Oral Health and Academic Achievement of Children in Low-Income Families

Area of Science:

• Pediatric Oral Health
• Educational Psychology
• Public Health

Background:

• Low-income children face significant unmet oral health needs.
• Previous studies indicate a link between poor oral health and lower academic achievement, but often rely on cross-sectional and parent-reported data.
• The long-term impact of early childhood oral health on academic outcomes remains under-examined.

Purpose of the Study:

• To investigate the association between oral health status in the first five years of life and subsequent academic achievement in low-income children.
• To utilize objective data sources, including dental claims and standardized test scores, to overcome limitations of prior research.

Main Methods:

• Longitudinal data linkage of birth certificates, Medicaid enrollment, and dental claims for children born in Iowa (1999-2009).
• Inclusion of standardized reading and math test scores from 2nd to 11th grade.
• Regression analyses adjusted for sociodemographic factors, infant health, and school district variations.

Main Results:

• Children receiving minor dental treatments (e.g., fillings) showed improved reading and math scores (1.0 and 0.9 percentile points, respectively).
• Conversely, children undergoing major dental treatments or extractions experienced a decline in reading and math scores (2.4 and 1.8 percentile points, respectively).
• Comprehensive dental exams in early childhood were associated with modest gains in reading and math scores (0.7 and 1.2 percentile points, respectively).

Conclusions:

• Early childhood oral health is a significant predictor of academic achievement in later school years for low-income children.
• Preventive and timely dental care may positively influence educational trajectories.
• Addressing oral health disparities in early childhood is crucial for supporting academic success.