Journal of oral rehabilitation · 2025
Modified Relative Handgrip Strength and Tooth Loss: A Nationwide Study.
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Kim Yoon-Jin, Kim Ji-Eun, Choi Choong-Ho, Chung Ki-Ho
Аннотация
BACKGROUND: Handgrip strength (HGS) reflects overall muscular fitness and health. Although associations between absolute or BMI-adjusted HGS and systemic conditions have been studied, no research has examined its link to tooth loss using modified relative HGS indices from other anthropometric factors.
OBJECTIVES: This study aimed to investigate, for the first time, the association between tooth loss and various modified relative HGS indices using nationally representative data.
METHODS: Using the 2014-2023 Korean National Health and Nutrition Examination Survey data (n = 52 206), relative HGS was calculated by adjusting dominant HGS with various body indices. Oral status was classified as functional (≥ 20 teeth) or reduced (< 20 teeth). Statistical analysis to assess associations and diagnostic accuracy was performed using the chi-square test, t-test, incidence rate ratio (IRR), and the receiver operating characteristic (ROC).
RESULTS: In the fully adjusted IRR analysis, waist circumference (WC)-based relative HGS showed the strongest inverse association with tooth loss (IRR = 0.505, 95% confidence interval [CI] = 0.388-0.656). The ROC analysis revealed that relative HGS indicators adjusted for WC, waist-to-height ratio (WHtR), and weight-adjusted waist index (WWI), which represent central adiposity, had the highest diagnostic accuracy for predicting tooth loss (area under the curve [AUC] = 0.6367, 0.6323, and 0.6316, respectively). Significant differences were observed in all HGS indicators based on the functional dentition criterion (p < 0.001).
CONCLUSION: WC-adjusted relative HGS showed the strongest inverse association with tooth loss, indicating its potential utility for early identification of high-risk individuals and informing multidisciplinary approaches to oral rehabilitation.
OBJECTIVES: This study aimed to investigate, for the first time, the association between tooth loss and various modified relative HGS indices using nationally representative data.
METHODS: Using the 2014-2023 Korean National Health and Nutrition Examination Survey data (n = 52 206), relative HGS was calculated by adjusting dominant HGS with various body indices. Oral status was classified as functional (≥ 20 teeth) or reduced (< 20 teeth). Statistical analysis to assess associations and diagnostic accuracy was performed using the chi-square test, t-test, incidence rate ratio (IRR), and the receiver operating characteristic (ROC).
RESULTS: In the fully adjusted IRR analysis, waist circumference (WC)-based relative HGS showed the strongest inverse association with tooth loss (IRR = 0.505, 95% confidence interval [CI] = 0.388-0.656). The ROC analysis revealed that relative HGS indicators adjusted for WC, waist-to-height ratio (WHtR), and weight-adjusted waist index (WWI), which represent central adiposity, had the highest diagnostic accuracy for predicting tooth loss (area under the curve [AUC] = 0.6367, 0.6323, and 0.6316, respectively). Significant differences were observed in all HGS indicators based on the functional dentition criterion (p < 0.001).
CONCLUSION: WC-adjusted relative HGS showed the strongest inverse association with tooth loss, indicating its potential utility for early identification of high-risk individuals and informing multidisciplinary approaches to oral rehabilitation.