Amalgam or composite in pediatric dentistry
Background
Advancements in dental materials and changing parental preferences are modifying the frequency of use of restorative materials. This insurance claims analysis examined the trends in the use of amalgam and resin composite in the United States.
Methods
Commercial dental insurance claims were analyzed to compare 505,994 restorations, corresponding with procedure codes for 1-, 2-, and 3-surface amalgam or resin restorations. Paid claims collected nationwide from January 2010 through March 2020 were analyzed. Data for children aged three through 12 years were used, resulting in 219,632 unique patient identification numbers. Generalized estimating equation models applied to logistic regression were used. All tests were conducted using a two-sided 5% significance level.
Results
In general, girls were less likely to receive amalgam than boys. A $20,000 increase in median household income was associated with a 16% decrease in the odds of amalgam being placed.
Pediatric dentists (performing 15.1% of all restorations) were not as likely as general dentists (18.4%) to use amalgam.
Having more surfaces in a restoration was associated with higher probability of amalgam placement.
The percentage of amalgam restorations was higher for 2010 (26.9%) than for 2011 through 2020, and this pattern recurred in several of the years analyzed. Generally, patient age at time of amalgam restoration increased over time.
Conclusion
The use of amalgam is trending down; the sharpest decline was noted in 2014. Pediatric dentists were less likely to use amalgam than general dentists. Girls and patients with higher socioeconomic status were less likely to have amalgam.
Practical implications
The findings of this study can inform and support clinical decisions and the formation of public policies.
Francis Dentino et al. "Amalgam or composite in pediatric dentistry: Analysis of private insurance claims data." JADA. August 2023. DOI: https://doi.org/10.1016/j.adaj.2023.04.015
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