東北大学研究者紹介 - Hazem Abbas Farouk Abbas

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顔写真

ハゼム　アツバス　フアルウク　アツバス

Hazem Abbas Farouk Abbas

所属

大学院歯学研究科　歯科学専攻　地域共生社会歯学講座（国際歯科保健学分野）

職名

助教

学位

博士（歯学）（東北大学）
修士（口腔科学）（東北大学）

researchmap

https://researchmap.jp/HazemAbbas_32

J-GLOBAL ID

202301006792037468

ORCID

https://orcid.org/0000-0003-1529-290X

経歴 3

2023年4月～継続中

東北大学　助教
2013年2月～ 2016年8月

厚生省（エジプト）また私立デンタルクリニック　歯科医師
2011年11月～ 2012年10月

カイロ大学と厚生省で臨床研修歯科医師

学歴 3

東北大学　大学院歯学研究科　博士課程

2019年10月～ 2023年3月
東北大学　大学院歯学研究科　修士課程

2016年9月～ 2019年3月
カイロ大学（エジプト）　歯学部

2006年9月～ 2011年6月

委員歴 5

International Association for Dental Research (IADR) - member

2017年1月～継続中
IADR Fellowships Committee member - International Association for Dental Research (IADR)

2025年6月～ 2028年6月
JDR Clinical & Translational Research Journal - Scientific Advisory Board member

2025年1月～ 2028年1月
International Director of the Behavioral, Epidemiologic and Health Services Research Group (BEHSR) of the IADR

2023年6月～ 2025年6月
Executive Committee Member of the Behavioral, Epidemiologic and Health Services Research Group (BEHSR) of the IADR

2022年6月～ 2023年6月

所属学協会 1

International Association for Dental Research (IADR)

～継続中

研究キーワード 7

高齢化
歯科公衆衛生
社会疫学
グローバルオーラルヘルス
Oral health services utilization
Oral health policies' research
Structural determinants of Health

研究分野 1

ライフサイエンス / 社会系歯学 /

受賞 4

東北大学大学院歯学研究科博士課程における「卓越した研究業績」に対する優秀研究賞の認定証 - 2023年

2023年3月　東北大学大学院歯学研究科　博士課程における挙げ優秀学位研究賞
2022年度 JADR / GC学術奨励賞

2022年6月　国際歯科研究学会日本部会（JADR）　歯磨き習慣とCOVID-19症状の関連性
ライオン学術賞

2021年7月　国際歯科研究学会（ＩＡＤＲ）　日本の高齢者コホート研究(JAGES)から見えた残存歯・義歯装着と社会的孤立の関連
2022−2023 Top 10 cited article

2024年4月　日本の高齢者コホート研究(JAGES)から見えた残存歯・義歯装着と社会的孤立の関連

論文 24

Multiple Tobacco Product Use and Dental Pain: A Cross-sectional Study

T. Yamamoto, H. Abbas, M. Sato, M. Iwasaki, T. Tabuchi

JDR Clinical & Translational Research　2026年8月6日
出版者・発行元： SAGE Publications
DOI： 10.1177/23800844261467716 　

ISSN：2380-0844

eISSN：2380-0852

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Introduction: Although individual tobacco products, including new tobacco products, have been associated with adverse oral health outcomes, few studies have examined the association between multiple tobacco product (MTP) use and dental pain as an indicator of current oral health status. Methods: We conducted a cross-sectional study using data from a nationwide internet survey in Japan. The 2023 survey included the outcome variable, current tobacco product use, and most covariates; however, it did not include the number of remaining teeth, an oral health–related covariate relevant to interpreting dental pain. Therefore, we included participants who responded to the 2023 survey and for whom information on remaining teeth was available from the 2022 survey. Current tobacco product use was assessed for 6 product types: cigarettes, heated tobacco products, electronic cigarettes, cigars, pipe/water pipes, and smokeless tobacco. Participants were categorized as having no current product use, single-product use, or MTP use. The outcome was self-reported dental pain within the past week. Covariates were sex, age, education, household income, living alone, marital status, drinking, self-rated health, psychological distress, number of remaining teeth, and daily toothbrushing. We used multivariable modified Poisson regression to estimate adjusted prevalence ratios (aPRs) and 95% CIs. Results: We analyzed 19,703 participants; the mean age was 50.2 y (SD, 16.9) and 10,165 (51.6%) were men. Overall, 2518 participants (12.8%) reported dental pain within the past week, 2463 (12.5%) used a single tobacco product, and 1040 (5.3%) used MTPs. After adjustment for all covariates, MTP use was associated with a higher prevalence of dental pain (single-product use: aPR, 1.03 [95% CI, 0.92–1.15]; MTP use: aPR, 1.39 [95% CI, 1.25–1.54]). Conclusions: MTP use was associated with dental pain. Longitudinal studies are needed to clarify the temporal and causal relationships between MTP use and oral health. Knowledge Transfer Statement: The findings of this study suggest that collaboration between policy makers in dental and oral health and those in tobacco control may be important for addressing oral health disparities between tobacco users and nonusers.
Adverse and positive childhood experiences and dental pain in adulthood: a cross-sectional study

