Ralf Joachim Kohal (Ralf Kohal, Ralf-Joachim Kohal, Ralf J Kohal)

Publication Activity (10 Years)

Years Active: 2019-2024
Publications (10 Years): 43

Top Topics

Systematic Review

Magnetic Resonance Imaging

Top Venues

Journal of functional biomaterials

Clinical oral implants research

Materials (Basel, Switzerland)

Nanomaterials (Basel, Switzerland)

This page only lists publications with an associated author ORCID identifier.

Publications

Ralf Joachim Kohal, Ellen Riesterer, Kirstin Vach, Sebastian Berthold Maximilian Patzelt, Aljaž Iveković, Lara Einfalt, AndraŽ Kocjan, Anna-Lena Hillebrecht
Fracture Resistance of a Bone-Level Two-Piece Zirconia Oral Implant System-The Influence of Artificial Loading and Hydrothermal Aging. Journal of functional biomaterials 15 (5) (2024)
Ralf Joachim Kohal, Ellen Riesterer, Kirstin Vach, Sebastian Berthold Maximilian Patzelt, Aljaž Iveković, Lara Einfalt, AndraŽ Kocjan, Anna-Lena Hillebrecht
Fracture Resistance of a Bone-Level Two-Piece Zirconia Oral Implant System-The Influence of Artificial Loading and Hydrothermal Aging. Journal of functional biomaterials 15 (5) (2024)
Ralf Joachim Kohal, Ellen Riesterer, Kirstin Vach, Sebastian Berthold Maximilian Patzelt, Aljaž Iveković, Lara Einfalt, AndraŽ Kocjan, Anna-Lena Hillebrecht
Fracture Resistance of a Bone-Level Two-Piece Zirconia Oral Implant System-The Influence of Artificial Loading and Hydrothermal Aging. Journal of functional biomaterials 15 (5) (2024)
Ralf Joachim Kohal, Felix Burkhardt, Jerome Chevalier, Sebastian Berthold Maximilian Patzelt, Frank Butz
One-Piece Zirconia Oral Implants for Single Tooth Replacement: Five-Year Results from a Prospective Cohort Study. Journal of functional biomaterials 14 (2) (2023)
Ralf Joachim Kohal, Anja Trinkner, Felix Burkhardt, Sebastian Berthold Maximilian Patzelt, Kirstin Vach, Monika Kušter, Anže Abram, AndraŽ Kocjan, Julian Nold
Long-Term Stability of Hydrothermally Aged and/or Dynamically Loaded One-Piece Diameter Reduced Zirconia Oral Implants. Journal of functional biomaterials 14 (3) (2023)
Ralf Joachim Kohal, Kirstin Vach, Frank Butz, Benedikt Christopher Spies, Sebastian Berthold Maximilian Patzelt, Felix Burkhardt
One-Piece Zirconia Oral Implants for the Support of Three-Unit Fixed Dental Prostheses: Three-Year Results from a Prospective Case Series. Journal of functional biomaterials 14 (1) (2023)
Ralf Joachim Kohal, Tim Schikofski, Erik Adolfsson, Kirstin Vach, Sebastian Berthold Maximilian Patzelt, Julian Nold, Gregor Wemken
Fracture Resistance of a Two-Piece Zirconia Implant System after Artificial Loading and/or Hydrothermal Aging-An In Vitro Investigation. Journal of functional biomaterials 14 (12) (2023)
Ralf Joachim Kohal, Anja Trinkner, Felix Burkhardt, Sebastian Berthold Maximilian Patzelt, Kirstin Vach, Monika Kušter, Anže Abram, AndraŽ Kocjan, Julian Nold
Long-Term Stability of Hydrothermally Aged and/or Dynamically Loaded One-Piece Diameter Reduced Zirconia Oral Implants. Journal of functional biomaterials 14 (3) (2023)
Aimen Bagegni, Justus Borchers, Samuel Beisel, Sebastian Berthold Maximilian Patzelt, Kirstin Vach, Ralf Joachim Kohal
Bonding Strength of Various Luting Agents between Zirconium Dioxide Crowns and Titanium Bonding Bases after Long-Term Artificial Chewing. Materials (Basel, Switzerland) 16 (23) (2023)
