Previously submitted to: JMIR Public Health and Surveillance (no longer under consideration since Jun 15, 2021)
Date Submitted: Nov 10, 2020
Warning: This is an author submission that is not peer-reviewed or edited. Preprints - unless they show as "accepted" - should not be relied on to guide clinical practice or health-related behavior and should not be reported in news media as established information.
Association between scaling and tooth loss in Korean adults: a claim-based matched cohort study
ABSTRACT
Background:
Tooth loss has a significant effect on the quality of life. Scaling is a measure to prevent periodontal disease and tooth loss.
Objective:
The purpose of this study was to identify the effect of scaling on tooth loss.
Methods:
The NHIS released a medical check-up cohort database, consisting of 514,866 Koreans as an initial cohort, and followed the subjects for 14 years up to 2015. The cohort data represent a random sample of about 10% of a medical examiner in 2002-2003 (5.15 millions). The study population comprised people who had received an oral check-up in 2002-2003. Tooth loss was defined as including all teeth except for third molars until 2015. Using propensity score matching, we matched case and control 1:1 according to scaling. The final sample included 94,738. Statistical analysis was done using a Cox proportional hazard model.
Results:
Scaling shows conflicting results in univariate and multivariable analyses. In the univariate analysis, the group who received scaling was more likely to lose teeth (HR, 1.04; 95% CI, 1.02-1.05). After adjusting confounders, however, we found that those who didn’t received scaling were more likely to lose teeth in the multivariable analysis (HR, 0.97; 95% CI, 0.95-0.99). The effects of scaling were identified in non-diabetic subjects (HR, 0.97; 95% CI, 0.95-0.99). The scaling didn't work in the diabetic patients (HR, 0.97; 95% CI, 0.89-1.06). The scaling was associated with reducing tooth loss.
Conclusions:
Regular scaling should be encouraged for vulnerable groups, such as males, older adults, lower income, handicapped, chronic diseases, and smokers. This evidence-based result could help dental-policy adoption and development. Clinical Trial: N/A
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