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Dr Sönke Harder

GDC No. 286727

Specialist in:
Specialist in prosthetics (dentures) and implantology, augmentation surgery, all-on-4™ procedures, aesthetic dentistry and Digital Smile Design®, periodontal plastic surgery.

My main areas of expertise include dental implantology with the associated field of bone regeneration surgery (bone augmentation) and dental prosthetics (dental prosthesis). As a certified specialist for implantology (DGI) and dental prosthetics (DGPro), I have been familiar with both fields for many years and have received comprehensive and continuous further training in these areas.

I have been working as a dentist for 15 years and have followed the progress in my specialist fields of prosthetics and implantology with great interest. In addition to my clinical work in practice, I actively contribute to the further development of these fields as a private lecturer and scientist at the Kiel University Hospital. A large number of publications in international specialist journals, successful participation in international research competitions and, last but not least, admission to the team of authors of the latest standard textbook for implant prosthetics together with Prof. Stefan Wolfart, Prof. Stefan Reich and Prof. Irena Sailer bear witness to this. In addition to teaching the future generation of dentists at university, I share my knowledge and experience in my lectures at home and abroad.

Languages: English and German


Higher education and postgraduate specialisation for PD Dr med. dent. Sönke Harder

1998–2004Kiel University, Germany
2005PhD studies at Kiel University, Germany
2005Training assistant at an independent dental practice, Hamburg, Germany
2005-2008Research assistant at the Clinic for Prosthetics at Kiel University (CAU) as well as the Dental Prosthetics Polyclinic at Ludwig Maximilian University of Munich (LMU).
2008-2010Consultant, Clinic for Dental Prosthetics at Kiel University
Since 2010External employee of Kiel University
2013PhD in Dentistry at Kiel University, appointment as private lecturer

Continuous professional development

2008Prosthetics specialist of the German Association for Prosthetic Dentistry and Biological Material (DGPro, formerly DGZPW)
2008Implantology specialist of the German Association for Implantology (DGI)
2009Verifying dentist for drug trials (Charité teaching hospital, Berlin, Germany)
2009Advanced specialisation in radiation protection in digital volume tomography (DVT) for 3D skull diagnostics and navigated implantation planning


Clinical research at Kiel University in implantology and prosthetic dentistry

Lecturer for postgraduate education within the framework of the implantology curriculum of the German Association for Implantology (DGI)

Speaker at national and international conferences

Specialist author in the areas of prosthetic dentistry and implantology

Member of the editorial board of the German-language trade magazine “Implantologie”

Member of the review board of the international trade magazine "Clinical Implant dentistry And Related Research"


Member of the International Association of Dental Research (IADR), the German Association for Prosthetic Dentistry and Biological Materials (DGPro), the German Association for Implantology (DGI), the Academy for Practice and Science (APW), and the German Association for Dental, Oral, and Maxillo-Facial Surgery (DGZMK)