Ralf Joachim Kohal, Felix Burkhardt, Jerome Chevalier, Sebastian Berthold Maximilian Patzelt, Frank Butz
One-Piece Zirconia Oral Implants for Single Tooth Replacement: Five-Year Results from a Prospective Cohort Study. Journal of functional biomaterials 14 (2) (2023)
Ralf Joachim Kohal, Tim Schikofski, Erik Adolfsson, Kirstin Vach, Sebastian Berthold Maximilian Patzelt, Julian Nold, Gregor Wemken
Fracture Resistance of a Two-Piece Zirconia Implant System after Artificial Loading and/or Hydrothermal Aging-An In Vitro Investigation. Journal of functional biomaterials 14 (12) (2023)
Ralf Joachim Kohal, Kirstin Vach, Frank Butz, Benedikt Christopher Spies, Sebastian Berthold Maximilian Patzelt, Felix Burkhardt
One-Piece Zirconia Oral Implants for the Support of Three-Unit Fixed Dental Prostheses: Three-Year Results from a Prospective Case Series. Journal of functional biomaterials 14 (1) (2023)
Ralf Joachim Kohal, Kirstin Vach, Frank Butz, Benedikt Christopher Spies, Sebastian Berthold Maximilian Patzelt, Felix Burkhardt
One-Piece Zirconia Oral Implants for the Support of Three-Unit Fixed Dental Prostheses: Three-Year Results from a Prospective Case Series. Journal of functional biomaterials 14 (1) (2023)
Ralf Joachim Kohal, Tim Schikofski, Erik Adolfsson, Kirstin Vach, Sebastian Berthold Maximilian Patzelt, Julian Nold, Gregor Wemken
Fracture Resistance of a Two-Piece Zirconia Implant System after Artificial Loading and/or Hydrothermal Aging-An In Vitro Investigation. Journal of functional biomaterials 14 (12) (2023)
Ralf Joachim Kohal, Kirstin Vach, Frank Butz, Benedikt Christopher Spies, Sebastian Berthold Maximilian Patzelt, Felix Burkhardt
One-Piece Zirconia Oral Implants for the Support of Three-Unit Fixed Dental Prostheses: Three-Year Results from a Prospective Case Series. Journal of functional biomaterials 14 (1) (2023)
Babak Saravi, Julia Ilbertz, Kirstin Vach, Ralf Joachim Kohal, Sebastian Berthold Maximilian Patzelt
Accuracy of Computerized Optical Impression Making in Fabrication of Removable Dentures for Partially Edentulous Jaws: An In Vivo Feasibility Study. Journal of functional biomaterials 14 (9) (2023)
Ralf Joachim Kohal, Anja Trinkner, Felix Burkhardt, Sebastian Berthold Maximilian Patzelt, Kirstin Vach, Monika Kušter, Anže Abram, AndraŽ Kocjan, Julian Nold
Long-Term Stability of Hydrothermally Aged and/or Dynamically Loaded One-Piece Diameter Reduced Zirconia Oral Implants. Journal of functional biomaterials 14 (3) (2023)
Ralf Joachim Kohal, Kirstin Vach, Frank Butz, Benedikt Christopher Spies, Sebastian Berthold Maximilian Patzelt, Felix Burkhardt
One-Piece Zirconia Oral Implants for the Support of Three-Unit Fixed Dental Prostheses: Three-Year Results from a Prospective Case Series. Journal of functional biomaterials 14 (1) (2023)
Ralf Joachim Kohal, Felix Burkhardt, Jerome Chevalier, Sebastian Berthold Maximilian Patzelt, Frank Butz
One-Piece Zirconia Oral Implants for Single Tooth Replacement: Five-Year Results from a Prospective Cohort Study. Journal of functional biomaterials 14 (2) (2023)
Ralf Joachim Kohal, Felix Burkhardt, Jerome Chevalier, Sebastian Berthold Maximilian Patzelt, Frank Butz
One-Piece Zirconia Oral Implants for Single Tooth Replacement: Five-Year Results from a Prospective Cohort Study. Journal of functional biomaterials 14 (2) (2023)
