{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,10]],"date-time":"2026-09-10T20:37:59Z","timestamp":1789072679706,"version":"build-2803163510"},"reference-count":46,"publisher":"Springer Science and Business Media LLC","issue":"1","license":[{"start":{"date-parts":[[2021,5,4]],"date-time":"2021-05-04T00:00:00Z","timestamp":1620086400000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2021,5,4]],"date-time":"2021-05-04T00:00:00Z","timestamp":1620086400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["BMC Oral Health"],"published-print":{"date-parts":[[2021,12]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec>\n                <jats:title>Background<\/jats:title>\n                <jats:p>This cross-sectional study aimed to examine the relationship between sleep habits and oral disease symptoms in adolescents.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Methods<\/jats:title>\n                <jats:p>Among 62,276 adolescents who participated in the 13th Korea Youth Risk Behavior Web-based Survey (2017), we selected a total of 54,766 adolescents (age, 12\u201318\u00a0years; male, 49.9%) for the final analysis, after excluding those who did not report their sleep duration. The 13th Korea Youth Risk Behavior Web-based Survey data were obtained from a stratified, multistage, clustered sample. Independent variables included general characteristics, oral health behavior, sleep types, sleep duration, and sleep quality; dependent variables comprised oral disease symptoms. Sleep was categorized according to bedtime astype A (bedtime\u2009&lt;\u20091\u00a0a.m.) and type B (bedtime\u2009\u2265\u20091\u00a0a.m.). Data were analyzed using logistic regression analysis. Statistical significance was set at <jats:italic>p<\/jats:italic>\u2009&lt;\u20090.05.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>After adjusting for all covariates, adolescents with type A sleep had a higher risk of toothache on chewing (OR\u2009=\u20091.08, 95% CI 1.02\u20131.15) than adolescents with type B. Adolescents who slept for 6\u00a0h or less each night had a higher risk of pain in the tongue and buccal mucosa (OR\u2009=\u20091.35, 95% CI 1.18\u20131.54), gingival pain, and bleeding (OR\u2009=\u20091.31, 95% CI 1.19\u20131.45) than those who slept for more than 8\u00a0h. Adolescents with low quality of sleep had a higher risk of\u00a0toothache or throbbing (OR\u2009=\u20091.70, 95% CI 1.60\u20131.81), toothache on chewing (OR\u2009=\u20091.73, 95% CI 1.65\u20131.82), and halitosis (OR\u2009=\u20091.51, 95% CI 1.41\u20131.59) than those with high quality of sleep.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusions<\/jats:title>\n                <jats:p>Our findings indicate that some oral symptoms are related to sleep duration and quality. It is essential to inculcate good sleeping habits in adolescents by emphasizing the effects of inadequate sleep duration and quality.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1186\/s12903-021-01575-3","type":"journal-article","created":{"date-parts":[[2021,5,4]],"date-time":"2021-05-04T02:02:41Z","timestamp":1620093761000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":13,"title":["Association between sleep habits and symptoms of oral disease in adolescents: the 2017 Korea Youth Risk Behavior Web-based Survey"],"prefix":"10.1186","volume":"21","author":[{"given":"Eun-Sil","family":"Choi","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hyun-Sun","family":"Jeon","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7234-9226","authenticated-orcid":false,"given":"So-Jung","family":"Mun","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2021,5,4]]},"reference":[{"key":"1575_CR1","doi-asserted-by":"publisher","first-page":"31","DOI":"10.2174\/1874306401105010031","volume":"5","author":"L Aldabal","year":"2011","unstructured":"Aldabal L, Bahammam AS. Metabolic, endocrine, and immune consequences of sleep deprivation. Open Respir Med J. 2011;5:31\u201343. https:\/\/doi.org\/10.2174\/1874306401105010031.","journal-title":"Open Respir Med J"},{"key":"1575_CR2","doi-asserted-by":"publisher","DOI":"10.1155\/2016\/9158195","author":"RC Wiener","year":"2016","unstructured":"Wiener RC. Relationship of routine inadequate sleep duration and periodontitis in a nationally representative sample. Sleep Disord. 