Ralf‐Joachim Kohal

7.0k total citations
160 papers, 5.3k citations indexed

About

Ralf‐Joachim Kohal is a scholar working on Oral Surgery, Orthodontics and Biomedical Engineering. According to data from OpenAlex, Ralf‐Joachim Kohal has authored 160 papers receiving a total of 5.3k indexed citations (citations by other indexed papers that have themselves been cited), including 145 papers in Oral Surgery, 116 papers in Orthodontics and 81 papers in Biomedical Engineering. Recurrent topics in Ralf‐Joachim Kohal's work include Dental Implant Techniques and Outcomes (144 papers), Dental materials and restorations (108 papers) and Bone Tissue Engineering Materials (77 papers). Ralf‐Joachim Kohal is often cited by papers focused on Dental Implant Techniques and Outcomes (144 papers), Dental materials and restorations (108 papers) and Bone Tissue Engineering Materials (77 papers). Ralf‐Joachim Kohal collaborates with scholars based in Germany, Sweden and Switzerland. Ralf‐Joachim Kohal's co-authors include Maria Bächle, Benedikt C. Spies, Kirstin Vach, Frank Butz, Jörg Rudolf Strub, Stefano Pieralli, Martin Wolkewitz, Ronald E. Jung, Sebastian B. M. Patzelt and Kerstin Rabel and has published in prestigious journals such as SHILAP Revista de lepidopterología, Biomaterials and Advanced Functional Materials.

In The Last Decade

Ralf‐Joachim Kohal

149 papers receiving 5.1k citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Ralf‐Joachim Kohal Germany 44 4.1k 3.4k 3.0k 731 702 160 5.3k
Carlo Mangano Italy 45 4.2k 1.0× 2.5k 0.7× 2.2k 0.7× 1.0k 1.4× 1.3k 1.9× 157 5.6k
Wael Att United States 49 4.8k 1.2× 4.2k 1.2× 2.6k 0.9× 620 0.8× 456 0.6× 132 6.7k
Clark M. Stanford United States 36 2.5k 0.6× 1.9k 0.5× 1.8k 0.6× 1.0k 1.4× 457 0.7× 111 4.7k
Francesco Mangano Italy 45 4.6k 1.1× 3.3k 1.0× 1.9k 0.6× 842 1.2× 1.1k 1.5× 160 6.1k
Estevam A. Bonfante Brazil 39 4.6k 1.1× 4.0k 1.2× 2.2k 0.7× 1.3k 1.8× 555 0.8× 263 6.1k
Seong‐Joo Heo South Korea 36 2.7k 0.7× 2.0k 0.6× 2.0k 0.7× 1.1k 1.5× 496 0.7× 171 4.5k
Ryo Jimbo Sweden 41 3.0k 0.7× 1.4k 0.4× 3.0k 1.0× 1.8k 2.5× 1.2k 1.7× 173 5.3k
Petros Koidis Greece 34 1.8k 0.4× 1.8k 0.5× 1.3k 0.4× 531 0.7× 471 0.7× 130 3.5k
Tonino Traini Italy 33 2.0k 0.5× 1.2k 0.4× 1.3k 0.4× 784 1.1× 731 1.0× 118 3.4k
Júlio C. M. Souza Portugal 35 1.9k 0.5× 2.0k 0.6× 2.2k 0.7× 1.3k 1.8× 234 0.3× 152 4.7k

Countries citing papers authored by Ralf‐Joachim Kohal

Since Specialization
Citations

This map shows the geographic impact of Ralf‐Joachim Kohal's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Ralf‐Joachim Kohal with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ralf‐Joachim Kohal more than expected).

Fields of papers citing papers by Ralf‐Joachim Kohal

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ralf‐Joachim Kohal. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Ralf‐Joachim Kohal. The network helps show where Ralf‐Joachim Kohal may publish in the future.

