Ryoko Otsuka

432 total citations
25 papers, 304 citations indexed

About

Ryoko Otsuka is a scholar working on Periodontics, Physiology and Public Health, Environmental and Occupational Health. According to data from OpenAlex, Ryoko Otsuka has authored 25 papers receiving a total of 304 indexed citations (citations by other indexed papers that have themselves been cited), including 18 papers in Periodontics, 7 papers in Physiology and 4 papers in Public Health, Environmental and Occupational Health. Recurrent topics in Ryoko Otsuka's work include Dental Health and Care Utilization (14 papers), Oral microbiology and periodontitis research (12 papers) and Nutrition and Health in Aging (6 papers). Ryoko Otsuka is often cited by papers focused on Dental Health and Care Utilization (14 papers), Oral microbiology and periodontitis research (12 papers) and Nutrition and Health in Aging (6 papers). Ryoko Otsuka collaborates with scholars based in Japan and Myanmar. Ryoko Otsuka's co-authors include Nobuhiro Hanada, Yoshiaki Nomura, Erika Kakuta, Ayako Okada, Masaru Wada, Ryo Hasegawa, Takatoshi Murata, Yasuko Momoi, Tamotsu Sato and Susumu Imai and has published in prestigious journals such as PLoS ONE, Nutrients and International Journal of Environmental Research and Public Health.

In The Last Decade

Ryoko Otsuka

25 papers receiving 295 citations

Peers

Ryoko Otsuka

PERIO

PHYSI

PHEOH

KM Shivakumar India

Yoon Young Choi South Korea

Neha Mahajan India

Malin Stensson Sweden

Snehal Patil India

Jae‐Gon Kim South Korea

Hajime Oda Japan

Meryem Uzamış Tekçiçek Türkiye

Duygu Kara Türkiye

Bharat Suneja India

KM Shivakumar India

Ryoko Otsuka

259 ×1.5

PERIO

35 ×0.4

PHYSI

4 ×0.1

55 ×1.2

49 ×1.3

PHEOH

Citations per year, relative to Ryoko Otsuka Ryoko Otsuka (= 1×) peers KM Shivakumar

Countries citing papers authored by Ryoko Otsuka

Since Specialization

Citations

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

Fields of papers citing papers by Ryoko Otsuka

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ryoko Otsuka

This figure shows the co-authorship network connecting the top 25 collaborators of Ryoko Otsuka. A scholar is included among the top collaborators of Ryoko Otsuka 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 Ryoko Otsuka. Ryoko Otsuka is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Okada, Ayako, Susumu Imai, Tomohiro Kikuchi, et al.. (2022). Evaluation of the cariogenic potential of a probiotic candidate strain Lactobacillus gasseri YIT 12321. Archives of Oral Biology. 136. 105364–105364. 2 indexed citations

Nomura, Yoshiaki, Shunsuke Suzuki, Akira Suzuki, et al.. (2021). Structure and Validity of Questionnaire for Oral Frail Screening. Healthcare. 9(1). 45–45. 21 indexed citations

Okada, Ayako, Takatoshi Murata, Khairul Matin, et al.. (2021). Effect of advanced periodontal self-care in patients with early-stage periodontal diseases on endothelial function: An open-label, randomized controlled trial. PLoS ONE. 16(9). e0257247–e0257247. 9 indexed citations

Nomura, Yoshiaki, Erika Kakuta, Ayako Okada, et al.. (2020). Effects of self-assessed chewing ability, tooth loss and serum albumin on mortality in 80-year-old individuals: a 20-year follow-up study. BMC Oral Health. 20(1). 122–122. 28 indexed citations

Nomura, Yoshiaki, Mieko Shimada, Erika Kakuta, et al.. (2020). Mortality- and Health-Related Factors in a Community-Dwelling of Oldest-Older Adults at the Age of 90: A 10-Year Follow-Up Study. International Journal of Environmental Research and Public Health. 17(24). 9584–9584. 3 indexed citations

