U. Sjögren

9.4k total citations · 6 hit papers
64 papers, 7.2k citations indexed

About

U. Sjögren is a scholar working on Oral Surgery, Hematology and Genetics. According to data from OpenAlex, U. Sjögren has authored 64 papers receiving a total of 7.2k indexed citations (citations by other indexed papers that have themselves been cited), including 23 papers in Oral Surgery, 20 papers in Hematology and 11 papers in Genetics. Recurrent topics in U. Sjögren's work include Endodontics and Root Canal Treatments (23 papers), Acute Myeloid Leukemia Research (16 papers) and Dental Radiography and Imaging (16 papers). U. Sjögren is often cited by papers focused on Endodontics and Root Canal Treatments (23 papers), Acute Myeloid Leukemia Research (16 papers) and Dental Radiography and Imaging (16 papers). U. Sjögren collaborates with scholars based in Sweden, Australia and Switzerland. U. Sjögren's co-authors include Göran Sundqvist, David Figdor, Staffan Persson, Kenneth R. Wing, Prashant Nair, L Spångberg, Gunthild Krey, Karl‐Erik Kahnberg, Eva Johansson and Andeŕs S. Byström and has published in prestigious journals such as The Lancet, Infection and Immunity and Journal of Dental Research.

In The Last Decade

U. Sjögren

62 papers receiving 6.5k citations

Hit Papers

Factors affecting the long-term results of endodontic tre... 1990 2026 2002 2014 1990 1998 1997 1991 1990 400 800 1.2k
What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

  1. Factors affecting the long-term results of endodontic treatment
    1990 1.3k citations U. Sjögren, Göran Sundqvist et al. Journal of Endodontics profile →
  2. Microbiologic analysis of teeth with failed endodontic treatment and the outcome of conservative re-treatment
    1998 1.2k citations Göran Sundqvist, David Figdor et al. Oral Surgery Oral Medicine Oral Pathology Oral Radiology and Endodontology profile →
  3. Influence of infection at the time of root filling on the outcome of endodontic treatment of teeth with apical periodontitis
    1997 972 citations U. Sjögren, David Figdor et al. International Endodontic Journal profile →
  4. The antimicrobial effect of calcium hydroxide as a short‐term intracanal dressing
    1991 586 citations U. Sjögren, David Figdor et al. International Endodontic Journal profile →
  5. Intraradicular bacteria and fungi in root-filled, asymptomatic human teeth with therapy-resistant periapical lesions: A long-term light and electron microscopic follow-up study
    1990 564 citations Prashant Nair, U. Sjögren et al. Journal of Endodontics profile →
  6. Influence of infection at the time of root filling on the outcome of endodontic treatment of teeth with apical periodontitis
    1997 500 citations U. Sjögren, David Figdor et al. International Endodontic Journal profile →

Peers

U. Sjögren
K. Gulabivala United Kingdom
Dag Ørstavik Norway
David Figdor Australia
Prashant Nair Switzerland
Gunnar Bergenholtz Sweden
Y.‐L. Ng United Kingdom
Leif Tronstad Norway
Alexandre Augusto Zaia Brazil
Francisco José de Souza‐Filho Brazil
Shimon Friedman Canada
K. Gulabivala United Kingdom
U. Sjögren
Citations per year, relative to U. Sjögren U. Sjögren (= 1×) peers K. Gulabivala

Countries citing papers authored by U. Sjögren

Since Specialization
Citations

This map shows the geographic impact of U. Sjögren'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 U. Sjögren with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites U. Sjögren more than expected).

Fields of papers citing papers by U. Sjögren

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by U. Sjögren. 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 U. Sjögren. The network helps show where U. Sjögren may publish in the future.

