{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,11]],"date-time":"2026-04-11T23:08:09Z","timestamp":1775948889432,"version":"3.50.1"},"reference-count":28,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2022,4,12]],"date-time":"2022-04-12T00:00:00Z","timestamp":1649721600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJERPH"],"abstract":"<jats:p>This study examined the association between dental health conditions and scores on the University Personality Inventory (UPI) among university students in Japan. Participants were freshmen at Yamagata University between 2010 and 2019. Dental check-ups, including dental caries, periodontal disease, malocclusion, and temporomandibular disorders (TMD), and mental health screening using the UPI were performed; 12,433 students were included in the final analysis. A logistic regression analysis was performed to confirm the association between dental health conditions and &gt;30 UPI scores, which indicate the need to consult mental health professionals. Overall, students who required treatment for TMD had a 3.165-fold higher risk of &gt;30 UPI scores (OR = 3.165, 95% CI = 1.710\u20135.857). Periodontal disease and TMD in male participants (periodontal disease: OR = 1.329, 95% CI = 1.108\u20131.595; TMD: OR = 3.014, 95% CI = 1.107\u20138.204) and TMD in female participants (OR = 2.938, 95% CI = 1.340\u20136.445) were significant risk factors for &gt;30 UPI scores. Students requiring treatment for TMD were at risk of obtaining &gt;30 UPI scores. Although our study has several limitations, students with subjective symptoms (e.g., disturbance in opening the mouth) should take the UPI test or in some cases consult mental health professionals.<\/jats:p>","DOI":"10.3390\/ijerph19084622","type":"journal-article","created":{"date-parts":[[2022,4,12]],"date-time":"2022-04-12T02:48:59Z","timestamp":1649731739000},"page":"4622","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["A Cross-Sectional Survey on the Association between Dental Health Conditions and University Personality Inventory Scores among University Students: A Single-Center Study in Japan"],"prefix":"10.3390","volume":"19","author":[{"given":"Shigeo","family":"Ishikawa","sequence":"first","affiliation":[{"name":"Department of Dentistry, Oral and Maxillofacial Plastic and Reconstructive Surgery, Faculty of Medicine, Yamagata University, 2-2-2 Iida-nishi, Yamagata 990-9585, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0601-5863","authenticated-orcid":false,"given":"Naohiko","family":"Makino","sequence":"additional","affiliation":[{"name":"Yamagata University Health Administration Center, 1-4-12 Kojirakawa-machi, Yamagata 990-8560, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hitoshi","family":"Togashi","sequence":"additional","affiliation":[{"name":"Yamagata University Health Administration Center, 1-4-12 Kojirakawa-machi, Yamagata 990-8560, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0548-1654","authenticated-orcid":false,"given":"Nanami","family":"Ito","sequence":"additional","affiliation":[{"name":"Yamagata University Health Administration Center, 1-4-12 Kojirakawa-machi, Yamagata 990-8560, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Atsushi","family":"Tsuya","sequence":"additional","affiliation":[{"name":"Institute for Promotion of Medical Science Research, Faculty of Medicine, Yamagata University, 2-2-2 Iida-nishi, Yamagata 990-9585, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Makiko","family":"Hayasaka","sequence":"additional","affiliation":[{"name":"Yamagata University Health Administration Center, 1-4-12 Kojirakawa-machi, Yamagata 990-8560, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tsuneo","family":"Konta","sequence":"additional","affiliation":[{"name":"Department of Public Health and Hygiene, Graduate School of Medicine, Yamagata University, 2-2-2 Iida-nishi, Yamagata 990-9585, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Naoki","family":"Okuyama","sequence":"additional","affiliation":[{"name":"Department of Dentistry, Oral and Maxillofacial Plastic and Reconstructive Surgery, Faculty of Medicine, Yamagata University, 2-2-2 Iida-nishi, Yamagata 990-9585, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kazuyuki","family":"Yusa","sequence":"additional","affiliation":[{"name":"Department of Dentistry, Oral and Maxillofacial Plastic and Reconstructive Surgery, Faculty of Medicine, Yamagata University, 2-2-2 Iida-nishi, Yamagata 990-9585, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mitsuyoshi","family":"Iino","sequence":"additional","affiliation":[{"name":"Department of Dentistry, Oral and Maxillofacial Plastic and Reconstructive Surgery, Faculty of Medicine, Yamagata University, 2-2-2 Iida-nishi, Yamagata 990-9585, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2022,4,12]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"464","DOI":"10.1016\/j.jad.2021.11.006","article-title":"The influence of diagnosed mental health conditions and symptoms of depression and\/or anxiety on suicide ideation, plan, and attempt among college students: Findings from the Healthy Minds Study, 2018\u20132019","volume":"298","author":"Casey","year":"2022","journal-title":"J. Affect. Disord."