2016. https:\/\/doi.org\/10.1155\/2016\/9158195.","journal-title":"Sleep Disord"},{"issue":"4","key":"1575_CR3","doi-asserted-by":"publisher","first-page":"263","DOI":"10.1016\/j.diabet.2014.12.004","volume":"41","author":"S Larcher","year":"2015","unstructured":"Larcher S, Benhamou PY, Pepin JL, Borel AL. Sleep habits and diabetes. Diabetes Metab. 2015;41(4):263\u201371. https:\/\/doi.org\/10.1016\/j.diabet.2014.12.004.","journal-title":"Diabetes Metab"},{"key":"1575_CR4","unstructured":"National Sleep Foundation. Teens and sleep. https:\/\/www.sleepfoundation.org\/articles\/teens-and-sleep. Accessed 10 March 2019."},{"key":"1575_CR5","unstructured":"Statistics Korea. Survey on child and adolescent human rights: average sleep time. http:\/\/kosis.kr\/statHtml\/statHtml.do?orgId=402&tblId=DT_ES2017_031&conn_path=I2. Accessed 10 March 2019."},{"key":"1575_CR6","first-page":"126","volume":"30","author":"KI Choi","year":"2012","unstructured":"Choi KI. An effect of sleeping time on school adaptation of youths: mediated by depression and ability of self-protection. Forum Youth Cult. 2012;30:126\u201366.","journal-title":"Forum Youth Cult"},{"issue":"1","key":"1575_CR7","doi-asserted-by":"publisher","first-page":"33","DOI":"10.1080\/08964280209596396","volume":"28","author":"FC Brown","year":"2002","unstructured":"Brown FC, Buboltz WC Jr, Soper B. Relationship of sleep hygiene awareness, sleep hygiene practices, and sleep quality in university students. Behav Med. 2002;28(1):33\u20138. https:\/\/doi.org\/10.1080\/08964280209596396.","journal-title":"Behav Med"},{"issue":"6 Suppl","key":"1575_CR8","doi-asserted-by":"publisher","first-page":"175","DOI":"10.1016\/s1054-139x(02)00506-2","volume":"31","author":"RE Dahl","year":"2002","unstructured":"Dahl RE, Lewin DS. Pathways to adolescent health sleep regulation and behavior. J Adolesc Health. 2002;31(6 Suppl):175\u201384. https:\/\/doi.org\/10.1016\/s1054-139x(02)00506-2.","journal-title":"J Adolesc Health"},{"issue":"1","key":"1575_CR9","doi-asserted-by":"publisher","first-page":"75","DOI":"10.1016\/j.smrv.2013.03.005","volume":"18","author":"T Shochat","year":"2014","unstructured":"Shochat T, Cohen-Zion M, Tzischinsky O. Functional consequences of inadequate sleep in adolescents: a systematic review. Sleep Med Rev. 2014;18(1):75\u201387. https:\/\/doi.org\/10.1016\/j.smrv.2013.03.005.","journal-title":"Sleep Med Rev"},{"issue":"5","key":"1575_CR10","doi-asserted-by":"publisher","first-page":"348","DOI":"10.1177\/1059840511410434","volume":"27","author":"SK Malone","year":"2011","unstructured":"Malone SK. Early to bed, early to rise?: An exploration of adolescent sleep hygiene practices. J Sch Nurs. 2011;27(5):348\u201354. https:\/\/doi.org\/10.1177\/1059840511410434.","journal-title":"J Sch Nurs"},{"issue":"5","key":"1575_CR11","doi-asserted-by":"publisher","first-page":"305","DOI":"10.14400\/JDC.2017.15.5.305","volume":"15","author":"MA You","year":"2017","unstructured":"You MA, Kang NG, Lee HJ. Relationships between sleep habits, daytime sleepiness and problem behaviors among adolescents. J Digit Converg. 2017;15(5):305\u201315. https:\/\/doi.org\/10.14400\/JDC.2017.15.5.305.","journal-title":"J Digit Converg"},{"issue":"9","key":"1575_CR12","doi-asserted-by":"publisher","first-page":"311","DOI":"10.14400\/JDC.2017.15.9.311","volume":"15","author":"SH Lee","year":"2017","unstructured":"Lee SH. Relationship of sleep duration to periodontal disease in youth. J Digit Converg. 