Co-authorship network of co-authors of Ralf‐Joachim Kohal

This figure shows the co-authorship network connecting the top 25 collaborators of Ralf‐Joachim Kohal. A scholar is included among the top collaborators of Ralf‐Joachim Kohal based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Ralf‐Joachim Kohal. Ralf‐Joachim Kohal is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Saravi, Babak, et al.. (2025). Influence of different dental scenarios on the accuracy of computerized optical impressions: an in vitro pilot study. Clinical Oral Investigations. 29(3). 162–162. 2 indexed citations
2.
Rabel, Kerstin, Julian Nold, Ralf‐Joachim Kohal, et al.. (2025). Identification of a surface texture parameter panel characterizing surface micromorphologies of differently processed oral implant surfaces. Dental Materials. 41(6). 631–643. 1 indexed citations
3.
Kohal, Ralf‐Joachim, et al.. (2025). Signs of in-vivo aging of zirconia from explanted dental implants with porous coating after several years in function. Acta Biomaterialia. 194. 498–513. 3 indexed citations
4.
5.
Fritzer, Elfriede, Stefanie Kappel, Ralf‐Joachim Kohal, et al.. (2024). Single mandibular implant study - impact on dietary habits after 5 years of observation in patients with immediate and delayed loading protocols. Clinical Oral Investigations. 28(10). 571–571.
6.
Vach, Kirstin, et al.. (2024). Computerized Optical Impression Making of Fully Dentate Upper and Lower Jaws: An In Vitro Study. Applied Sciences. 14(6). 2370–2370.
7.
Reverón, Helen, Karine Bruyère-Garnier, Erik Adolfsson, et al.. (2023). Bone healing, tissue effects and biomechanical fixation of ‘smooth’ ceramic-coated zirconia-based dental implants: An in vivo study in sheep. Open Ceramics. 17. 100528–100528. 1 indexed citations
8.
Kohal, Ralf‐Joachim, Felix Burkhardt, Jérôme Chevalier, Sebastian B. M. Patzelt, & Frank Butz. (2023). One-Piece Zirconia Oral Implants for Single Tooth Replacement: Five-Year Results from a Prospective Cohort Study. Journal of Functional Biomaterials. 14(2). 116–116. 10 indexed citations
9.
Kohal, Ralf‐Joachim, et al.. (2023). 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). 567–567. 3 indexed citations
10.
Kohal, Ralf‐Joachim, Kirstin Vach, Frank Butz, et al.. (2023). 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). 45–45. 5 indexed citations
11.
Rabel, Kerstin, Julian Nold, James Shen, et al.. (2022). Zirconia fixed dental prostheses fabricated by 3D gel deposition show higher fracture strength than conventionally milled counterparts. Journal of the mechanical behavior of biomedical materials. 135. 105456–105456. 15 indexed citations
12.
Walter, Michael H., Birgit Marré, Jens Dreyhaupt, et al.. (2021). Rehabilitation of shortened dental arches: A fifteen‐year randomised trial. Journal of Oral Rehabilitation. 48(6). 738–744. 5 indexed citations
13.
Saravi, Babak, Andreas Vollmer, Gernot Lang, et al.. (2021). Clinical Performance of CAD/CAM All-ceramic Tooth-supported Fixed Dental Prostheses: A Systematic Review and Meta-analysis. Preprints.org. 17 indexed citations
14.
Rabel, Kerstin, Ralf‐Joachim Kohal, Thorsten Steinberg, et al.. (2021). Human osteoblast and fibroblast response to oral implant biomaterials functionalized with non-thermal oxygen plasma. Scientific Reports. 11(1). 17302–17302. 27 indexed citations
15.
Balmer, Marc, Benedikt C. Spies, Kirstin Vach, et al.. (2018). Three‐year analysis of zirconia implants used for single‐tooth replacement and three‐unit fixed dental prostheses: A prospective multicenter study. Clinical Oral Implants Research. 29(3). 290–299. 32 indexed citations
16.
Spies, Benedikt C., Marc Balmer, Ronald E. Jung, et al.. (2017). All-ceramic, bi-layered crowns supported by zirconia implants: Three-year results of a prospective multicenter study. Journal of Dentistry. 67. 58–65. 15 indexed citations
17.
18.
Schulz, Simon, Pascal Tomakidi, Corinna Mauth, Ralf‐Joachim Kohal, & Thorsten Steinberg. (2012). Interactive Fibroblast-Keratinocyte Co-cultures: An In Vivo -Like Test Platform for Dental Implant-Based Soft Tissue Integration. Tissue Engineering Part C Methods. 18(10). 785–796. 7 indexed citations
19.
Kohal, Ralf‐Joachim, et al.. (2009). In vitro reaction of human osteoblasts on alumina‐toughened zirconia. Clinical Oral Implants Research. 20(11). 1265–1271. 21 indexed citations
20.
Bächle, Maria, U. Hübner, Ralf‐Joachim Kohal, Jin Han, & Margit Wiedmann‐Al‐Ahmad. (2006). Structure and in vitro cytocompatibility of the gastropod shell of Helix pomatia. Tissue and Cell. 38(5). 337–344. 6 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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