  1. Naujokat H, Schulz L, Harder S, Wiltfang J, Flörke C, Acil Y (2018) Surface modification with cold argon plasma and its effect on osseointegration of dental implants in miniature pigs. Clin Oral Implants Res under review:
  2. Harder S, Egert C, Freitag-Wolf S, Mehl C, Kern M (2018) Intraosseous Temperature Changes During Implant Site Preparation: In Vitro Comparison of Thermocouples and Infrared Thermography . Int J Oral Maxillofac Implants 33: 72-78. 10.11607 / jomi.6222
  3. Harder S (2018) Transalveolar Augmentation in the Posterior Maxilla - Update to the Internal Sinus Lift . Implantology in press:
  4. Mehl C, Kern M, Zimmermann A, Harder S, Huth S, Selhuber-Unkel C (2017) Impact of Cleaning Procedures on Adhesion of Living Cells to Three Abutment Materials . Int J Oral Maxillofac Implants 32: 976-984. 10.11607 / jomi.5630
  5. Flour C, Harder S (2017) On dealing with anxiety patients . Quintessence TEam-Journal 47: 623-624.
  6. Mehl C, Ali S, El Bahra S, Harder S, Vollrath O, Kern M (2016) Is There a Correlation Between Tensile Strength and Retrievability of Cemented Implant-Retained Crowns Using Artificial Aging? Int J Prosthodont 29: 83-90. 10.11607 / ijp.4317
  7. Steinebrunner L, Harder S, Wolfart S, Freitag-Wolf S, Kern M (2015) The Precision of Mechanical Torque Wrenches Used for Implants in Dental Offices . Int J Prosthodont 28: 527-30. 10.11607 / ijp.4281
  8. Mehl CJ, Harder S, Wolfart S, Vollrath O, Trinkler A, Wenz HJ, Kern M (2015) Influence of dental education on esthetic perception . Int J Esthet Dent 10: 486-99.
  9. Mehl C, Harder S, Lin J, Vollrath O, Kern M (2015) Perception of dental esthetics: influence of restoration type, symmetry, and color in four different countries . Int J Prosthodont 28: 60-4. 10.11607 / ijp.4005
  10. Wolfart S, Harder S, Reich S, Sailer I, implant prosthetics - a patient-oriented concept . 2014, Quintessenz Verlags GmbH.
  11. Harder S (2014) Fixed implant prosthetics: all-ceramic? - a practical concept, its strengths and limitations . Dtsch Zahnärztl Z 69: 315-325.
  12. Mehl C, Harder S, Steiner M, Vollrath O, Kern M (2013) Influence of cement film thickness on the retention of implant-retained crowns . J Prosthodont 22: 618-25. 10.1111 / jopr.12058
  13. Mehl C, Becker ST, Acil Y, Harder S, Wiltfang J, Dabbagh-Afrouz AA, de Buhr W, Kern M (2013) Impact of vertical loading on the implant-bone interface . Clin Oral Implants Res 24: 949-56. 10.1111 / j.1600-0501.2012.02487.x
  14. Harder S, Podschun R, Grancicova L, Mehl C, Kern M (2013) Analysis of the intraimplant microflora of two-piece dental implants . Clin Oral Investig 17: 1135-42. 10.1007 / s00784-012-0805-2
  15. Harder S, Egert C, Wenz HJ, Jochens A, Kern M (2013) Influence of the drill material and method of cooling on the development of intrabony temperature during preparation of the site of an implant . Br J Oral Maxillofac Surg 51: 74-8. 10.1016 / j.bjoms.2012.02.003
  16. Quabius ES, Ossenkop L, Harder S, Kern M (2012) Dental implants stimulate expression of Interleukin-8 and its receptor in human blood - an in vitro approach . J Biomed Mater Res B Appl Biomater 100: 1283-8. 10.1002 / jbm.b.32693
  17. Mehl C, Harder S, Shahriari A, Steiner M, Kern M (2012) Influence of abutment height and thermocycling on retrievability of cemented implant-supported crowns . Int J Oral Maxillofac Implants 27: 1106-15.
  18. Mehl C, Harder S, Byrne A, Kern M (2012) Prosthodontics in digital times - a case report Quintessence Int (Manuscript ID 5996 accepted for publication):
  19. Harder S, Quabius ES, Ossenkop L, Mehl C, Kern M (2012) Surface contamination of dental implants assessed by gene expression analysis in a whole-blood in vitro assay. A preliminary study . J Clin Periodontol 10.1111 / j.1600-051X.2012.01929.x
  20. Harder S, Quabius ES, Ossenkop L, Kern M (2012) Assessment of lipopolysaccharide microleakage at conical implant-abutment connections . Clin Oral Investig 16: 1377-84. 10.1007 / s00784-011-0646-4
  21. Birkenfeld F, Becker ME, Harder S, Lucius R, Kern M (2012) Increased intraosseous temperature caused by ultrasonic devices during bone surgery and the influences of working pressure and cooling irrigation . Int J Oral Maxillofac Implants 27: 1382-8.
  22. Stenger BJ, Harder S, Kern M (2011) Responsiveness of vital and endodontically treated teeth to loading . J Dent Res 90: Abstr No 492. 
  23. Ossenkop L, Harder S, Quabius ES, Kern M (2011) Surface pyrogen contamination of commercial dental implants . J Dent Res 90: Abstr No 3412. 