2017;15(9):311\u20139. https:\/\/doi.org\/10.14400\/JDC.2017.15.9.311.","journal-title":"J Digit Converg"},{"issue":"2","key":"1575_CR13","doi-asserted-by":"publisher","first-page":"187","DOI":"10.14476\/JOMP.2013.38.2.187","volume":"38","author":"BS Kim","year":"2013","unstructured":"Kim BS, Heo JY, Ok SM, Kim KH, Jeong SH, Ko MY, et al. Cyber leisure activities and physical activities in adolescents with temporomandibular disorder. J Oral Med Pain. 2013;38(2):187\u2013201. https:\/\/doi.org\/10.14476\/JOMP.2013.38.2.187.","journal-title":"J Oral Med Pain"},{"key":"1575_CR14","unstructured":"Ministry of Health and Welfare of Korea, Centers for Disease Control and Prevention, Ministry of Education. The 13th Korea Youth Risk Behavior Web-based Survey Statistics. Sejong, Korea: MHWK; 2017."},{"issue":"9","key":"1575_CR15","doi-asserted-by":"publisher","first-page":"1729","DOI":"10.2105\/AJPH.2011.300478","volume":"102","author":"H Seirawan","year":"2012","unstructured":"Seirawan H, Faust S, Mulligan R. The impact of oral health on the academic performance of disadvantaged children. Am J Public Health. 2012;102(9):1729\u201334. https:\/\/doi.org\/10.2105\/AJPH.2011.300478.","journal-title":"Am J Public Health"},{"key":"1575_CR16","doi-asserted-by":"publisher","first-page":"15","DOI":"10.1186\/1472-6831-15-15","volume":"15","author":"S Tuchtenhagen","year":"2015","unstructured":"Tuchtenhagen S, Bresolin CR, Tomazoni F, da Rosa GN, Del Fabro JP, Mendes FM, et al. The influence of normative and subjective oral health status on schoolchildren\u2019s happiness. BMC Oral Health. 2015;15:15. https:\/\/doi.org\/10.1186\/1472-6831-15-15.","journal-title":"BMC Oral Health"},{"issue":"2","key":"1575_CR17","doi-asserted-by":"publisher","first-page":"110","DOI":"10.1016\/j.sleep.2010.11.008","volume":"12","author":"M Gradisar","year":"2011","unstructured":"Gradisar M, Gardner G, Dohnt H. Recent worldwide sleep patterns and problems during adolescence: a review and meta-analysis of age, region, and sleep. Sleep Med. 2011;12(2):110\u20138. https:\/\/doi.org\/10.1016\/j.sleep.2010.11.008.","journal-title":"Sleep Med"},{"key":"1575_CR18","doi-asserted-by":"publisher","DOI":"10.1111\/ped.14554","author":"C Habukawa","year":"2020","unstructured":"Habukawa C, Nagamitsu S, Koyanagi K, Nishikii Y, Yanagimoto Y, Seiji Y, et al. Late bedtime reflects QTA30 anxiety symptoms in adolescents in a school checkup. Pediatr Int. 2020. https:\/\/doi.org\/10.1111\/ped.14554.","journal-title":"Pediatr Int"},{"issue":"3","key":"1575_CR19","doi-asserted-by":"publisher","first-page":"181","DOI":"10.1111\/cdoe.12523","volume":"48","author":"H Alqaderi","year":"2020","unstructured":"Alqaderi H, Tavares M, Al-Mulla F, Al-Ozairi E, Coodson JM. Late bedtime and dental caries incidence in Kuwaiti children: a longitudinal multilevel analysis. Community Dent Oral Epidemiol. 2020;48(3):181\u20137. https:\/\/doi.org\/10.1111\/cdoe.12523.","journal-title":"Community Dent Oral Epidemiol"},{"key":"1575_CR20","volume-title":"Raw data guidelines of the 13th Korea Youth Risk Behavior Web-based Survey 2017","author":"Korea Centers for Disease Control and Prevention","year":"2017","unstructured":"Korea Centers for Disease Control and Prevention. Raw data guidelines of the 13th Korea Youth Risk Behavior Web-based Survey 2017. Osong: KCDC; 2017."},{"key":"1575_CR21","unstructured":"Korea Centers for Disease Control and Prevention. Raw data of the 13th Korea Youth Risk Behavior Web-based Survey 2017. http:\/\/www.kdca.go.kr\/yhs\/. Accessed 20 February 2021."},{"issue":"11","key":"1575_CR22","doi-asserted-by":"publisher","first-page":"1105","DOI":"10.1016\/j.sleep.2013.06.009","volume":"14","author":"I Merikanto","year":"2013","unstructured":"Merikanto I. Late bedtimes weaken school performance and predispose adolescents to health hazards. Sleep Med. 2013;14(11):1105\u201311. https:\/\/doi.org\/10.1016\/j.sleep.2013.06.009.","journal-title":"Sleep Med"},{"issue":"6","key":"1575_CR23","first-page":"3337","volume":"17","author":"YS Kim","year":"2015","unstructured":"Kim YS, Kim SH, An HG. Predictive study on factors affecting sleep hours in Korean adolescents: based on 2012 adolescent health behavior survey statistics online. JKDAS. 