Takafumi Yamamoto, Hazem Abbas, Misuzu Sato, Masanori Iwasaki, Takahiro Tabuchi

Scientific Reports　2026年7月10日
出版者・発行元： Springer Science and Business Media LLC
DOI： 10.1038/s41598-026-60490-1 　

eISSN：2045-2322
Oral Frailty, Social Frailty, and 6-Year Risk of Long-term Care Onset

I. Susanti, H. Abbas, K. Takeuchi, J. Aida, K. Osaka

JDR Clinical & Translational Research　2026年7月3日
出版者・発行元： SAGE Publications
DOI： 10.1177/23800844261452968 　

ISSN：2380-0844

eISSN：2380-0852

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Objectives: This 6-y longitudinal study examined the relationship between oral frailty measured in 2016 and the onset of long-term care (LTC) measured in 2022 and investigated whether social frailty (SF) measured in 2019 mediates the association among community-dwelling older adults aged ≥65 y in Japan. Methods: Four waves (2013–2022) of data from the Japan Gerontological Evaluation Study (JAGES) were analyzed. Oral frailty was classified into robust, pre–oral frail, and oral frail categories. LTC onset was identified through official certification records. Logistic regression models estimated odds ratios (ORs) for LTC onset after adjusting for sociodemographic, behavioral, and health-related confounders measured in 2013. Causal mediation analysis using parametric logistic regression models was used to assess social frailty (robust and social frail) as a mediating pathway. Results: During 6 y of follow-up among 3,559 participants (48.7% males, mean [SD] age 71.9 [4.8]), 6.1% developed LTC dependency. Overall, a clear gradient relationship was observed. The oral frail group had a 47% likelihood of enrolling in LTC compared with the robust group (adjusted OR = 1.47; 95% confidence interval [CI], 1.01–2.17), while the pre–oral frail group was 39% more likely to enroll in LTC (adjusted OR = 1.39; 95% CI, 0.96–2.02) than the robust group. Furthermore, SF mediated approximately 7% to 19% of the association between oral frailty and LTC onset, indicating that declining oral function contributes to social vulnerability, which in turn accelerates the dependency. Moreover, sensitivity analysis restricted to a complete data scenario attenuated the relationship, likely due to reduced power and missing data. Conclusion: These findings suggest that oral frailty may be an important predictor of long-term care onset, with part of the association potentially explained by social frailty. Maintaining oral health and promoting social participation may be important components of strategies aimed at supporting healthy aging and potentially reducing the risk of care dependency. Knowledge Transfer Statement: This longitudinal cohort study shows that oral frailty increased the risk of long-term care dependency among older adults after 6 years, partly through social frailty. For patients and clinicians, maintaining natural dentition and oral function might help preserve social engagement and delay care dependency. For policymakers, these findings could guide the provision of oral health initiatives, such as integrating oral health promotion and social participation strategies into healthy aging and long-term care prevention policies.
Dental prosthesis use and subsequent functional capacity decline among older adults: a three-year cohort study based on self-reported measures from the JAGES

Mari Nakagawa, Kenji Takeuchi, Taro Kusama, Hazem Abbas, Katsunori Kondo, Hiroshi Egusa, Ken Osaka

