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Spiros Zinelis


Phone: (+30) 210-746-1102
Email: szinelis[at]dent.uoa[dot]gr

Mailing Address:
2 Thivon Str, 115 27, Goudi, Athens, Greece

Ελληνική ΈκδοσηEnglish Version

Education / Qualifications

  • 1994: B. Eng. Mining and Metallurgical Engineer. National Technical University of Athens (NTUA), Department of Mining Engineering and Metallurgy. Division of Metallurgy and Materials Science, Athens, Greece.
  • 2001: PhD in Metallurgy and Materials Science, Title of the thesis: “ Development of Ti alloys for Biomedical applications”, National Technical University of Athens (NTUA), Department of Mining Engineering and Metallurgy, Athens, Greece.

Academic and professional positions held

  • March 2005-January 2009: Lecturer of Dental Biomaterials, Department of Biomaterials, School of Dentistry, NKUA, Greece.
  • January 2009-April 2013: Assistant Professor of Dental Materials, Department of Biomaterials, School of Dentistry, NKUA, Greece.
  • April 2013-September 2016: Assistant Professor in a tenure track appointment.
  • September 2016-December 2021: Associate Professor of Dental Materials, Department of Biomaterials, School of Dentistry, NKUA, Greece.
  • December 2021-today: Professor of Dental Materials, Department of Biomaterials, School of Dentistry, NKUA, Greece.

Academic and professional responsibilities

  • Teaching undergraduate and postgraduate courses.
  • Member of Curriculum Committee of School of Dentistry, University of Athens (2005-2008, 2010-2011)
  • Supervision of Master and Doctoral Thesis in Biomaterials field.

Research Grants and Contracts

  • 2002-2003: Scholarship from the National Foundation for Scholarship for postdoctoral research entitled: “Assessment of optimum surface roughness for metal-ceramic bond strength of representative dental alloys’.
  • 2011: Scholarship from DAAD (German Academic Exchange Service) for the research protocol entitled “Effect of surface roughening treatments on the electrochemical behavior of Ti surfaces for implant dentistry”. The experimental part of this project was carried out in Dental and Biomaterials Research Group under the guidance of Prof Mueller in “Charité” Medical University of Berlin in September-October 2011.

Awards and Honours

  • 1994: Award for distinguished undergraduate studies. Technical Chamber of Greece.
  • 2003: The research study entitled ‘Comparative study of the effect of in vitro and in vivo aging on morphology, microstructure and elemental composition of nickel-titanium orthodontic archwires’ by Zinelis S, Gioka C, Makou M and Eliades T. published in Hellenic Orthodontic Review (in English and Greek) (2003:6;45-58) won the first award in 2004 from the European Federation of Orthodontics (FEO). This award is presented to the best scientific research published in European Journals in the field of Orthodontics.
  • 2008: The research study entitled ‘‘Micro CT evaluation of the marginal fit of different In-Ceram alumina coping” presented in June 2008 in Madrid won the second prize from the European Academy of Esthetic Dentistry.
  • 2012: The research study entitled “Interfacial characterization of all-ceramic core materials with veneering porcelain” by Tagmatarchis A, Tripodakis AP, Filippatos G, Zinelis S and Eliades G. won the first prize in 5th EAED Scientific Research Award of European Academy of Esthetic Dentistry (ΕΑΕD). This completion was held in Cesme, Turkey in 2012 during the 26th conference of EAED.
  • 2015: The study “The effect of rheumatoid arthritis and functional loading on physical & mechanical properties of the mandibular condyle in a transgenic mouse model’ was prized by Houston Award, in 91st Conference of European Orthodontic Society, which held on Venice, Italy.


  • Fellow of Academy for Dental Materials
  • International Association for Dental Research(IADR)
  • American Society for Testing and Materials
  • American Society for Materials
  • Hellenic Society for Biomaterials
  • Technical Chamber of Greece

Research Theses - Books

  • Eliades T and Zinelis S. Biological Materials: Introduction to tissue mechanics Athens 2006 (ISBN: 960-399-454-5).
  • Eliades T and Zinelis S. English Greek Dictionary of Mechanical terms.

Research Theses

  • Doctoral thesis entitled ‘Development of Ti alloys for biomedical applications
  • Post Doctoral thesis entitled ‘Optimization of surface roughness of representative type of dental alloys to increase the metallo-ceramic bond strength’
  • Monograph entitled: ‘Elemental, morphological and electrochemical characterization of seven contemporary Ti implants’

Selected publications in scientific journals

  • Al Jabbari Y., Fournelle R., Al Taweel S., Zinelis S. Failure analysis of eleven Gates Glidden drills that fractured intraorally during post space preparation. A retrieval analysis study. Biomedizinische Technik (2018) 63:407-412.
  • Polychronis G., Al Jabbari Y., Eliades T., Zinelis S. Galvanic coupling of steel and gold alloy lingual brackets with orthodontic wires: Is corrosion a concern?. Angle Orthodontist (2018) 88:450-457.
  • Zinelis S., Al Jabbari Y. How Hedstrom files fail during clinical use? A retrieval study based on SEM, optical microscopy and micro-XCT analysis. Biomedizinische Technik (2018).
  • Ntasi A., Al Jabbari Y., Silikas N., Eliades T., Zinelis S. Multitechnique characterization of conventional and experimental Ag-based brazing alloys for orthodontic applications. Dental Materials (2018) 34:e25-e35.
  • Ioannidis A., Papageorgiou S., Sifakakis I., Zinelis S., Eliades G., Eliades T. Orthodontic bonding and debonding induces structural changes but does not alter the mechanical properties of enamel. Progress in Orthodontics (2018) 19:
  • Sifakakis I., Zinelis S., Eliades G., Koletsi D., Eliades T. Enamel gloss changes induced by orthodontic bonding. Journal of Orthodontics (2018) 45:269-274.
  • Dimitriadi M., Panagiotopoulou A., Pelecanou M., Yannakopoulou K., Eliades G. Stability and reactivity of γ-ΜPTMS silane in some commercial primer and adhesive formulations. Dental Materials (2018) 34:1089-1101.
  • Zinelis S., Pandis N., Al Jabbari Y., Eliades G., Eliades T. Does long-term intraoral service affect the mechanical properties and elemental composition of multistranded wires of lingual fixed retainers?. European Journal of Orthodontics (2018) 40:126-131.
  • Krokidis A., Bonfanti C., Cerutti A., Barabanti N., Zinelis S., Panopoulos P. Comparative analysis of SAF, Protaper Next and BT-Race in eliminating Enterococcus faecalis from long oval canals: An ex vivo study. Australian Endodontic Journal (2017) 43:110-114. doi: 10.1111/aej.12177 Scopus ID: 84995947048
  • Gaintantzopoulou M., Gopinath V., Zinelis S. Evaluation of cavity wall adaptation of bulk esthetic materials to restore class II cavities in primary molars. Clinical Oral Investigations (2017) 21:1063-1070.

Areas of scientific interest

  • Characterization of biomaterials with modern analytical techniques.
  • Research for in vivo aging mechanisms of biomaterials based on retrieval analysis.
  • Development of novel materials for biomedical applications.

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