Low Birth Weight, Shorter Breastfeeding, and Pacifier Use Linked to Childhood Bruxism: Study
A new prospective cohort study has found that children born with low birth weight face an elevated risk of developing bruxism, a condition marked by teeth grinding or clenching during childhood.
The findings indicate that while low birth weight itself heightens susceptibility, the relationship is not explained by exclusive breastfeeding, pacifier use, or mental health issues. Instead, shorter durations of breastfeeding and regular pacifier use were shown to independently increase the risk of bruxism, underscoring the importance of both prenatal and early postnatal care in safeguarding oral and developmental health.
Researchers highlighted that early-life oral behaviors can play a pivotal role in shaping dental and functional outcomes. Exclusive breastfeeding for at least six months was associated with a lower incidence of bruxism, supporting its protective benefits beyond nutrition and immunity.
On the other hand, pacifier use emerged as a strong contributor, possibly due to the repetitive non-nutritive sucking habit that interferes with normal oral development and jaw function. The absence of a strong association with mental health difficulties suggests that childhood bruxism is more closely tied to biological and environmental conditions from infancy rather than emotional or behavioral distress.
The study emphasizes preventive strategies that begin before birth and continue through early childhood. Ensuring proper prenatal care can help reduce the prevalence of low birth weight, a significant starting point in lowering bruxism risk. Health professionals and caregivers are encouraged to promote exclusive breastfeeding for at least six months and discourage pacifier use to support healthy oral growth.
These measures may help reduce the burden of childhood bruxism, which can otherwise lead to dental wear, temporomandibular discomfort, and other complications later in life. Overall, the findings highlight the interconnected influence of perinatal health, infant feeding practices, and early oral habits on long-term well-being, providing valuable insights for pediatric and public health strategies.
Reference
E. B. A. F. Thomaz, E. M. Costa, É. M. Valois, et al., “Low Birth Weight and Bruxism Among Brazilian Children: A Prospective Cohort Study,” Journal of Oral Rehabilitation (2025): 1–9. https://doi.org/10.1111/joor.70043