Frontiers in Oral Health　7　2026年5月7日
出版者・発行元： Frontiers Media SA
DOI： 10.3389/froh.2026.1784871 　

eISSN：2673-4842

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Background Functional capacity (FC) is a key determinant of healthy aging. Oral health deterioration, particularly tooth loss, has been associated with FC decline among older adults. Although dental prostheses may mitigate functional deterioration by restoring oral function, longitudinal evidence on their protective effects on FC, especially across specific domains, remains limited. This study investigated the association between dental prosthesis use and the decline in overall and domain-specific FC among older Japanese adults experiencing tooth loss. Methods We conducted a 3-year prospective cohort study using data from the Japan Gerontological Evaluation Study (JAGES). Participants were living independently older adults aged ≥65 years with &lt;20 teeth at baseline (2016), followed up in 2019. Dental prosthesis use (removable dentures, fixed prostheses, and/or implants) was assessed by self-report at baseline and dichotomized as use vs. non-use. FC was measured using the Tokyo Metropolitan Institute of Gerontology Index of Competence (TMIG-IC), including total score and subdomains: instrumental activities of daily living (IADL), intellectual activity, and social role. FC decline was defined as a decrease of ≥1 point in the TMIG-IC score during follow-up. Modified Poisson regression with robust variance was used to estimate the relative risks (RRs) and 95% confidence intervals (CIs), adjusting for sociodemographic factors, health behaviors, comorbidities, and number of remaining teeth. Results Among 22,632 eligible participants (mean age at baseline: 74.0 years, SD = 5.7; 51.4% male), 7,573 participants (33.5%) experienced a decline in total FC. Dental prosthesis use was significantly associated with a lower risk of decline in the total TMIG-IC score [RR = 0.91 (95% CI: 0.86–0.97)] compared with no use. For the TMIG-IC subdomain, we observed a significant association between dental prosthesis use and a lower risk of decline in intellectual activity [RR = 0.87 (95% CI: 0.80–0.96)]. Conclusions This large-scale cohort study demonstrated that the use of dental prostheses was associated with a reduced risk of FC decline in older adults, particularly in the intellectual activity domain. Because prosthesis use and FC were assessed by self-reported and residual confounding may remain, further studies are warranted to clarify the potential role of prosthodontic rehabilitation in maintaining FC in later life.
Oral Frailty and Social Frailty Among Older Japanese

Isi Susanti, Hazem Abbas, Kenji Takeuchi, Jun Aida, Ken Osaka

2026年2月17日
出版者・発行元：
DOI： 10.1111/ger.70056 　

ISSN：0734-0664

eISSN：1741-2358
With the Rise of Right‐Wing Governments, Why a One‐Time “50% Health Tax” Will Be a Hard Sell and How It Could Be Implemented

Hazem Abbas, Maha El Tantawi, Manami Hoshi‐Harada, Kenji Takeuchi, Ken Osaka, Carol C. Guarnizo‐Herreño, Marco A. Peres

2025年12月30日
出版者・発行元：
DOI： 10.1111/cdoe.70051 　

ISSN：0301-5661

eISSN：1600-0528
Oral health and happiness after 3-years with causal mediation of oral functions

Hazem Abbas, Kenji Takeuchi, Taro Kusama, Sakura Kiuchi, Katsunori Kondo, Ken Osaka

Journal of Dentistry　162　106036-106036　2025年11月
出版者・発行元： Elsevier BV
DOI： 10.1016/j.jdent.2025.106036 　

ISSN：0300-5712
Oral Health and Social Isolation After 6 Years: Mediation of Oral Functions

Hazem Abbas, Kenji Takeuchi, Taro Kusama, Sakura Kiuchi, Ken Osaka

Community Dentistry and Oral Epidemiology　2025年10月26日
出版者・発行元： Wiley
DOI： 10.1111/cdoe.70035 　