Co-authorship network of co-authors of U. Sjögren

This figure shows the co-authorship network connecting the top 25 collaborators of U. Sjögren. A scholar is included among the top collaborators of U. Sjögren 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 U. Sjögren. U. Sjögren 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.
Claesson, Rolf, U. Sjögren, Anders Esberg, Malin Brundin, & Margareta Granlund. (2017). Actinomyces radicidentis and Actinomyces haliotis, coccoid Actinomyces species isolated from the human oral cavity. Anaerobe. 48. 19–26. 4 indexed citations
2.
Brundin, Malin, David Figdor, Anders Johansson, & U. Sjögren. (2013). Preservation of Bacterial DNA by Human Dentin. Journal of Endodontics. 40(2). 241–245. 12 indexed citations
3.
Brundin, Malin, David Figdor, Göran Sundqvist, & U. Sjögren. (2012). DNA Binding to Hydroxyapatite: A Potential Mechanism for Preservation of Microbial DNA. Journal of Endodontics. 39(2). 211–216. 60 indexed citations
4.
Brundin, Malin, et al.. (2010). Persistence of dead-cell bacterial DNA in ex vivo root canals and influence of nucleases on DNA decay in vitro. Oral Surgery Oral Medicine Oral Pathology Oral Radiology and Endodontology. 110(6). 789–794. 26 indexed citations
5.
Mitelman, Felix, et al.. (2009). Relation between chromosomes and mitotic activity in acute myeloid leukemia. Hereditas. 79(2). 305–306.
6.
Nair, Prashant, Göran Sundqvist, & U. Sjögren. (2008). Experimental evidence supports the abscess theory of development of radicular cysts. Oral Surgery Oral Medicine Oral Pathology Oral Radiology and Endodontology. 106(2). 294–303. 38 indexed citations
7.
Nair, Prashant, Malin Brundin, Göran Sundqvist, & U. Sjögren. (2008). Building biofilms in vital host tissues: a survival strategy of Actinomyces radicidentis. Oral Surgery Oral Medicine Oral Pathology Oral Radiology and Endodontology. 106(4). 595–603. 14 indexed citations
8.
Wallgren, Per, et al.. (2000). Detection of serum antibodies against Erysipelothrix rhusiopathiae as diagnostic method in pigs.. 52(2). 69–76. 4 indexed citations
9.
Nair, Prashant, U. Sjögren, David Figdor, & Göran Sundqvist. (1999). Persistent periapical radiolucencies of root-filled human teeth, failed endodontic treatments, and periapical scars. Oral Surgery Oral Medicine Oral Pathology Oral Radiology and Endodontology. 87(5). 617–627. 156 indexed citations
10.
Ohlin, Acke, U. Sjögren, & Ulf H. Lerner. (1999). Bone resorbing activity released from zymosan-activated mouse peritoneal macrophages - the role of prostanoids and interleukin-1. Inflammation Research. 48(4). 181–192. 10 indexed citations
11.
Sundqvist, Göran, et al.. (1998). Microbiologic analysis of teeth with failed endodontic treatment and the outcome of conservative re-treatment. Oral Surgery Oral Medicine Oral Pathology Oral Radiology and Endodontology. 85(1). 86–93. 1187 indexed citations breakdown →
12.
Nair, Prashant, U. Sjögren, & Göran Sundqvist. (1998). Cholesterol crystals as an etiological factor in non‐resolving chronic inflammation, an experimental study in guinea pigs. European Journal Of Oral Sciences. 106(2p1). 644–650. 55 indexed citations
13.
Sjögren, U., Acke Ohlin, Göran Sundqvist, & Ulf H. Lerner. (1998). Gutta‐percha‐stimulated mouse macrophages release factors that activate the bone resorptive system of mouse calvarial bone. European Journal Of Oral Sciences. 106(4). 872–881. 13 indexed citations
14.
Sjögren, U., David Figdor, Staffan Persson, & Göran Sundqvist. (1997). Influence of infection at the time of root filling on the outcome of endodontic treatment of teeth with apical periodontitis. International Endodontic Journal. 30(5). 297–306. 972 indexed citations breakdown →
15.
Sjögren, U., et al.. (1993). Radicular cyst affecting a root‐filled human tooth: a long‐term post‐treatment follow‐up. International Endodontic Journal. 26(4). 225–233. 109 indexed citations
16.
17.
Nair, Prashant, U. Sjögren, Gunthild Krey, Karl‐Erik Kahnberg, & Göran Sundqvist. (1990). Intraradicular bacteria and fungi in root-filled, asymptomatic human teeth with therapy-resistant periapical lesions: A long-term light and electron microscopic follow-up study. Journal of Endodontics. 16(12). 580–588. 564 indexed citations breakdown →
18.
Sjögren, U., et al.. (1990). Factors affecting the long-term results of endodontic treatment. Journal of Endodontics. 16(10). 498–504. 1310 indexed citations breakdown →
19.
Sjögren, U., L. Hänström, R.‐P. Happonen, & Göran Sundqvist. (1990). Extensive bone loss associated with periapical infection with Bacteroides gingivalis: a case report. International Endodontic Journal. 23(5). 254–262. 10 indexed citations
20.
Sjögren, U. & L. Brandt. (1974). ERYTHROPOIESIS IN PATIENTS WITH BONE MARROW METASTASES. Acta Medica Scandinavica. 195(1-6). 325–328. 3 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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