Changes in the caries-associated microbiota and caries experience in children and adolescents with type 1 diabetes: a systematic review and meta-analysis
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Date
2025
Authors
Ta, A.
Nath, S.
Poirier, B.
Sethi, S.
Smart, G.
Jensen, E.
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Archives of Oral Biology, 2025; 172:106179-1-106179-19
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Andrew Ta, Sonia Nath, Brianna Poirier, Sneha Sethi, Gabrielle Smart, Emilija Jensen
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Abstract
Objective: This systematic review aimed to determine the differences in the caries-associated microbiota and caries experience among children with type 1 diabetes (T1D) compared to healthy children in observational studies. Design: Registered in PROPSERO (CRD42024529842), this review involved searching four electronic databases (PubMed, Embase, Scopus and Web of Science) from inception to April 2024. Citation searching was further performed on eligible studies from the database search. Observational studies comparing the cariogenic taxa between paediatric participants (0–18 years of age) with T1D and healthy paediatric participants were included. Caries experience was analysed where available in eligible studies. Outcomes were narratively and tabularly synthesised, and meta-analysis performed where appropriate. All studies were critically appraised using the relevant Joanna Briggs Institute appraisal tool. Results: 425 studies were identified, of which 14 studies were eligible. After assessing 534 citations, 2 additional studies were included. Overall, 16 studies (15 cross-sectional, 1 longitudinal) satisfied the inclusion criteria. Differences in cariogenic bacteria were observed when glycaemic control was considered. Children with T1D and poorer glycaemic control exhibited an increase in Streptococci and Lactobacilli taxa compared to those with improved glycaemic control and healthy children. A small number of studies also found increases in the caries experience with poorer glycaemic control. Conclusion: Overall, the evidence indicates that children with T1D who have poorer glycaemic control exhibit an increase in cariogenic bacteria. Early evidence suggests that these children also experience more caries. However, further research with improved and longitudinal study designs are required to strengthen the existing evidence.
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© 2025 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).