2015;17(6):3337\u201355.","journal-title":"JKDAS"},{"key":"1575_CR24","doi-asserted-by":"publisher","first-page":"214","DOI":"10.1111\/ped.14075","volume":"62","author":"Y Asaka","year":"2020","unstructured":"Asaka Y, Sekine M, Yamada M, Tatsuse T, Sano M. Association of short sleep duration and long media use with caries in school children. Pediatr Int. 2020;62:214\u201320. https:\/\/doi.org\/10.1111\/ped.14075.","journal-title":"Pediatr Int"},{"issue":"10","key":"1575_CR25","doi-asserted-by":"publisher","first-page":"387","DOI":"10.15207\/JKCS.2020.11.10.387","volume":"11","author":"SY Park","year":"2020","unstructured":"Park SY. Convergence relationship of BMI, sleep time and experience of oral disease in adolescents. J Korea Converg Soc. 2020;11(10):387\u201392. https:\/\/doi.org\/10.15207\/JKCS.2020.11.10.387.","journal-title":"J Korea Converg Soc"},{"issue":"1","key":"1575_CR26","doi-asserted-by":"publisher","first-page":"125","DOI":"10.13065\/jksdh.2018.18.01.125","volume":"18","author":"WJ Lee","year":"2018","unstructured":"Lee WJ, Choi BY, Hwang KG. The effect of gender between the oral symptoms experience and health behavior factors. J Korean Soc Dent Hyg. 2018;18(1):125\u201338. https:\/\/doi.org\/10.13065\/jksdh.2018.18.01.125.","journal-title":"J Korean Soc Dent Hyg"},{"issue":"3","key":"1575_CR27","doi-asserted-by":"publisher","first-page":"259","DOI":"10.5392\/JKCA.2014.14.03.259","volume":"14","author":"HS Woo","year":"2014","unstructured":"Woo HS, Shim YS. Correlation between high school students\u2019 experience of visiting the dental clinic and oral symptoms. J Korean Contents Assoc. 2014;14(3):259\u201368. https:\/\/doi.org\/10.5392\/JKCA.2014.14.03.259.","journal-title":"J Korean Contents Assoc"},{"issue":"9","key":"1575_CR28","doi-asserted-by":"publisher","first-page":"e0203318","DOI":"10.1371\/journal.pone.0203318","volume":"13","author":"S Rhie","year":"2018","unstructured":"Rhie S, Chae KY. Effects of school time on sleep duration and sleepiness in adolescents. PLoS ONE. 2018;13(9):e0203318. https:\/\/doi.org\/10.1371\/journal.pone.0203318.","journal-title":"PLoS ONE"},{"issue":"5","key":"1575_CR29","doi-asserted-by":"publisher","first-page":"363","DOI":"10.1111\/josh.12388","volume":"86","author":"AG Wheaton","year":"2016","unstructured":"Wheaton AG, Chapman DP, Croft JB. School start times, sleep, behavioral, health, and academic outcomes: a review of the literature. J Sch Health. 2016;86(5):363\u201381. https:\/\/doi.org\/10.1111\/josh.12388.","journal-title":"J Sch Health"},{"issue":"7","key":"1575_CR30","doi-asserted-by":"publisher","first-page":"2574","DOI":"10.3390\/ijerph17072574","volume":"17","author":"V Alfonsi","year":"2020","unstructured":"Alfonsi V, Scarpelli S, D\u2019Atri A, Stella G, De Gennaro L. Later school start time: the impact of sleep on academic performance and health in the adolescent population. Int J Environ Res Public Health. 2020;17(7):2574. https:\/\/doi.org\/10.3390\/ijerph17072574.","journal-title":"Int J Environ Res Public Health"},{"issue":"5","key":"1575_CR31","doi-asserted-by":"publisher","first-page":"305","DOI":"10.14400\/JDC.2017.15.5.305","volume":"15","author":"MA You","year":"2017","unstructured":"You MA. Relationships between sleep habits, daytime sleepiness and problem behaviors among adolescents. J Digit Converg. 2017;15(5):305\u201315. https:\/\/doi.org\/10.14400\/JDC.2017.15.5.305.","journal-title":"J Digit Converg"},{"key":"1575_CR32","doi-asserted-by":"publisher","first-page":"48","DOI":"10.1186\/s12986-018-0285-8","volume":"15","author":"H Wang","year":"2018","unstructured":"Wang H, Hu R, Du H, Fiona B, Zhong J, Yu M. The relationship between sleep duration and obesity risk among school students: across\u2014setional study in Zhejiang, China. Nutr Metab. 