ISSN：0301-5661

eISSN：1600-0528

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ABSTRACT Objectives Tooth loss was longitudinally associated with social isolation. The absence of dental prosthesis use was an additional risk factor. However, the mediating pathways for this association are unknown. The aim of this cohort study was to estimate the mediating effect of three oral functions: speaking, smiling and chewing observed at baseline on the association between oral health at baseline and social isolation after 6 years of follow‐up. Methods The 2010–2016 panel data from 6103 functionally independent participants aged ≥ 65 years who were not socially isolated at baseline was used from the Japan Gerontological Evaluation Study (JAGES). Causal mediation analysis using parametric logistic regression models was used to calculate the natural direct effect (NDE), the natural indirect effect (NIE), and the total effect. Social isolation was derived from a 5‐point index and dichotomised (0/3 = not isolated, 4/5 = isolated). The confounders observed at baseline were age, sex, educational attainment, income, activities of daily living, living area, and having depressive symptoms assessed using the geriatric depression scale (GDS‐15). Results The mean age of the participants was 72.4 years (SD = ±5.1), and 44.7% were males. Social isolation was observed at follow‐up among 3.6% of participants ( n = 220). The cumulative incidence rate of socially isolated participants among those with ≥ 20 teeth was 2.9% increasing gradually to 3.2%, 3.5%, 3.7% and 7.2% among those with 10–19 teeth and used dental prosthesis, 10–19 teeth and did not use the dental prosthesis, 0–9 teeth and used dental prosthesis, and 0–9 teeth and did not use the dental prosthesis respectively. Compared with those with ≥ 20 teeth, having difficulty in speaking [NIE odds ratio (OR) = 1.02, 95% confidence interval (CI) = 0.93–1.11], problems in smiling (NIE OR = 1.02, 95% CI = 0.93–1.10) and difficulty in chewing (NIE OR = 1.04, 95% CI = 0.94–1.14) might have mediated the association for those with 10–19 teeth and used dental prosthesis as well as for those with 10–19 teeth without dental prosthesis (NIE OR = 1.02, 95% CI = 0.94–1.10), (NIE OR = 1.02, 95% CI = 0.93–1.11) and (NIE OR = 1.02, 95% CI = 0.93–1.11) respectively. While they might not have mediated the association for those with 0–9 teeth with and without dental prosthesis use. Conclusion With low precision and uncertain estimates, limited oral function might have mediated the association between tooth loss (10–19 with and without dental prosthesis use groups) and social isolation over 6 years. It was uncertain whether a mediation effect of oral functions was observed for those with 0–9 teeth with and without dental prosthesis use.
AI-driven innovations for dental implant treatment planning: A systematic review

Kyaw Zaww, Hazem Abbas, Juan Ramón Vanegas Sáenz, Guang Hong

Journal of Prosthodontic Research　2025年
出版者・発行元： Japan Prosthodontic Society
DOI： 10.2186/jpr.jpr_d_24_00338 　

ISSN：1883-1958

eISSN：1883-9207
Childhood socioeconomic status affects dental pain in later life 査読有り

Yamamoto T, Cooray U, Kusama T, Kiuchi S, Abbas H, Kondo K, Osaka K, Aida J

Journal of Dental Research Clinical & Translational Research　2024年6月

DOI： 10.1177/23800844241271740 　
Challenges and way forward for implementation of sugar taxation in the Middle East and North Africa (<scp>MENA</scp>)

Hazem Abbas, Carol C. Guarnizo‐Herreño, Maha El Tantawi, Georgios Tsakos, Marco A. Peres

Community Dentistry and Oral Epidemiology　2024年4月8日
出版者・発行元： Wiley
DOI： 10.1111/cdoe.12955 　

ISSN：0301-5661

eISSN：1600-0528

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Abstract Background Over consumption of added sugar beyond the World Health Organization (WHO) recommended level of 10% of daily energy intake has well‐established negative health consequences including oral diseases. However, the average consumption of added sugar in the Middle East and North Africa region (MENA—World Bank's regional classification) is 70% higher than the WHO recommended level. Imposing taxes on added sugar has been proposed by the WHO to decrease its consumption. Yet, only 21.6% of the total MENA population are covered by taxation policies targeting added sugar. Challenges Well‐recognized challenges for the implementation of sugar taxation in MENA include the tactics used by the food and beverage industry to block these type of policies. However, there are also other unfamiliar hurdles specific to MENA. Historically, there have been incidents of protest and riots partially sparked by increased price of basic commodities, including sugar, in MENA countries. This may affect the readiness of policy makers in the region to impose added sugar taxes. In addition, there are also cultural, lifestyle and consumption behavioural barriers to implementing added sugar taxation. Ultra‐processed foods and sugar‐sweetened‐beverages (SSBs) rich in added sugar are perceived by many in MENA as essential treats regardless of their health risks. Furthermore, some countries even provide subsidies for added sugar. Also, (oral) healthcare providers generally do not engage in policy advocacy mainly due to limited training on health policy. Ways forward Here, we discuss these challenges and suggest some ways forward such as (1) support from a health‐oriented political leadership, (2) raising public awareness about the health risks of over consumption of sugar, (3) transparency during the policy‐cycle development process, (4) providing a free and safe environment for a community dialogue around the proposed policy, (5) training of (oral) healthcare professionals on science communication and policy advocacy in local lay language/dialect, ideally evidence informed from local/regional studies, (6) selecting the appropriate political window of opportunity to introduce a sugar tax policy, and (7) clear and strict conflict of interest regulations to limit the influence of commercial players on health policy.
Estimating the prevalence of and clarifying factors associated with multiple tobacco product use in Japan: a cross-sectional study in 2022

