Introduction
This study aims to identify the trends in incidence and prevalence of untreated caries
in permanent teeth in China during 1993–2017.
Methods
Data representing >31 billion person-years of observation from the Global Burden of
Disease study 2017 were analyzed. Age–period–cohort modeling was performed to investigate
the trends in untreated caries that may be of value to policymakers. Analyses were
conducted in 2019–2020.
Results
Prevalence of untreated caries in permanent teeth decreased steadily before 2010;
after which, an increasing trend was noted without the signs of plateauing (age-adjusted
annual percentage change, 1993–2017: −0.54%, 95% CI= −0.75%, −0.33%; declining period
RR, 1993–2017: p=6.33 × 10−9; declining cohort RR, 1993–2017: p=3.46 × 10−6). Although untreated caries prevalence declined overall among multiple age groups
(p<0.05), an increase in prevalence after 2010 was noted. This was driven by the deteriorating
oral health condition in recent birth cohorts aged <25 years. Estimates of the longitudinal
age trend (incidence: −0.013, 95% CI= −0.015, −0.011; prevalence: −0.0038, 95% CI=
−0.0060, −0.0015) suggested that the highest untreated caries incidence and prevalence
rate were both observed among young adults aged 20–24 years. No differences between
incidence and prevalence of untreated caries were observed among adults aged >55 years
(p>0.05).
Conclusions
The increased burden of untreated caries in China after 2010 is driven by those aged
<25 years. Untreated caries data from the Global Burden of Disease study are a valid
complement to the data from the Chinese National Oral Health Epidemiology Surveys.
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Article Info
Publication History
Published online: November 02, 2020
Identification
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© 2020 American Journal of Preventive Medicine. Published by Elsevier Inc. All rights reserved.