Ralf Joachim Kohal, Anja Trinkner, Felix Burkhardt, Sebastian Berthold Maximilian Patzelt, Kirstin Vach, Monika Kušter, Anže Abram, AndraŽ Kocjan, Julian Nold
Long-Term Stability of Hydrothermally Aged and/or Dynamically Loaded One-Piece Diameter Reduced Zirconia Oral Implants. Journal of functional biomaterials 14 (3) (2023)
Malin Strasding, Samir Abou-Ayash, Thomas Laziok, Sam Doerken, Ralf Joachim Kohal, Sebastian Berthold Maximilian Patzelt
Non-Precious Metal Alloy Double Crown-Retained Removable Partial Dentures: A Cross-Sectional In Vivo Investigation. Materials (Basel, Switzerland) 15 (17) (2022)
Aimen Bagegni, Vincent Weihrauch, Kirstin Vach, Ralf Joachim Kohal
The Mechanical Behavior of a Screwless Morse Taper Implant-Abutment Connection: An In Vitro Study. Materials (Basel, Switzerland) 15 (9) (2022)
Alexander Welle, Kerstin Rabel, Matthias Schwotzer, Ralf Joachim Kohal, Thorsten Steinberg, Brigitte Altmann
Identification of Zirconia Particle Uptake in Human Osteoblasts by ToF-SIMS Analysis and Particle-Size Effects on Cell Metabolism. Nanomaterials (Basel, Switzerland) 12 (23) (2022)
Alexander Welle, Kerstin Rabel, Matthias Schwotzer, Ralf Joachim Kohal, Thorsten Steinberg, Brigitte Altmann
Identification of Zirconia Particle Uptake in Human Osteoblasts by ToF-SIMS Analysis and Particle-Size Effects on Cell Metabolism. Nanomaterials (Basel, Switzerland) 12 (23) (2022)
Ralf Joachim Kohal, Christopher von Schierholz, Julian Nold, Benedikt C Spies, Erik Adolfsson, Kirstin Vach, Felix Burkhardt
Influence of loading and aging on the fracture strength of an injection-molded two-piece zirconia implant restored with a zirconia abutment. Clinical oral implants research (2022)
Sebastian Berthold Maximilian Patzelt, Marei Krügel, Christian Wesemann, Stefano Pieralli, Julian Nold, Benedikt Christopher Spies, Kirstin Vach, Ralf Joachim Kohal
In Vitro Time Efficiency, Fit, and Wear of Conventionally- versus Digitally-Fabricated Occlusal Splints. Materials (Basel, Switzerland) 15 (3) (2022)
Babak Saravi, Anselm Flohr, Sebastian Berthold Maximilian Patzelt, Benedikt Christopher Spies, Derek Hazard, Ralf Joachim Kohal
Fatigue and Fracture Resistance Testing of Polyether Ether Ketone (PEEK) Implant Abutments in an Ex Vivo Chewing Simulator Model. Materials (Basel, Switzerland) 15 (19) (2022)
Alexander Welle, Kerstin Rabel, Matthias Schwotzer, Ralf Joachim Kohal, Thorsten Steinberg, Brigitte Altmann
Identification of Zirconia Particle Uptake in Human Osteoblasts by ToF-SIMS Analysis and Particle-Size Effects on Cell Metabolism. Nanomaterials (Basel, Switzerland) 12 (23) (2022)
Julian Nold, Christian Wesemann, Laura Rieg, Lara Binder, Siegbert Witkowski, Benedikt Christopher Spies, Ralf Joachim Kohal
Does Printing Orientation Matter? In-Vitro Fracture Strength of Temporary Fixed Dental Prostheses after a 1-Year Simulation in the Artificial Mouth. Materials (Basel, Switzerland) 14 (2) (2021)
Nadja Rohr, Marc Balmer, Ronald Ernst Jung, Ralf Joachim Kohal, Benedikt Christopher Spies, Christoph H F Hämmerle, Jens Fischer
Influence of zirconia implant surface topography on first bone implant contact within a prospective cohort study. Clinical implant dentistry and related research 23 (4) (2021)
Felix Burkhardt, Benedikt Christopher Spies, Lennart Riemer, Erik Adolfsson, Sam Doerken, Ralf Joachim Kohal