2018;15:48. https:\/\/doi.org\/10.1186\/s12986-018-0285-8.","journal-title":"Nutr Metab"},{"issue":"3","key":"1575_CR33","first-page":"100","volume":"21","author":"JJ Lee","year":"2013","unstructured":"Lee JJ, Kang JH, Lee SK, Chae KY. Impact of Sleep Duration On Emotional Status In Adolescent. J Korean Child Neurol Soc. 2013;21(3):100\u201310.","journal-title":"J Korean Child Neurol Soc"},{"key":"1575_CR34","doi-asserted-by":"publisher","first-page":"147","DOI":"10.1016\/j.psyneuen.2018.11.026","volume":"103","author":"JJ Chiang","year":"2019","unstructured":"Chiang JJ, Cole SW, Bower JE, Irwin MR, Taylor SE, Arevalo J, et al. Daily interpersonal stress, sleep duration, and gene regulation during late adolescence. Psychoneuroendocrinology. 2019;103:147\u201355. https:\/\/doi.org\/10.1016\/j.psyneuen.2018.11.026.","journal-title":"Psychoneuroendocrinology"},{"issue":"4","key":"1575_CR35","doi-asserted-by":"publisher","first-page":"796","DOI":"10.3390\/ijerph15040796","volume":"15","author":"DW Choi","year":"2018","unstructured":"Choi DW, Chun SY, Lee SA, Han KT, Park EC. Association between sleep duration and perceived stress: salaried worker in circumstances of highworkload. Int J Environ Res Public Health. 2018;15(4):796. https:\/\/doi.org\/10.3390\/ijerph15040796.","journal-title":"Int J Environ Res Public Health"},{"issue":"9","key":"1575_CR36","doi-asserted-by":"publisher","first-page":"664","DOI":"10.1002\/da.22386","volume":"32","author":"L Zhai","year":"2015","unstructured":"Zhai L, Zhang H, Zhang D. Sleep duration and depression among adults: a meta-analysis of prospective studies. Depress Anxiety. 2015;32(9):664\u201370. https:\/\/doi.org\/10.1002\/da.22386.","journal-title":"Depress Anxiety"},{"issue":"10","key":"1575_CR37","doi-asserted-by":"publisher","first-page":"1251","DOI":"10.1016\/j.sleep.2014.04.010","volume":"15","author":"F Perez de Heredia","year":"2014","unstructured":"Perez de Heredia F, Garaulet M, Gomez-Martinez S, Diaz LE, Warnberg J, Androutsos O, et al. Self-reported sleep duration, white blood cell counts and cytokine profiles in European adolescents: the HELENA study. Sleep Med. 2014;15(10):1251\u20138. https:\/\/doi.org\/10.1016\/j.sleep.2014.04.010.","journal-title":"Sleep Med"},{"issue":"2","key":"1575_CR38","doi-asserted-by":"publisher","first-page":"287","DOI":"10.1902\/jop.2010.100319","volume":"82","author":"B Rai","year":"2011","unstructured":"Rai B, Kaur J, Anand SC, Jacobs R. Salivary stress markers, stress, and periodontitis: a pilot study. J Periodontol. 2011;82(2):287\u201392. https:\/\/doi.org\/10.1902\/jop.2010.100319.","journal-title":"J Periodontol"},{"issue":"1","key":"1575_CR39","doi-asserted-by":"publisher","first-page":"6","DOI":"10.4103\/0970-9290.79966","volume":"22","author":"S Goyal","year":"2011","unstructured":"Goyal S, Jajoo S, Nagappa G, Rao G. Estimation of relationship between psychosocial stress and periodontal status using serum cortisol level: a clinico-biochemical study. Indian J Dent Res. 2011;22(1):6\u20139. https:\/\/doi.org\/10.4103\/0970-9290.79966.","journal-title":"Indian J Dent Res"},{"issue":"2","key":"1575_CR40","doi-asserted-by":"publisher","first-page":"96","DOI":"10.5051\/jpis.2013.43.2.96","volume":"43","author":"Z Refulio","year":"2013","unstructured":"Refulio Z, Rocafuerte M, de la Rosa M, Mendoza G, Chambrone L. Association among stress, salivary cortisol levels, and chronic periodontitis. J Periodontal Implant Sci. 2013;43(2):96\u2013100. https:\/\/doi.org\/10.5051\/jpis.2013.43.2.96.","journal-title":"J Periodontal Implant Sci"},{"issue":"9","key":"1575_CR41","doi-asserted-by":"publisher","first-page":"1506","DOI":"10.1016\/j.psyneuen.2012.02.004","volume":"37","author":"N Michels","year":"2012","unstructured":"Michels N, Sioen I, Huybrechts I, Bammann K, Vanaelst B, De Vriendt T, Iacoviello L, Konstabel K, Ahrens W, De Henauw S. Negative life events, emotions and psychological difficulties as determinants of salivary cortisol in Belgian primary school children. Psychoneuroendocrinology. 