A proof of concept on implant-supported bilateral cantilever bridges: The T-Bridge approach


  • Kelvin I. Afrashtehfar Evidence Based Practice Unit, College of Dentistry, Ajman University, Ajman City, UAE; Department of Reconstructive Dentistry and Gerodontology, School of Dental Medicine, University of Bern, Berne, Switzerland; Division of Periodontal and Periimplantitis Sciences, Clinic of Conservative and Preventive Dentistry, Center of Dental Medicine, University of Zurich, Zurich, Switzerland; Private Practice Limited to Implant Dentistry, Richmond, Canada; Private Practice Limited to Prosthodontics, Abu Dhabi, UAE
  • Bogna Stawarczyk Department of Prosthodontics, Ludwig-Maximilians-University, Munich, Germany
  • Danka Micovic Soldatovic Department of Prosthodontics, Ludwig-Maximilians-University, Munich, Germany
  • Patrick R. Schmidlin Division of Periodontal and Periimplantitis Sciences, Clinic of Conservative and Preventive Dentistry, Center of Dental Medicine, University of Zurich, Zurich, Switzerland






Biomechanical phenomena, Dental prosthesis design, Fixed dental prosthesis, Dental stress analysis, Implant-supported dental prosthesis


The concept of bilateral cantilevers on a single central implant (T-design) for three-unit implant-supported fixed dental prostheses (ISFDPs) has not been explored nor tested. This technical hypothesis aimed to explore the feasibility of such an approach as a cost-effective alternative to conventional treatments. Careful considerations regarding implant diameter, length, ideal position, occlusal scheme, and bone remodeling are essential to ensure adequate support, stability, and prevention of complications. In this proof of concept, we present a preliminary case with this novel design to replace missing posterior teeth in a patient with narrow bone conditions. In addition, a series of planned investigations and preliminary results, including preclinical studies, are presented to illustrate our concept and its potential clinical implications. Clinically, after two-year follow-up, healthy and stable peri-implant tissues around the ISFDP exemplarily demonstrated excellent stability, functionality, and comfort, which is supported by acceptable fracture resistance data in vitro, suggesting indeed the practical potential and suitability. Thus, we claim that such a treatment modality has the at least theoretical potential to revolutionize implant dentistry by providing innovative and cost-effective treatment options for patients with partial ISFDPs in very specific cases. Of course, further research and evaluations are necessary to validate the clinical implications of this innovative hypothesis. Implementing the 3-on-1 T-bridge approach in partial ISFDPs could offer a promising alternative to traditional methods. If proven successful, this technique may lead to significant advancements in clinical practice, providing a less invasive cost-effective treatment option.


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How to Cite

Afrashtehfar, K. I., Stawarczyk, B., Micovic Soldatovic, D., & Schmidlin, P. R. (2024). A proof of concept on implant-supported bilateral cantilever bridges: The T-Bridge approach. SWISS DENTAL JOURNAL SSO – Science and Clinical Topics, 134(3), 1–17. https://doi.org/10.61872/sdj-2024-03-04