Nomura, Yoshiaki, et al.. (2020). Effect of Mucosal Brushing on the Serum Levels of C-Reactive Protein for Patients Hospitalized with Acute Symptoms. Medicina. 56(10). 549–549. 2 indexed citations

Nomura, Yoshiaki, Tetsuro Sato, Ayako Okada, et al.. (2020). Prediction of Health Care Costs by Dental Health Care Costs and Periodontal Status. Applied Sciences. 10(9). 3140–3140. 2 indexed citations

Nomura, Yoshiaki, Erika Kakuta, Ayako Okada, et al.. (2020). Oral Microbiome in Four Female Centenarians. Applied Sciences. 10(15). 5312–5312. 10 indexed citations

Nomura, Yoshiaki, Ryoko Otsuka, Ryo Hasegawa, & Nobuhiro Hanada. (2020). Oral Microbiome of Children Living in an Isolated Area in Myanmar. International Journal of Environmental Research and Public Health. 17(11). 4033–4033. 14 indexed citations

10.

Nomura, Yoshiaki, Shunsuke Suzuki, Kenji Morita, et al.. (2020). Nutritional Status and Oral Frailty: A Community Based Study. Nutrients. 12(9). 2886–2886. 30 indexed citations

11.

Nomura, Yoshiaki, et al.. (2020). Tooth-Level Analysis of Dental Caries in Primary Dentition in Myanmar Children. International Journal of Environmental Research and Public Health. 17(20). 7613–7613. 12 indexed citations

12.

Nomura, Yoshiaki, Ayako Okada, Erika Kakuta, et al.. (2019). Consistency of supplied food and dentition status of the elderly in residential care homes. BMC Oral Health. 19(1). 74–74. 11 indexed citations

13.

Otsuka, Ryoko, Yoshiaki Nomura, Ayako Okada, et al.. (2019). Properties of manual toothbrush that influence on plaque removal of interproximal surface in vitro. Journal of Dental Sciences. 15(1). 14–21. 9 indexed citations

14.

Nomura, Yoshiaki, Ryoko Otsuka, Ayako Okada, et al.. (2019). Prevalence of Dental Caries in 5- and 6-Year-Old Myanmar Children. International Journal of Dentistry. 2019. 1–7. 20 indexed citations

15.

Nomura, Yoshiaki, Kakuhiro Fukai, Ayako Okada, et al.. (2019). PRECEDE-PROCEED model based questionnaire and saliva tests for oral health checkup in adult. Journal of Oral Science. 61(4). 544–548. 9 indexed citations

16.

Otsuka, Ryoko, et al.. (2019). Dental treatment service supplement in four townships in Chin state in Myanmar. 19(1). 27–31. 1 indexed citations

17.

Otsuka, Ryoko, Susumu Imai, Takatoshi Murata, et al.. (2014). Application of chimeric glucanase comprising mutanase and dextranase for prevention of dental biofilm formation. Microbiology and Immunology. 59(1). 28–36. 52 indexed citations

18.

Kakuta, Erika, H. Nomura, Yoh Tamaki, et al.. (2012). Oral Conditions that Affect Salivary Biomarkers : Preliminary Survey by Self-administrated Questionnaire. JOURNAL OF DENTAL HEALTH. 62(4). 391–396. 2 indexed citations

19.

Otsuka, Ryoko, Takeo Machida, & Masaru Wada. (2003). Hormonal correlations at transition from reproduction to molting in an annual life cycle of Humboldt penguins (Spheniscus humboldti). General and Comparative Endocrinology. 135(2). 175–185. 15 indexed citations

20.

Otsuka, Ryoko, et al.. (1998). Changes in Circulating LH, Sex Steroid Hormones, Thyroid Hormones and Corticosterone in Relation to Breeding and Molting in Captive Humboldt Penguins (Spheniscus humboldti) Kept in an Outdoor Open Display. ZOOLOGICAL SCIENCE. 15(1). 103–109. 16 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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