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"72","DOI":"10.1007\/s11920-018-0935-6","article-title":"Be true to our schools-Models of care in college mental health","volume":"20","author":"Downs","year":"2018","journal-title":"Curr. Psychiatry Rep."},{"key":"ref_3","doi-asserted-by":"crossref","unstructured":"Sugawara, N., Yasui-Furukori, N., Sayama, M., and Shimoda, K. (2020). Factor structure of the University Personality Inventory in Japanese medical students. BMC Psychol., 8.","DOI":"10.1186\/s40359-020-00469-3"},{"key":"ref_4","doi-asserted-by":"crossref","unstructured":"Herbert, C., El Bolock, A., and Abdennadher, S. (2021). How do you feel during the COVID-19 pandemic? A survey using psychological and linguistic self-report measures, and machine learning to investigate mental health, subjective experience, personality, and behaviour during the COVID-19 pandemic among university students. BMC Psychol., 9.","DOI":"10.1186\/s40359-021-00574-x"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"1407","DOI":"10.1111\/inm.12896","article-title":"Undergraduate nursing students\u2019 resilience, challenges, and supports during corona virus pandemic","volume":"30","author":"Garvey","year":"2021","journal-title":"Int. J. Ment. Health Nurs."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"104864","DOI":"10.1016\/j.nedt.2021.104864","article-title":"Examining the associations between self-care practices and psychological distress among nursing students during the COVID-19 pandemic","volume":"100","author":"Brouwer","year":"2021","journal-title":"Nurse Educ. Today"},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"1761","DOI":"10.1513\/AnnalsATS.202101-033CME","article-title":"Telemonitoring for home-assisted ventilation: A narrative review","volume":"18","author":"Ackrivo","year":"2021","journal-title":"Ann. Am. Thorac. Soc."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"1464","DOI":"10.1111\/1471-0528.16668","article-title":"Effectiveness, safety and acceptability of no-test medical abortion (termination of pregnancy) provided via telemedicine: A national cohort study","volume":"128","author":"Aiken","year":"2021","journal-title":"BJOG"},{"key":"ref_9","first-page":"933","article-title":"Barriers and opportunities to the widespread adoption of telemedicine: A bi-country evaluation","volume":"192","author":"Vimarlund","year":"2013","journal-title":"Stud. Health Technol. Inf."},{"key":"ref_10","first-page":"3","article-title":"A study on the mental health of Japanese university students by the University Personality Inventory","volume":"3","author":"Huruhashi","year":"2020","journal-title":"Ann. Epidemiol. Public Health"},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"413","DOI":"10.1046\/j.1440-1819.1998.00411.x","article-title":"Mental health of visually and hearing impaired students from the viewpoint of the University Personality Inventory","volume":"52","author":"Yoshida","year":"1998","journal-title":"Psychiatry Clin. Neurosci."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"123","DOI":"10.1046\/j.1440-1819.2002.00947.x","article-title":"Self-esteem and mental health characteristics especially among lean students surveyed by University Personality Inventory","volume":"56","author":"Kajita","year":"2002","journal-title":"Psychiatry Clin. Neurosci."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"1856","DOI":"10.1016\/j.joms.2017.02.024","article-title":"Can a 10-Minute questionnaire identify significant psychological issues in patients with temporomandibular joint disease?","volume":"75","author":"Lin","year":"2017","journal-title":"J. Oral Maxillofac. Surg."},{"key":"ref_14","doi-asserted-by":"crossref","unstructured":"Choi, J., Price, J., Ryder, S., Siskind, D., Solmi, M., and Kisely, S. (2021). Prevalence of dental disorders among people with mental illness: An umbrella review. Aust. N. Z. J. Psychiatry, 48674211042239.","DOI":"10.1177\/00048674211042239"},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"e12774","DOI":"10.1111\/eos.12774","article-title":"Oral health-related quality of life among Brazilian adults with mental disorders","volume":"129","author":"Lopes","year":"2021","journal-title":"Eur. J. Oral Sci."