Upul Cooray

515 total citations
32 papers, 318 citations indexed

About

Upul Cooray is a scholar working on Periodontics, General Health Professions and Health. According to data from OpenAlex, Upul Cooray has authored 32 papers receiving a total of 318 indexed citations (citations by other indexed papers that have themselves been cited), including 16 papers in Periodontics, 8 papers in General Health Professions and 7 papers in Health. Recurrent topics in Upul Cooray's work include Dental Health and Care Utilization (15 papers), Health disparities and outcomes (7 papers) and Dementia and Cognitive Impairment Research (4 papers). Upul Cooray is often cited by papers focused on Dental Health and Care Utilization (15 papers), Health disparities and outcomes (7 papers) and Dementia and Cognitive Impairment Research (4 papers). Upul Cooray collaborates with scholars based in Japan, Singapore and United Kingdom. Upul Cooray's co-authors include Ken Osaka, Jun Aida, Katsunori Kondo, Sakura Kiuchi, Takaaki Ikeda, Takafumi Yamamoto, Anja Heilmann, Georgios Tsakos, Richard G. Watt and Noriko Nakazawa and has published in prestigious journals such as SHILAP Revista de lepidopterología, American Journal of Epidemiology and Social Science & Medicine.

In The Last Decade

Upul Cooray

29 papers receiving 313 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Upul Cooray Japan 13 181 70 59 51 38 32 318
Sakura Kiuchi Japan 11 240 1.3× 73 1.0× 66 1.1× 20 0.4× 84 2.2× 42 342
Katri Ståhlnacke Sweden 11 259 1.4× 125 1.8× 36 0.6× 74 1.5× 45 1.2× 17 392
Howard J. Cowen United States 11 241 1.3× 68 1.0× 18 0.3× 38 0.7× 37 1.0× 25 331
Hideki Fukuda Japan 11 159 0.9× 97 1.4× 77 1.3× 20 0.4× 106 2.8× 42 496
Fred De Jong United States 7 207 1.1× 167 2.4× 74 1.3× 52 1.0× 10 0.3× 8 363
Soraya León Chile 11 204 1.1× 60 0.9× 19 0.3× 27 0.5× 15 0.4× 31 313
Kakuhiro Fukai Japan 10 248 1.4× 69 1.0× 21 0.4× 63 1.2× 37 1.0× 27 337
Patcharawan Srisilapanan Thailand 13 460 2.5× 107 1.5× 25 0.4× 83 1.6× 56 1.5× 25 590
Satoko Ohara Japan 13 386 2.1× 49 0.7× 30 0.5× 45 0.9× 99 2.6× 28 506
Mariana Marinho Davino de Medeiros Brazil 8 68 0.4× 43 0.6× 37 0.6× 8 0.2× 59 1.6× 28 253

Countries citing papers authored by Upul Cooray

Since Specialization
Citations

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

Fields of papers citing papers by Upul Cooray

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Upul Cooray

This figure shows the co-authorship network connecting the top 25 collaborators of Upul Cooray. A scholar is included among the top collaborators of Upul Cooray 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 Upul Cooray. Upul Cooray 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.
Cooray, Upul, et al.. (2025). Impact of Tooth Preservation or Replacement on Diet Quality: Modified Treatment Policies Approach. Journal of Periodontal Research. 1 indexed citations
2.
Romandini, Mario, et al.. (2024). Insulin resistance and periodontitis: Mediation by blood pressure. Journal of Periodontal Research. 60(3). 226–235. 5 indexed citations
3.
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Miki, Takahiro, Upul Cooray, Masashi Kanai, et al.. (2024). Effects of hypothetical low- versus moderate- to high-intensity weight management regimens on knee replacements. American Journal of Epidemiology. 194(10). 2829–2836. 1 indexed citations
6.
Kiuchi, Sakura, Yusuke Matsuyama, Kenji Takeuchi, et al.. (2024). Number of Teeth and Dementia-free Life Expectancy: A 10-Year Follow-Up Study from the Japan Gerontological Evaluation Study. Journal of the American Medical Directors Association. 25(11). 105258–105258. 2 indexed citations
7.
Yamamoto, Takafumi, Upul Cooray, Taro Kusama, et al.. (2024). Childhood Socioeconomic Status Affects Dental Pain in Later Life. JDR Clinical & Translational Research. 10(2). 135–145. 1 indexed citations
8.
Miki, Takahiro, Upul Cooray, Masashi Kanai, Yuta Hagiwara, & Takaaki Ikeda. (2024). Cultural engagement and prevalence of pain in socially isolated older people: a longitudinal modified treatment policy approach. EClinicalMedicine. 69. 102477–102477. 1 indexed citations
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Inoue, Yuko, Upul Cooray, Miho Ishimaru, et al.. (2023). Oral Self-Care, Pneumococcal Vaccination, and Pneumonia Among Japanese Older People, Assessed With Machine Learning. The Journals of Gerontology Series A. 78(11). 2170–2175. 2 indexed citations
11.
Kaneko, Makoto, Takaaki Ikeda, Machiko Inoue, et al.. (2023). Development and validation of a rurality index for healthcare research in Japan: a modified Delphi study. BMJ Open. 13(6). e068800–e068800. 12 indexed citations
12.
Kiuchi, Sakura, Jun Aida, Upul Cooray, et al.. (2023). Education‐related inequalities in oral health among older adults: Comparing Singapore and Japan. Community Dentistry And Oral Epidemiology. 51(4). 671–679. 5 indexed citations
13.
Kiuchi, Sakura, Kenji Takeuchi, Taro Kusama, et al.. (2023). Does online communication mitigate the association between a decrease in face-to-face communication and laughter during the COVID-19 pandemic? A cross-sectional study from JACSIS study. Preventive Medicine Reports. 36. 102432–102432. 2 indexed citations
14.
Aida, Jun, Upul Cooray, Takaaki Ikeda, et al.. (2022). Does remaining teeth and dental prosthesis associate with social isolation? A six‐year longitudinal study from the Japan Gerontological Evaluation Study (JAGES). Community Dentistry And Oral Epidemiology. 51(2). 345–354. 20 indexed citations
15.
Ikeda, Takaaki, Upul Cooray, Masanori Hariyama, et al.. (2022). An Interpretable Machine Learning Approach to Predict Fall Risk Among Community-Dwelling Older Adults: a Three-Year Longitudinal Study. Journal of General Internal Medicine. 37(11). 2727–2735. 15 indexed citations
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17.
Kiuchi, Sakura, Upul Cooray, Taro Kusama, et al.. (2021). Oral Status and Dementia Onset: Mediation of Nutritional and Social Factors. Journal of Dental Research. 101(4). 420–427. 33 indexed citations
18.
Kiuchi, Sakura, Taro Kusama, Kemmyo Sugiyama, et al.. (2021). Longitudinal Association Between Oral Status and Cognitive Decline Using Fixed-effects Analysis. Journal of Epidemiology. 32(7). 330–336. 18 indexed citations
19.
Cooray, Upul, Richard G. Watt, Georgios Tsakos, et al.. (2021). Importance of socioeconomic factors in predicting tooth loss among older adults in Japan: Evidence from a machine learning analysis. Social Science & Medicine. 291. 114486–114486. 25 indexed citations
20.
Aida, Jun, et al.. (2019). Inequalities in Caries Experience Among Mongolian Children. International Journal of Environmental Research and Public Health. 16(20). 3892–3892. 10 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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2026