  24. Mehl CJ, Harder S, Kern M, Wolfart S (2011) Patients 'and dentists' perception of dental appearance . Clin Oral Invest 15: 193-9. 10.1007 / s00784-010-0393-y
  25. Flour C, SH, DS, MS, OV, MK (2011) In vitro influence of ultrasonic stress, removal force preload and thermocycling on the retrievability of implant-retained crowns. , Clin Oral Implants Res 23 : 930-7.
  26. Harder S, Quabius ES, Ossenkop L, Kern M (2011) Assessment of lipopolysaccharide microleakage at conical implant-abutment connections . Clin Oral Investig 10.1007 / s00784-011-0646-4
  27. Harder S, Podschun R, Grancicova L, Cassens M, Kern M (2011) Evaluation of intraimplant bacteria contamination of two stage implants . J Dent Res 90: Abstr No 3415. 
  28. Egert C, Harder S, Steiner M, Wenz HJ, Kern M (2011) Intraosseous temperature development during implant site preparation using different burs J Dent Res 90: Abstr No 3404. 
  29. Kern M, Harder S, Wolfart S (2010) Better one than none. The central single implant in the edentulous lower jaw of older patients . Zahnärztl Mitt 100: 2404-2408.
  30. Kern M, Harder S (2010) Antimicrobial filling of implant cavities . J Prosthet Dent 103: 321-322. S0022-3913 (10) 60067-4 [pii] 10.1016 / S0022-3913 (10) 60067-4
  31. Harder S, Wolfart S, Eschbach S, Kern M (2010) Eight-year outcome of posterior inlay-retained all-ceramic fixed dental prostheses . J Dent 38: 875-881. S0300-5712 (10) 00194-6 [pii] 10.1016 / j.jdent.2010.07.012
  32. Harder S, Flour C, Kern M (2010) Treatment options for deeply fractured abutment teeth . Quintessence 61: 1485-1494.
  33. Harder S, Kern M (2010) Temporary Restoration and Soft Tissue Conditioning - Before and After Single Tooth Implantation . Implantol 18: 407-416.
  34. Harder S, Dimaczek B, Acil Y, Terheyden H, Freitag-Wolf S, Kern M (2010) Molecular leakage at implant-abutment connection-in vitro investigation of tightness of internal conical implant-abutment connections against endotoxin penetration . Clin Oral Invest 14: 427-432. 10.1007 / s00784-009-0317-x
  35. Birkenfeld F, Becker ME, Kurz B, Harder S, Kern M, Lucius R (2010) Changes in human mandibular bone morphology after heat application . Ann Anat 192: 227-231. S0940-9602 (10) 00083-X [pii] 10.1016 / j.aanat.2010.06.001
  36. Wolfart S, Harder S, Eschbach S, Lehmann F, Kern M (2009) Four-year clinical results of fixed dental prostheses with zirconia substructures (Cercon): end abutments vs. cantilever design . Eur J Oral Sci 117: 741-9. EOS693 [pii] 10.1111 / j.1600-0722.2009.00693.x
  37. Harder S, Wolfart S, Mehl C, Kern M (2009) Performance of ultrasound devices in bone surgery and the associated temperature development in the bone . Implantol 17: 305-313.
  38. Harder S, Wolfart S, Mehl C, Kern M (2009) Performance of ultrasonic devices for bone surgery and associated intraosseous temperature development . Int J Oral Maxillofac Implants 24: 484-90.
  39. Harder S, Wolfart S, Eschbach S, Kern M (2009) Outcome of posterior all-ceramic inlay-retained fixed dental prostheses . J Dent Res 88: Abstr No 1638. 
  40. Harder S, Wiltfang J, Kern M (2009) Prosthetic treatment of distal free end situations with dental implants to avoid removable dentures . Quintessence 60: 1305-1318.
  41. Harder S, Kern M (2009) Survival and complications of computer aided-designing and computer-aided manufacturing vs. conventionally fabricated implant-supported reconstructions: a systematic review . Clin Oral Implants Res 20 Suppl 4: 48-54. CLR1778 [pii] 10.1111 / j.1600-0501.2009.01778.x
  42. Harder S, Dimaczek B, Acil Y, Terheyden H, Freitag-Wolf S, Kern M (2009) Molecular leakage at implant-abutment connection - in vitro investigation of tightness of internal conical implant-abutment connections against endotoxin penetration . Clin Oral Investig 14: 427-32. 10.1007 / s00784-009-0317-x
  43. Wolfart S, Harder S, Eschbach S, Kern M (2008) Outcome of posterior FPDs of veneered zirconia ceramic (Cercon) . J Dent Res 86: Abstr No 576. 
  44. Mehl C, Harder S, Wolfart M, Kern M, Wolfart S (2008) Retrievability of implant-retained crowns following cementation . Clin Oral Implants Res 19: 1304-1311. CLR1587 [pii] 10.1111 / j.1600-0501.2008.01587.x
  45. Harder S, Wolfart S, Ludwig K, Möller R, Steiner M, Kern M (2007) Bone cutting performance of ultrasonic devices and associated temperature development . J Dent Res 86: Abstr No 2914. 
  46. Harder S, Wolfart S, Kern M (2006) Use of a mobile voting system as part of a course in the implantology curriculum . Z Zahnärztl Implantol 22: F68-72.

