# Occurrence rate and estimated economic burden of pulp and periapical disease treatment among Korean older adults: a national population-based retrospective study

## TL;DR

This study examines how often older Koreans receive treatment for pulp and periapical diseases and the associated economic costs over time.

## Contribution

The study provides new population-based data on the occurrence and economic burden of pulp and periapical disease treatment in older Korean adults.

## Key findings

- The occurrence rate of pulp and periapical disease treatment decreased from 1.24% to 0.91% between 2014 and 2018.
- Total economic burden of treatment dropped from US$14.68 million to US$11.36 million during the study period.
- The economic burden as a percentage of Korea’s GDP and dental care benefits also significantly declined.

## Abstract

Maintaining healthy dentition is essential for the overall health of older adults. Treatment of pulp and periapical disease (PPD) is crucial for preserving teeth. This study assessed the occurrence rate and economic burden of PPD treatment in an older Korean population.

Data were obtained for adults aged ≥65 years from the Korean National Health Insurance Services from 2014 to 2018. The occurrence rate was defined as the proportion of individuals who received ≥1 PPD treatment. The economic burden was estimated using both direct and indirect expenditures, calculated from a societal perspective. Regression analysis was performed to evaluate yearly trends in occurrence rate and economic burden.

Direct costs, which included insured and non-insured medical expenses, ranged from US$13.79 million to US$10.47 million. Indirect costs, comprising transportation and time costs, ranged from US$0.89 million to US$0.80 million. Total costs declined from US$14.68 million to US$11.36 million. The occurrence rate of PPD treatment decreased significantly from 1.24% to 0.91% (p<0.05). The economic burden also demonstrated a statistically significant downward trend, with total PPD costs decreasing from 0.00099% to 0.00066% of Korea’s GDP, and from 0.63% to 0.30% of the annual total dental care benefit costs between 2014 and 2018 (p<0.05).

The occurrence rate and estimated economic burden of PPD treatment significantly decreased among older Korean adults from 2014 to 2018. Conservative approaches to tooth preservation contribute to more effective oral health policies and help reduce the economic burden of oral disease treatments in an aging society.