Takafumi Yamamoto, Hazem Abbas, Upul Cooray, Tetsuji Yokoyama, Takahiro Tabuchi

Journal of Epidemiology　2024年
出版者・発行元： Japan Epidemiological Association
DOI： 10.2188/jea.je20240153 　

ISSN：0917-5040

eISSN：1349-9092
Exposure to household dysfunction at childhood and later number of teeth among older Japanese adults: A life course study from the Japan Gerontological Evaluation Study. 国際誌

Hazem Abbas, Kenji Takeuchi, Sakura Kiuchi, Katsunori Kondo, Ken Osaka

Journal of public health dentistry　83　(3)　299-308　2023年7月

DOI： 10.1111/jphd.12582 　

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OBJECTIVES: The aim of this retrospective cohort study was to investigate the life course association between exposure to two household dysfunctions (father violence against mother and parental divorce) at childhood (≤18 years) with later number of remaining teeth (≥65 years) in functionally independent older Japanese population. This was the first study to investigate this research question in the Asian context. METHODS: The Japan Gerontological Evaluation study (JAGES) self-reported retrospective data gathered in 2013 was used (n = 21,604). Each household dysfunction was binary variable (Yes/No), while the five categories of the number of remaining teeth were ≥20, 10-19, 5-9, 1-4, and no teeth. Sex-stratified ordered logistic regression models were used to calculate the odds ratios (OR) of having fewer teeth. The models were adjusted for age, economic adversity in childhood, educational attainment, comorbidities, and smoking status. RESULTS: Overall, 46.4% were men and a total of 1149 participants (5.3%) experienced household dysfunction at childhood [men = 642 (6.4%), women = 507 (4.4%)]. The regression models showed higher OR of having fewer teeth among men who experienced a household dysfunction [OR = 1.16; 95% Confidence interval (CI) = 1.00-1.36] than men who did not. This association was not observed among women [OR = 0.94; 95% CI = 0.79-1.13]. Similar magnitude and direction of the association was observed among men but not among women when the two components of household dysfunction were used separately and aggregately as exposure variables. CONCLUSION: An exposure to a household dysfunction at childhood was associated with having fewer teeth in later life among men but not among women.
The role of science communication and academic health advocacy in improving population oral health and tackling inequalities. 国際誌

Hazem Abbas, Kenji Takeuchi, Ken Osaka, Carol C Guarnizo-Herreño, Georgios Tsakos, Richard G Watt

Community dentistry and oral epidemiology　2023年6月6日

DOI： 10.1111/cdoe.12882 　

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Oral conditions are a public health problem globally and stark oral health inequalities exist between and within countries. Yet, oral diseases are rarely considered as a health priority and evidence-informed policy generation is challenging. Science communication and health advocacy are critical in that respect. However, due to time limitations, research workload and other factors, academics are usually hindered from participating in such lengthy endeavours. Here, we make the case that 'science communication and health advocacy task forces' should be a priority at academic institutions. The two main duties of these task forces are knowledge transfer about the burden of oral conditions and patterns of inequalities, and their underlying social and commercial determinants, and advocacy and mediation between the stakeholders involved directly or indirectly in policy making. These interdisciplinary task forces, including both academics and non-academics, should collectively have skills that include (1) knowledge about oral health, dental public health and epidemiology, (2) ability to communicate clearly and coherently and make the case in both lay and scientific language terms, (3) familiarity with digital and social media platforms and ability to create visual aids, videos and documentaries, (4) good negotiation skills and (5) maintaining scientific transparency and avoiding getting involved in confrontation with political parties. In the current context, the role of the academic institutions should not only be the production of knowledge, but also the active transferability and application of this knowledge towards public benefit.
Association Between Toothbrushing Habits and COVID-19 Symptoms. 国際誌

