IADR Abstract Archives
Patterns of Posterior Dental Restorations in Privately Insured Americans
Objectives: Estimates of current dental amalgam placement are needed to guide policy in the context of evolving materials/techniques as well as national phase down commitment.
Methods: Amalgam and composite posterior restoration numbers between 2017-2019 were calculated using dental claims data for privately insured patients. Kruskal-Wallis and multivariable negative binomial regression models tested differences in rates of amalgam and composite placement by age group, gender, urban/rural, and percent race/ethnicity in the area. Statistical significance was set at 0.05, with Benjamini-Hochberg correction for false discovery rate.
Results: Rate of amalgam restorations declined over time from a mean of 6.29 per 100 patients in 2017 to 4.78 per 100 patients in 2019, while composite rate increased from 2.76 per 100 patients in 2017 to 2.88 per 100 in 2019. Mean number of amalgams placed per person were lower in females compared to males, urban compared to rural areas, and areas with >75% non-Hispanic White residents. The odds of having higher counts of amalgam restorations were lower 2018-2019 compared to 2017, females compared to males, rural compared to urban areas, and higher for any group that was not >75% non-Hispanic White (Table). The majority (51.8%) of dental patients aged <11 years received no amalgam posterior restorations during the study period; however, <11 year old patients had higher odds of higher counts of amalgam posterior restorations than patients aged 35-55 years.
Conclusions: While the data did not allow computing total number of caries restorations, amalgam placements in privately insured Americans declined between 2017-2019. Amalgam phase down may currently be unevenly distributed. Achieving further phase down of dental amalgam may require changes to insurance coverage, incentives, provider training, as along with augmented disease prevention and health promotion efforts. Phase down efforts should particularly focus on groups with higher caries risk or higher rates of amalgam placement.
Methods: Amalgam and composite posterior restoration numbers between 2017-2019 were calculated using dental claims data for privately insured patients. Kruskal-Wallis and multivariable negative binomial regression models tested differences in rates of amalgam and composite placement by age group, gender, urban/rural, and percent race/ethnicity in the area. Statistical significance was set at 0.05, with Benjamini-Hochberg correction for false discovery rate.
Results: Rate of amalgam restorations declined over time from a mean of 6.29 per 100 patients in 2017 to 4.78 per 100 patients in 2019, while composite rate increased from 2.76 per 100 patients in 2017 to 2.88 per 100 in 2019. Mean number of amalgams placed per person were lower in females compared to males, urban compared to rural areas, and areas with >75% non-Hispanic White residents. The odds of having higher counts of amalgam restorations were lower 2018-2019 compared to 2017, females compared to males, rural compared to urban areas, and higher for any group that was not >75% non-Hispanic White (Table). The majority (51.8%) of dental patients aged <11 years received no amalgam posterior restorations during the study period; however, <11 year old patients had higher odds of higher counts of amalgam posterior restorations than patients aged 35-55 years.
Conclusions: While the data did not allow computing total number of caries restorations, amalgam placements in privately insured Americans declined between 2017-2019. Amalgam phase down may currently be unevenly distributed. Achieving further phase down of dental amalgam may require changes to insurance coverage, incentives, provider training, as along with augmented disease prevention and health promotion efforts. Phase down efforts should particularly focus on groups with higher caries risk or higher rates of amalgam placement.