{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,8,19]],"date-time":"2025-08-19T10:24:07Z","timestamp":1755599047938,"version":"3.40.5"},"reference-count":25,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2019,7,4]],"date-time":"2019-07-04T00:00:00Z","timestamp":1562198400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/501100000925","name":"National Health and Medical Research Council","doi-asserted-by":"publisher","award":["1011589","910557"],"award-info":[{"award-number":["1011589","910557"]}],"id":[{"id":"10.13039\/501100000925","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Comm Dent Oral Epid"],"published-print":{"date-parts":[[2019,10]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>The \u201cfailure of success\u201d theory predicts that as subsequent generations of older adults retain more teeth, those additional teeth will experience more oral disease like root surface caries. The theory in relation to root surface caries has never been tested in a cross\u2010generational study. This study aims to compare root surface caries across generations of South Australian older adults to test the theory and explore risk indicators for root surface caries.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Data were from the baseline of two South Australian studies separated by 22\u00a0years. In both studies, stratified random samples of people aged 60+ years from Adelaide and Mount Gambier were recruited. Dental examinations were performed by trained and calibrated dentists. One of the dental examiners from the earlier study was the gold standard examiner in the second study. Risk indicators included behavioural factors, clinical oral conditions, sociodemographic and socioeconomic status. Root surface caries was assessed as untreated root surface caries (root decayed surfaces [<jats:styled-content style=\"fixed-case\">RDS<\/jats:styled-content>]), treated root surface caries (root filled surfaces [<jats:styled-content style=\"fixed-case\">RFS<\/jats:styled-content>]) and treated or untreated root surface caries (root decayed and filled surfaces [<jats:styled-content style=\"fixed-case\">RDFS<\/jats:styled-content>]) and was presented as the prevalence and summed count. Multivariable models for Poisson and negative binomial distributions were used to estimate prevalence ratios (<jats:styled-content style=\"fixed-case\">PR<\/jats:styled-content>) and mean ratios (<jats:styled-content style=\"fixed-case\">MR<\/jats:styled-content>), respectively, and their 95% confidence intervals (95% <jats:styled-content style=\"fixed-case\">CI<\/jats:styled-content>).<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The current generation of South Australian older adults has significantly lower <jats:styled-content style=\"fixed-case\">RDS<\/jats:styled-content> (<jats:styled-content style=\"fixed-case\">PR<\/jats:styled-content> [95% <jats:styled-content style=\"fixed-case\">CI<\/jats:styled-content>]\u00a0=\u00a00.65 [0.47\u20100.89]; <jats:styled-content style=\"fixed-case\">MR<\/jats:styled-content> [95% <jats:styled-content style=\"fixed-case\">CI<\/jats:styled-content>]\u00a0=\u00a00.51 [0.35\u20100.73]) and <jats:styled-content style=\"fixed-case\">RDFS<\/jats:styled-content> (<jats:styled-content style=\"fixed-case\">PR<\/jats:styled-content> [95% <jats:styled-content style=\"fixed-case\">CI<\/jats:styled-content>]\u00a0=\u00a00.84 [0.71\u20100.99]; <jats:styled-content style=\"fixed-case\">MR<\/jats:styled-content> [95% <jats:styled-content style=\"fixed-case\">CI<\/jats:styled-content>]\u00a0=\u00a00.76 [0.65\u20100.90]) than the previous generation. The <jats:styled-content style=\"fixed-case\">RFS<\/jats:styled-content> in the previous and current generation was similar. Gingival recession, irregular brushing, dental visiting for a problem and smoking were the indicators for <jats:styled-content style=\"fixed-case\">RDS<\/jats:styled-content>, while age, gingival recession, tooth brushing frequency, time since last dental visit and reason of visiting were the indicators for <jats:styled-content style=\"fixed-case\">RFS<\/jats:styled-content> or <jats:styled-content style=\"fixed-case\">RDFS<\/jats:styled-content>.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>These results do not support the \u201cfailure of success\u201d theory in relation to root surface caries among South Australian older adults. Despite the higher number of teeth retained, the current generation of older adults has less root surface caries than the previous generation. Behavioural factors remain the indicators of root surface caries across the generations.<\/jats:p><\/jats:sec>","DOI":"10.1111\/cdoe.12459","type":"journal-article","created":{"date-parts":[[2019,7,5]],"date-time":"2019-07-05T01:15:27Z","timestamp":1562289327000},"page":"398-406","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["The prevalence and severity of root surface caries across Australian generations"],"prefix":"10.1111","volume":"47","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0807-0081","authenticated-orcid":false,"given":"Ninuk","family":"Hariyani","sequence":"first","affiliation":[{"name":"Australian Research Centre for Population Oral Health Adelaide Dental School The University of Adelaide Adelaide South Australia Australia"},{"name":"Department of Dental Public Health Faculty of Dental Medicine Universitas Airlangga Surabaya Indonesia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"A. 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