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"e000583","DOI":"10.1136\/fmch-2020-000583","article-title":"Depression, periodontitis, caries and missing teeth in the USA, NHANES 2009-2014","volume":"8","author":"Aldosari","year":"2020","journal-title":"Fam. Med. Community Health"},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"277","DOI":"10.1177\/0706743716632523","article-title":"No mental health without oral health","volume":"61","author":"Kisely","year":"2016","journal-title":"Can. J. Psychiatry"},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"330","DOI":"10.1590\/1413-785220162406162873","article-title":"Temporomandibular dysfunction, stress and common mental disorder in university students","volume":"24","author":"Augusto","year":"2016","journal-title":"Acta Ortop. Bras."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"1154","DOI":"10.1002\/cre2.472","article-title":"Association of psychological distress and widespread pain with symptoms of temporomandibular disorders and self-reported bruxism in students","volume":"7","author":"Huhtela","year":"2021","journal-title":"Clin. Exp. Dent. Res."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"310","DOI":"10.1080\/08869634.2019.1622869","article-title":"Comparisons of measures that evaluate oral and general health quality of life in patients with temporomandibular disorder and chronic pain","volume":"39","author":"Balik","year":"2021","journal-title":"Cranio"},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"127","DOI":"10.17219\/dmp\/132978","article-title":"Role of mental state in temporomandibular disorders: A review of the literature","volume":"58","author":"Florjanski","year":"2021","journal-title":"Dent. Med. Probl."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"62","DOI":"10.1080\/13548506.2020.1858489","article-title":"Psychological status of TMD patients, orthodontic patients and the general population during the COVID-19 pandemic","volume":"26","author":"Wu","year":"2021","journal-title":"Psychol. Health Med."},{"key":"ref_23","doi-asserted-by":"crossref","unstructured":"Colonna, A., Guarda-Nardini, L., Ferrari, M., and Manfredini, D. (2021). COVID-19 pandemic and the psyche, bruxism, temporomandibular disorders triangle. Cranio, 1\u20136.","DOI":"10.1080\/08869634.2021.1989768"},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"e179","DOI":"10.1093\/milmed\/usaa374","article-title":"Bruxism and stress among veterans with Gulf War Illness","volume":"186","author":"Carter","year":"2020","journal-title":"Mil. Med."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"117","DOI":"10.1002\/cre2.258","article-title":"Self-reported stress, coping ability, mental status, and periodontal diseases among police recruits","volume":"6","author":"Ramlogan","year":"2020","journal-title":"Clin. Exp. Dent. Res."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"221","DOI":"10.1111\/jre.12705","article-title":"Common mental disorder is associated with periodontitis","volume":"55","author":"Coelho","year":"2020","journal-title":"J. Periodontal. Res."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"e540","DOI":"10.1097\/SCS.0000000000001042","article-title":"Psychologic health status of patients undergoing orthognathic surgery","volume":"25","author":"Yao","year":"2014","journal-title":"J. Craniofac. Surg."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"828","DOI":"10.1016\/j.tripleo.2009.07.044","article-title":"Evaluation on the psychosocial status of orthognathic surgery patients","volume":"108","author":"Kim","year":"2009","journal-title":"Oral Surg. Oral Med. Oral Pathol. Oral Radiol. Endodontol."}],"container-title":["International Journal of Environmental Research and Public Health"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1660-4601\/19\/8\/4622\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T22:52:12Z","timestamp":1760136732000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1660-4601\/19\/8\/4622"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,4,12]]},"references-count":28,"journal-issue":{"issue":"8","published-online":{"date-parts":[[2022,4]]}},"alternative-id":["ijerph19084622"],"URL":"https:\/\/doi.org\/10.3390\/ijerph19084622","relation":{},"ISSN":["1660-4601"],"issn-type":[{"value":"1660-4601","type":"electronic"}],"subject":[],"published":{"date-parts":[[2022,4,12]]}}}