Fracture resistance and crystal phase transformation of a one- and a two-piece zirconia implant with and without simultaneous loading and aging-An in vitro study. Clinical oral implants research 32 (11) (2021)
Babak Saravi, Andreas Vollmer, Maja Hartmann, Gernot Michael Lang, Ralf Joachim Kohal, Martin Boeker, Sebastian B M Patzelt
Clinical Performance of CAD/CAM All-Ceramic Tooth-Supported Fixed Dental Prostheses: A Systematic Review and Meta-Analysis. Materials (Basel, Switzerland) 14 (10) (2021)
Dietmar Weng, Lina Stapf, Matthias Kern, Ralf Joachim Kohal
Platelet-Derived Growth Factor-Modulated Guided Tissue Regeneration with a Bioresorbable Membrane in Class III Furcation Defects: A Histometric Study in the Monkey. Materials (Basel, Switzerland) 14 (9) (2021)
Felix Burkhardt, Markus Harlass, Erik Adolfsson, Kirstin Vach, Benedikt Christopher Spies, Ralf Joachim Kohal
A Novel Zirconia-Based Composite Presents an Aging Resistant Material for Narrow-Diameter Ceramic Implants. Materials (Basel, Switzerland) 14 (9) (2021)
Bjarni Elvar Pjetursson, Irena Sailer, Andrey Latyshev, Kerstin Rabel, Ralf Joachim Kohal, Duygu Narin Karasan
A systematic review and meta-analysis evaluating the survival, the failure, and the complication rates of veneered and monolithic all-ceramic implant-supported single crowns. Clinical oral implants research (2021)
Ralf Joachim Kohal, Benedikt Christopher Spies, Kirstin Vach, Marc Balmer, Stefano Pieralli
A Prospective Clinical Cohort Investigation on Zirconia Implants: 5-Year Results. Journal of clinical medicine 9 (8) (2020)
Marc Balmer, Benedikt Christopher Spies, Ralf Joachim Kohal, Christoph Hans Franz Hämmerle, Kirstin Vach, Ronald Ernst Jung
Zirconia implants restored with single crowns or fixed dental prostheses: 5-year results of a prospective cohort investigation. Clinical oral implants research 31 (5) (2020)
Matthias Kern, Christoph Behrendt, Elfriede Fritzer, Ralf Joachim Kohal, Ralph G Luthardt, Nadine Frfr V Maltzahn, Michael Rädel, Daniel R Reissmann, Franz Sebastian Schwindling, Stefan Wolfart, Nicole Passia
5-year randomized multicenter clinical trial on single dental implants placed in the midline of the edentulous mandible. Clinical oral implants research 32 (2) (2020)
Tabea V Flügge, Ute Ludwig, Jan-Bernd Hövener, Ralf Joachim Kohal, Daniël Wismeijer, Katja Nelson
Virtual implant planning and fully guided implant surgery using magnetic resonance imaging-Proof of principle. Clinical oral implants research 31 (6) (2020)
Kerstin Rabel, Benedikt Christopher Spies, Stefano Pieralli, Kirstin Vach, Ralf Joachim Kohal
The clinical performance of all-ceramic implant-supported single crowns: A systematic review and meta-analysis. Clinical oral implants research (2019)
Benedikt Christopher Spies, Marc Balmer, Ronald Ernst Jung, Irena Sailer, Kirstin Vach, Ralf Joachim Kohal
All-ceramic single crowns supported by zirconia implants: 5-year results of a prospective multicenter study. Clinical oral implants research 30 (5) (2019)
Stefano Pieralli, Ralf Joachim Kohal, Kerstin Rabel, Manja von Stein-Lausnitz, Kirstin Vach, Benedikt Christopher Spies
Clinical outcomes of partial and full-arch all-ceramic implant-supported fixed dental prostheses. A systematic review and meta-analysis. Clinical oral implants research (2019)