Korean J Intern Med.  2018 Nov;33(6):1150-1159. 10.3904/kjim.2016.386.

Number of existing permanent teeth is associated with chronic kidney disease in the elderly Korean population

• Shin HS

• KMID: 2426400
• DOI: http://doi.org/10.3904/kjim.2016.386

Abstract

BACKGROUND/AIMS
The aim of this study was to assess the association between the number of existing permanent teeth and chronic kidney disease (CKD) in a representative sample of the elderly Korean population.
METHODS
A total of 2,519 subjects who participated in the Korean National Health and Nutrition Examination Survey were cross-sectionally examined. The number of existing permanent teeth was evaluated by clinical oral examination. CKD was defined based on definition and classification by Kidney Disease: Improving Global Outcomes (KDIGO) 2012 guidelines. Multivariable logistic regression analyses were performed controlling for age, gender, income, education, tooth-brushing frequency, periodontitis, state of dentition, smoking, alcohol consumption, hypertension, obesity, diabetes mellitus, and hypercholesterolemia. Subgroup analyses by age and gender were also performed.
RESULTS
The number of teeth was significantly associated with CKD after controlling for all potential confounders (adjusted odds ratio [AOR], 1.67; 95% confidence interval [CI], 1.04 to 2.70 for lower number of teeth; AOR, 1.59; 95% CI, 1.14 to 2.23 for moderate number of teeth). In the subgroup analyses, the association was highlighted in females aged 75 years over (AOR, 2.55; 95% CI, 1.05 to 6.20 for lower number of teeth; AOR, 1.95; 95% CI, 1.01 to 3.80 for moderate number of teeth).
CONCLUSIONS
Our findings suggest that the number of existing permanent teeth may be associated with CKD among Korean elderly.

Keyword

Renal insufficiency, chronic; Epidemiology; Number of teeth; Periodontitis; Risk factors

MeSH Terms

Aged*
Alcohol Drinking
Classification
Dentition
Diabetes Mellitus
Diagnosis, Oral
Education
Epidemiology
Female
Humans
Hypercholesterolemia
Hypertension
Kidney Diseases
Logistic Models
Nutrition Surveys
Obesity
Odds Ratio
Periodontitis
Renal Insufficiency, Chronic*
Risk Factors
Smoke
Smoking
Tooth*
Smoke