2012;37(9):1506\u201315. https:\/\/doi.org\/10.1016\/j.psyneuen.2012.02.004.","journal-title":"Psychoneuroendocrinology"},{"issue":"3","key":"1575_CR42","doi-asserted-by":"publisher","first-page":"CD007868","DOI":"10.1002\/14651858.CD007868.pub3","volume":"3","author":"T Walsh","year":"2019","unstructured":"Walsh T, Worthington HV, Glenny AM, Marinho VC, Jeroncic A. Fluoride toothpastes of different concentrations for preventing dental caries. Cochrane Database Syst Rev. 2019;3(3):CD007868. https:\/\/doi.org\/10.1002\/14651858.CD007868.pub3.","journal-title":"Cochrane Database Syst Rev"},{"key":"1575_CR43","unstructured":"Cho EB. The use of fluoride for the prevention of dental decay in Korea and Its Recommendation. Korea Health Promotion Institute. 2017. Weekly issue 29. https:\/\/www.khealth.or.kr\/kps. Accessed 20 Feb 2021."},{"key":"1575_CR44","unstructured":"Statistics Korea. How to use fluoride. https:\/\/kosis.kr\/statHtml\/statHtml.do?orgId=213&tblId=DT_21301_023_01&conn_path=I2. Accessed 20 Feb 2021."},{"issue":"3","key":"1575_CR45","doi-asserted-by":"publisher","first-page":"119","DOI":"10.14257\/AJMAHS.2015.06.20","volume":"5","author":"JH Lee","year":"2015","unstructured":"Lee JH, Kim BS. Relationship between the objective oral health status and the subjective oral health awareness of Korean adult. Asia Pac J Multimed Serv Converg Art Humanit Sociol. 2015;5(3):119\u201330. https:\/\/doi.org\/10.14257\/AJMAHS.2015.06.20.","journal-title":"Asia Pac J Multimed Serv Converg Art Humanit Sociol"},{"issue":"3","key":"1575_CR46","first-page":"208","volume":"9","author":"LA Aday","year":"1974","unstructured":"Aday LA, Andersen R. A framework for the study of access to medical care. Health Serv Res. 1974;9(3):208\u201320.","journal-title":"Health Serv Res"}],"container-title":["BMC Oral Health"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1186\/s12903-021-01575-3.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/article\/10.1186\/s12903-021-01575-3\/fulltext.html","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1186\/s12903-021-01575-3.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2021,5,4]],"date-time":"2021-05-04T02:03:19Z","timestamp":1620093799000},"score":1,"resource":{"primary":{"URL":"https:\/\/bmcoralhealth.biomedcentral.com\/articles\/10.1186\/s12903-021-01575-3"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,5,4]]},"references-count":46,"journal-issue":{"issue":"1","published-print":{"date-parts":[[2021,12]]}},"alternative-id":["1575"],"URL":"https:\/\/doi.org\/10.1186\/s12903-021-01575-3","relation":{},"ISSN":["1472-6831"],"issn-type":[{"value":"1472-6831","type":"electronic"}],"subject":[],"published":{"date-parts":[[2021,5,4]]},"assertion":[{"value":"10 November 2020","order":1,"name":"received","label":"Received","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"19 April 2021","order":2,"name":"accepted","label":"Accepted","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"4 May 2021","order":3,"name":"first_online","label":"First Online","group":{"name":"ArticleHistory","label":"Article History"}},{"order":1,"name":"Ethics","group":{"name":"EthicsHeading","label":"Declarations"}},{"order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethics approval and consent to participate"}},{"order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Consent for publication"}},{"value":"The authors declare that they have no competing interests.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Competing interests"}}],"article-number":"233"}}