Grajewski et al., 2010. A Scientometric Analysis of Leukoplakia and Erythroplakia. LARYNGO-RHINO-OTOLOGIE 89 (4): 210-215.

Eugene Garfield garfield at CODEX.CIS.UPENN.EDU
Mon May 3 13:46:04 EDT 2010

Grajewski, S; Quarcoo, D; Uibel, S; Scutaru, C; Groneberg, D; Spallek, M. 2010. 
A Scientometric Analysis of Leukoplakia and Erythroplakia. LARYNGO-RHINO-
OTOLOGIE 89 (4): 210-215.

Author Full Name(s): Grajewski, S.; Quarcoo, D.; Uibel, S.; Scutaru, C.; 
Groneberg, D.; Spallek, M.
Language: German
Document Type: Article

Author Keywords: leukoplakia; erythroplakia; erythroplasia; scientometry; 
density equalizing mapping

Background: The oral leukoplakia and erythroplakia is one of the most common 
epithelial precursor lesions of the oral squamous cell carcinoma. Transformation 
rates are approximately 0.9-17% in 10 years for leukoplakia and in 14-50% for 
the erythroplakia. Despite the clinical relevance of these lesions, currently 
exists no detailed bibliometric analysis.

Methods: The present study combines classical bibliometric tools with novel 
scientometric and visualizing techniques in order to analyse and categorize 
research in the field of leukoplakia and erythroplakia.

Results: All studies related to leukoplakia and erythroplakia and listed in the ISI 
database since 1900 were identified by the use of defined search terms. The 
bibliometric analysis of the collected data shows a continuous increase in 
quantitative marker such as the number of publications and cooperation and 
qualitative markers, such as citations and H-index. The combination with 
density equalizing mapping revealed a distinct global structure of research and 
citing activity. Radar chart techniques were used to illustrate bi- and 
multilateral cooperations and institution research collaborations.

Discussion: The present study demonstrates the first scientometric approach 
that visualizes research activities in the area of leukoplakia and erythroplakia. 
It provides data that can be used for geografical context and research 

Addresses: [Grajewski, S.; Quarcoo, D.; Uibel, S.; Scutaru, C.; Groneberg, D.; 
Spallek, M.] Charite, Inst Arbeitsmed, D-14159 Berlin, Germany
Reprint Address: Grajewski, S, Charite, Inst Arbeitsmed, Thielallee 69-73, D-
14159 Berlin, Germany.

E-mail Address: sonja.grajewski at
ISSN: 0935-8943
DOI: 10.1055/s-0029-1243624

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