Lectures and Awards

Dr. Harder is a regular member of the team of speakers at Camlog Biotechnologies GmbH and Biomet 3i GmbH.

  • 2018 Z-Arena Salzburg, Austria "Vaporizing Brick and Mortar - Influence of digitization on dentistry"
  • 2018 Z-Arena Salzburg, Austria "Dental materials in the 21st century"
  • 2018 Nobel Biocare Symposium Dresden "Implantology in the 21st Century"
  • 2018 BDO Symposium Berlin "Immediate implantological restorations - standard or risk?"
  • 2018 Oral Reconstruction Global Symposium, “The Conelog Implant System Step-by-step”, Rotterdam, Netherlands
  • 2017 Moscow Meeting of Esthetic Dentistry, “Immediat Implant Restorations”, Moscow, CIS
  • 2017 Nobel Biocare summit, "How All-on-four® can change the life of your patients", Saalfelden, Austria
  • 2017 Dental Summer, The All-on-four® concept in daily practice ”, Timmendorfer Strand
  • 2016 Annual Congress of the German Society for Implantology (DGI), "Cementless Implant Prosthetics" and "Immediate Loading of Dental Implants", Hamburg
  • 2016 Academy of Practice and Science "Training course implantology intensive", Munich
  • 2015 2nd Hamburg Forum for Innovative Implantology, Hamburg: "Biology or Mechanics - How can we influence peri-implant bone preservation?"
  • 2015 Curriculum Implantology of the DGMKG Düsseldorf, "Classic and Modern - Planning and Treatment Concepts in Implant Prosthetics"
  • 2015 Freiburg Forum for Innovative Implantology, Freiburg, "Implant Prosthetics"
  • 2012 4th International Camlog Congress, Lucerne, Switzerland
  • 2012 6th German Meisinger Bone Management Symposium at the University of Witten / Herdecke
  • 2011 89th General Session & Exhibition of the IADR, San Diego, Calif., USA
  • 2011 Camlog International Expert Meeting - Venice, Italy
  • 2010 Dental Technology, Stuttgart
  • 2010 3rd International Camlog Congress, Stuttgart
  • 2009 87th General Session & Exhibition of the IADR, Miami, Fla., USA
  • 2008 DGI Annual Meeting, Frankfurt
  • 2008 4th Meeting of the IADR Pan European Federation, London, United Kingdom
  • 2007 85th General Session & Exhibition of the IADR, New Orleans, La., USA

For his scientific work in the field of dental implantology, PD Dr. Harder has received multiple awards.

  • 2008
    Prize of the German Society for Implantology (DGI) Dr. Harder
  • 2010
    Prize of the German Society for Dental Implantology (DGZI) Dr. Harder
  • 2011
    Camlog Research Award
  • 2014
    Chair of the scientific meeting of the DGPro conference in Aachen
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Lecturer of the Academy of Practice and Science

Implantologist certified by the German Society for Implantology (DGI)

Specialist certified by the General Dental Council and the German Society of Dental Prosthetic and Dental Material

Fellow of the Royal Society of Medicine

Registered Specialist with the General Dental Council

University lecturer at the Christian-Albrechts-University, Kiel, Germany

All-on-4® Competence Center 2019/2020

Certified training centre for Implantology (DGI)

European Association for Osseointegration

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