Hazem Abbas, Kenji Takeuchi, Shihoko Koyama, Ken Osaka, Takahiro Tabuchi

International dental journal　73　(2)　302-310　2023年4月

DOI： 10.1016/j.identj.2022.07.011 　

ISSN：0020-6539

eISSN：1875-595X
Does remaining teeth and dental prosthesis associate with social isolation? A six-year longitudinal study from the Japan Gerontological Evaluation Study (JAGES). 国際誌

Hazem Abbas, Jun Aida, Upul Cooray, Takaaki Ikeda, Shihoko Koyama, Katsunori Kondo, Ken Osaka

Community dentistry and oral epidemiology　51　(2)　345-354　2023年4月

DOI： 10.1111/cdoe.12746 　

ISSN：0301-5661

eISSN：1600-0528
Oral status and homebound status: A 6‐year bidirectional exploratory prospective cohort study 国際誌

Hazem Abbas, Jun Aida, Sakura Kiuchi, Katsunori Kondo, Ken Osaka

Oral Diseases　29　(3)　1291-1298　2023年4月

DOI： 10.1111/odi.14039 　

ISSN：1354-523X

eISSN：1601-0825
Large Contribution of Oral Status for Death Among Modifiable Risk Factors in Older Adults: The Japan Gerontological Evaluation Study (JAGES) Prospective Cohort Study. 国際誌

Noriko Nakazawa, Taro Kusama, Upul Cooray, Takafumi Yamamoto, Sakura Kiuchi, Hazem Abbas, Tatsuo Yamamoto, Katsunori Kondo, Ken Osaka, Jun Aida

The journals of gerontology. Series A, Biological sciences and medical sciences　78　(1)　167-173　2023年1月26日

DOI： 10.1093/gerona/glac052 　

eISSN：1758-535X
Association among the number of teeth, dental prosthesis use, and subjective happiness: A cross-sectional study from the Japan Gerontological Evaluation study (JAGES). 国際誌

Hazem Abbas, Jun Aida, Katsunori Kondo, Ken Osaka

The Journal of prosthetic dentistry　2022年4月19日

DOI： 10.1016/j.prosdent.2022.02.014 　

ISSN：0022-3913

eISSN：1097-6841
Oral Status and Dementia Onset: Mediation of Nutritional and Social Factors

S. Kiuchi, U. Cooray, T. Kusama, T. Yamamoto, H. Abbas, N. Nakazawa, K. Kondo, K. Osaka, J. Aida

Journal of Dental Research　101　(4)　420-427　2022年4月

DOI： 10.1177/00220345211049399 　

ISSN：0022-0345

eISSN：1544-0591
Factors associated with smoking behaviour changes during the COVID-19 pandemic in Japan: A 6-month follow-up study

Takafumi Yamamoto, Hazem Abbas, Makiko Kanai, Tetsuji Yokoyama, Takahiro Tabuchi

Tobacco Control　2022年

DOI： 10.1136/tc-2022-057353 　

ISSN：0964-4563

eISSN：1468-3318
Examining the associations between oral health and social isolation: A cross-national comparative study between Japan and England 国際誌

Shihoko Koyama, Masashige Saito, Noriko Cable, Takaaki Ikeda, Taishi Tsuji, Taiji Noguchi, Hazem Abbas, Isao Miyashiro, Ken Osaka, Katsunori Kondo, Richard G. Watt, Jun Aida

Social Science & Medicine　277　113895-113895　2021年5月
出版者・発行元： Elsevier {BV}
DOI： 10.1016/j.socscimed.2021.113895 　

ISSN：0277-9536

eISSN：1873-5347
口腔の健康と全身の健康の関連の文献レビューと因果推論手法の提案：口腔の健康と認知症のレビュー

相田潤, 山本貴文, 木内桜, Hazem Abbas

厚生労働科学研究費補助金（循環器疾患・糖尿病等生活習慣病対策総合研究事業）分担研究報告書　2020年
出版者・発行元：厚生労働省
Income or education, which has a stronger association with dental implant use in elderly people in Japan? 国際誌

