontic wires during intraoral exposure. Am J Orthod Dentofac Orthop 138(6):714.e1–714.e5Google Scholar
  7. 7.
    Ohara AT (2016) Clinical importance of austenitic final point in the selection of nickel-titanium alloys for application in orthodonticuse arches. Rev Odontológica Mex 20(3):e162–e169CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • Vasif Hasirci
    • 1
  • Nesrin Hasirci
    • 2
  1. 1.BIOMATEN Center of Excellence in Biomaterials and Tissue Engineering, and Department of Biological SciencesMiddle East Technical UniversityAnkaraTurkey
  2. 2.BIOMATEN Center of Excellence in Biomaterials and Tissue Engineering, and Department of ChemistryMiddle East Technical UniversityAnkaraTurkey

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