Single mandibular implant study - chewing efficiency - 5-year results from a randomized clinical trial using two different implant loading protocols

Publikation: Beitrag in FachzeitschriftForschungsartikelBeigetragenBegutachtung


  • Nicole Passia - , Poliklinik für Zahnärztliche Prothetik, Christian-Albrechts-Universität zu Kiel (CAU), Universitätsklinikum Carl Gustav Carus Dresden (Autor:in)
  • Shurouk Ali - , Christian-Albrechts-Universität zu Kiel (CAU) (Autor:in)
  • Christoph Behrendt - , Universitätsklinikum Greifswald (Autor:in)
  • Elfriede Fritzer - , Christian-Albrechts-Universität zu Kiel (CAU) (Autor:in)
  • Ralf Joachim Kohal - , MSH Medical School Hamburg (Autor:in)
  • Ralph G Luthardt - , Universitätsklinikum Ulm (Autor:in)
  • Nadine Frfr Maltzahn - , University Hospital Hannover (Autor:in)
  • Michael Rädel - , Poliklinik für Zahnärztliche Prothetik, Universitätsklinikum Carl Gustav Carus Dresden (Autor:in)
  • Daniel R Reissmann - , Universitätsklinikum Hamburg-Eppendorf (UKE) (Autor:in)
  • Franz Sebastian Schwindling - , Universitätsklinikum Heidelberg (Autor:in)
  • Stefan Wolfart - , Universitätsklinikum Aachen (Autor:in)
  • Matthias Kern - , Christian-Albrechts-Universität zu Kiel (CAU) (Autor:in)


Purpose: To investigate the chewing efficiency of edentulous patients wearing complete dentures, treated with a single implant in the mandible, placed underneath the existing mandibular dentures, using two different loading protocols (immediate loading or conventional loading), over an observation period of 5 years. Methods: One-hundred and fifty-eight (158) edentulous seniors aged 60-89 years received an implant in the midline of the lower jaw and were randomized either to the immediate loaded group A (n=81) or the conventional loaded group B (n=77). Chewing efficiency was obtained before treatment, one month after implant placement during the submerged healing phase (only group B) and 1, 4, 12, 24 and 60 months after implant loading. Results: After 5 years, chewing tests from 89 patients (45 in the immediate loading group and 44 in the conventional loading group) were available for every recall visit and thus statistically analyzed. The chewing efficiency increased over time in both groups. A significant increase was observed up to 4 months after loading (p≤0.05). Later, chewing efficiency further increased, but not significantly. Between the two loading protocols, chewing efficiency did not differ significantly (p>0.05) at any follow-up investigation. Conclusion: A single mandibular implant placed underneath existing mandibular dentures improves chewing efficiency of edentulous patients significantly over an observation period of 5 years, irrespective of the loading protocol.


Seiten (von - bis)610-617
FachzeitschriftJournal of prosthodontic research
PublikationsstatusVeröffentlicht - 7 Okt. 2022

Externe IDs

Scopus 85139514171
ORCID /0000-0002-3548-9462/work/142247456
ORCID /0000-0001-5859-2318/work/142254190



  • Dental Implants, Dental Prosthesis, Implant-Supported, Denture, Overlay, Immediate Dental Implant Loading, Mandible/surgery, Mastication, Randomized Controlled Trials as Topic, Treatment Outcome