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the claim

Thumb sucking is unhealthy for children

the verdict
SUPPORTED
the evidence backs this
Recorded sources
5 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that Thumb sucking is unhealthy for children?

Yes. Evidence from clinical studies consistently demonstrates that prolonged nonnutritive sucking habits, such as thumb and finger sucking, are associated with negative dental outcomes including malocclusion and anterior open bite.

Verdict: SUPPORTED · 5 sources for, 0 against · Last checked

The analysis

The retrieved literature consistently supports the claim that nonnutritive sucking habits like thumb sucking contribute to adverse dental developmental outcomes, specifically malocclusions. Multiple studies (indices 1, 3, 5, 8, 10) link these habits to structural dental changes. No papers refute this relationship, leading to a SUPPORTED verdict.

Evidence for · 5
Association between malocclusion in the mixed dentition with breastfeeding and past nonnutritive sucking habits in school-age children
2022
The study indicates that past nonnutritive sucking habits are associated with the occurrence of malocclusion in school-age children.
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Belitz, G. S., Furlan, L. J. N., Knorst, J. K., Berwig, L. C., Ardenghi, T. M., Ferrazzo, V. A., & Marquezan, M. (2022). Association between malocclusion in the mixed dentition with breastfeeding and past nonnutritive sucking habits in school-age children. doi.org. https://doi.org/10.2319/111821-848.1

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More for · 4
Orofacial dysfunction, nonnutritive sucking habits, and dental caries influence malocclusion in children aged 8-10 years.
2022
Results show that nonnutritive sucking habits are significantly associated with the presence of malocclusion in children.
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Granja, G. L., Bernardino, V. M. M., Lima, L. C. M., Araújo, L. J. S. d., Arruda, M. J. A. L. L. A., Ferreira, F., Paiva, S., & Granville-Garcia, A. (2022). Orofacial dysfunction, nonnutritive sucking habits, and dental caries influence malocclusion in children aged 8-10 years.. doi.org. https://doi.org/10.1016/j.ajodo.2021.05.012

Influence of Oral Habits on Pediatric Malocclusion: Etiology and Preventive Approaches.
2024
Research establishes a strong association between thumb sucking and various malocclusion patterns such as anterior open bite and crowding.
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HS, K., AA, A., AF, A., AH, A., SF, A., MM, A., TS, O., RA, B., JA, A., AM, T., & KA, A. (2024). Influence of Oral Habits on Pediatric Malocclusion: Etiology and Preventive Approaches.. doi.org. https://doi.org/10.7759/cureus.72995

Pacifier Use and Its Influence on Pediatric Malocclusion: A Scoping Review of Emerging Evidence and Developmental Impacts.
2025
Extended non-nutritive sucking practices like pacifier use are consistently linked to adverse dental outcomes and malocclusion.
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M, H., J, M., C, W., & C, S. (2025). Pacifier Use and Its Influence on Pediatric Malocclusion: A Scoping Review of Emerging Evidence and Developmental Impacts.. doi.org. https://doi.org/10.3390/dj13070319

Parental knowledge, awareness, and attitudes towards children's oral habits: a descriptive cross-sectional study.
2025
Parents widely recognize that persistent sucking habits cause dental malocclusion and facial growth problems.
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S, A., A, A., N, A., A, A., H, A., E, E., & A, A. (2025). Parental knowledge, awareness, and attitudes towards children's oral habits: a descriptive cross-sectional study.. doi.org. https://doi.org/10.2340/aos.v84.42643

What does the evidence say?

The retrieved literature consistently supports the claim that nonnutritive sucking habits like thumb sucking contribute to adverse dental developmental outcomes, specifically malocclusions. Multiple studies (indices 1, 3, 5, 8, 10) link these habits to structural dental changes. No papers refute this relationship, leading to a SUPPORTED verdict.

Receipt History
first checked04 Aug 2026
judged → SUPPORTED · 8204 Aug 2026
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