Hazem Abbas, Jun Aida, Masashige Saito, Georgios Tsakos, Richard G. Watt, Shigeto Koyama, Katsunori Kondo, Ken Osaka

International Dental Journal　69　(6)　454-462　2019年12月27日
出版者・発行元： Wiley
DOI： 10.1111/idj.12491 　

ISSN：0020-6539

eISSN：1875-595X

︎全件表示 ︎最初の5件までを表示

講演・口頭発表等 4

小児期における家庭機能不全とその後の日本人高齢者の歯の本数：日本老年学的評価研究によるライフコース研究。

2023年6月25日
歯磨き習慣とCOVID-19症状の関連性。

2022年6月20日
高齢者における歯の健康と社会的に孤立の関係性

2021年7月22日
インプラント使用における社会的格差

2018年7月24日

共同研究・競争的資金等の研究課題 2

公益財団法人富徳会２０２２年度留学研究者研究助成金支給

研究機関：Futokukai foundation

2022年8月～ 2023年3月
2020年度東北大学大学院歯学研究科旅費助成金

社会貢献活動 6

査読者 Scientific Advisory Board member

2025年1月～継続中
査読者

2024年5月～継続中
査読者

2023年7月～継続中
査読者

2023年7月～継続中
査読者

2021年6月～継続中
査読者

2018年10月～継続中

︎全件表示 ︎最初の5件までを表示

メディア報道 4

高齢者における歯の本数と閉じこもりとの関連

株式会社THF

2022年1月

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東北大学大学院歯学研究科国際歯科保健学分野博士課程のハゼム・アッバス氏が、歯の本数が20本未満の高齢者は、20本以上と比べて、６年後の閉じこもりが 1.42倍多くなることを公表した。外出頻度が週１回未満の状態である閉じこもりは、社会的孤立や身体活動量の低下を招き、要介護リスクの増加などにつながる可能性がある。アッバス氏らは、日本の13市町村が参加した日本老年学的評価研究のデータを使い、 2010年時点で要介護状態でない65歳以上の高齢者２万6579人を対象に、6年間の追跡研究をおこなった。歯の本数と口腔機能が将来の閉じこもりと関連するかを検討した結果、歯の本数が20本未満だと20本以上と比べて６年後の閉じこもりは 1.42倍多く、咀嚼困難はそうでない場合に比べて1.28倍多かった。咀嚼困難や歯の本数が20本未満であることと閉じこもりとの関連の効果は、年齢が70歳から75歳になることと同程度だった。
歯のインプラント治療収入が高い人ほど受けている（約5倍）

JAGES プレスリリース

2020年3月

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歯のインプラント治療は、歯周病やむし歯の治療などで歯を抜くことになった場合に、人工の歯を植える有用な治療方法です。日本では国民皆保険でカバーされていないため（自費治療のため）、高価な治療費を支払うのが難しい人では利用が少ないことが予想されますが、そのことを示すデータはありませんでした。世界的にもインプラント利用の社会格差の研究はほとんどありません。本研究では、65 歳以上の地域在住高齢者約 18 万人を調査し、所得や学歴によりインプラント治療の経験に差があるか調べました。その結果、年齢や性別、地域の歯科医院の多さを考慮したうえで、収入が低い群に比べて高い群で 4.85 倍、学歴が低い群に比べて高い群で 2.13 倍、インプラントを利用していました。インプラントは自費治療であるため、収入が低い人が受けにくいという実態が客観的なデータで示されました。歯科治療の利用が収入で変わってしまうという格差を解消するためには、保険診療の拡大が必要かもしれません。多様な新しい医療技術が登場する中、どの医療技術を保険でカバーするのか、質調整生存年（QALY）を用いた客観的な検討が必要でしょう。
歯数20本未満の高齢者補綴物で幸福感増加－医科歯科大らが解明

日本歯科新聞社

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歯が20本未満の場合は、歯科補綴物を使用するか否かで幸福感に違いが出る－。東京医科歯科大学大学院医歯学総合研究科の相田潤教授と東北大学大学院歯学研究科の小坂健教授、ハゼム・アッバス大学院生らの研究グループが明らかにしたもの。
歯の健康孤立防ぐ鍵に高齢者２万６０００人を調査

山陰中央新法デジタル