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dc.contributor.authorFernando, Surani
dc.contributor.authorTadakamadla, Santosh
dc.contributor.authorKroon, Jeroen
dc.contributor.authorLalloo, Ratilal
dc.contributor.authorJohnson, Newell W
dc.date.accessioned2021-09-08T05:27:23Z
dc.date.available2021-09-08T05:27:23Z
dc.date.issued2021
dc.identifier.issn1472-6831
dc.identifier.doi10.1186/s12903-021-01702-0
dc.identifier.urihttp://hdl.handle.net/10072/407768
dc.description.abstractBackground: The burden of childhood dental caries amongst Indigenous Australians is higher than in other Australians. Because of differences in lifestyle and the evolutionary history of the oral microbiota, associated risk indicators may differ. Here, we evaluate associations between caries increment, salivary biomarkers and baseline caries among children aged 5–17 years residing in a remote rural Indigenous community. Methods: This study was part of a trial assessing cost-effectiveness of an intervention to prevent dental caries among children. Baseline epidemiology and application of topical caries-preventive measures was conducted in 2015, followed-up in 2016 and 2017. Children who did not consent or failed to attend the prevention visits but did attend for follow-up epidemiology constituted a natural comparison group for evaluating the intervention. Saliva flow, pH, buffering and bacterial loads were measured at all visits. Caries was scored by the International Caries Detection and Assessment system. Outcome was caries increment. Explanatory variables were sex, being in experimental or comparison group, baseline caries, saliva flowrate and buffering, pH, and salivary loads of mutans streptococci (MS), Lactobacilli (LB), and yeast. Chi Square tests compared caries incidence in relation to explanatory variables and Generalised Linear Models explored associations between explanatory and outcome variables. Results: Of 408 participants at baseline, only 208 presented at 2-year follow-up. Of caries-free children at baseline, significantly fewer had incipient (p = 0.01) and advanced (p = 0.04) caries after two years. Children in the experimental group experienced fewer tooth surfaces with advanced caries (p = 0.02) than comparison children. Having caries at baseline (p = 0.02) and low salivary flow-rates (p < 0.001) saw a significant increase in advanced caries after two years. Children with high salivary loads of MS (p = 0.03) and LB (p = 0.004) experienced more advanced carious surfaces. Multivariable analysis revealed 58% reduction (p = 0.001) in advanced caries among children with high salivary flow rates. Caries increment was 61% (p = 0.03) more for incipient and 121% (p = 0.007) more for advanced caries among children who harboured higher loads of MS. Conclusion: As with other ethnicities, children with low salivary flow and those with high MS had higher incipient and advanced caries increments after two years. Such risk assessments facilitate targeted preventive interventions for such communities. Trial registration: Australian New Zealand Clinical Trials Registry (ANZCTR), No: ACTRN12615000693527: 3 July 2015.
dc.description.peerreviewedYes
dc.languageEnglish
dc.publisherBMC
dc.relation.ispartofpagefrom372
dc.relation.ispartofissue1
dc.relation.ispartofjournalBMC Oral Health
dc.relation.ispartofvolume21
dc.relation.urihttp://purl.org/au-research/grants/NHMRC/APP1081320
dc.relation.grantIDAPP1081320
dc.relation.fundersNHMRC
dc.subject.fieldofresearchDentistry
dc.subject.fieldofresearchcode3203
dc.subject.keywordsScience & Technology
dc.subject.keywordsLife Sciences & Biomedicine
dc.subject.keywordsDentistry, Oral Surgery & Medicine
dc.subject.keywordsIndigenous children
dc.subject.keywordsDental Caries
dc.titlePredicting dental caries increment using salivary biomarkers in a remote Indigenous Australian child population
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationFernando, S; Tadakamadla, S; Kroon, J; Lalloo, R; Johnson, NW, Predicting dental caries increment using salivary biomarkers in a remote Indigenous Australian child population, BMC Oral Health, 2021, 21 (1), pp. 372
dcterms.dateAccepted2021-06-20
dcterms.licensehttps://creativecommons.org/licenses/by/4.0/
dc.date.updated2021-09-08T05:23:12Z
dc.description.versionVersion of Record (VoR)
gro.rights.copyright© The Author(s) 2021. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made.
gro.hasfulltextFull Text
gro.griffith.authorKroon, Jeroen
gro.griffith.authorJohnson, Newell W.


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