Figure 1. Jaw-closing force meter: (A) The arrowhead indicates a flexible pressure sensor; (B) protective film is attached. The arrowheads indicate porous material attached outside of the protective film; and (C) the arrowhead indicates the closing force on the display.

Table 1. Intra- and inter-rater reliability of the force-closure instrument (n = 13).

Table 1. Intra- and inter-rater reliability of the force-closure instrument (n = 13).

Intraclass Correlation Coefficient95% Confidence Intervalp-ValueIntra-rater reliabilityRight0.811[0.406, 0.942]0.003Left0.691[0.027, 0.905]0.023Inter-rater reliabilityRight0.706[0.105, 0.905]0.007Left0.789[0.309, 0.932]0.006

Table 2. Characteristics of participants (n = 62).

Table 2. Characteristics of participants (n = 62).

Characteristics Age (years), median (IQR)73.5 (70.3, 80.0)Sex, N (%)Male38 (61.3)Female24 (38.7)Eichner classification, N (%)A59 (95.2)B2 (3.2)C1 (1.6)BMI (kg/m2), mean ± SD 22.5 ± 2.7OF: R (N), median (IQR) 352.6 (209.6, 458.5)OF: L (N), median (IQR) 300.1 (196.5, 451.1)JCF: R (N), median (IQR) 326.7 (210.0, 466.7)JCF: L (N), median (IQR) 280.0 (158.3, 422.5)

Table 3. Correlation coefficients for each item (n = 62).

Table 3. Correlation coefficients for each item (n = 62).

AgeBMIOF (R)OF (L)JCF (R)JCF (L)Age1 BMI0.1191 OF (R)−0.312 *−0.0421 OF (L)−0.165−0.0450.684 **1 JCF (R)−0.413 **−0.1030.433 **0.299 *1 JCF (L)−0.190−0.1130.303 *0.298 *0.712 **1

Table 4. Multiple regression analysis with jaw-closing force as dependent variables (n = 62).

Table 4. Multiple regression analysis with jaw-closing force as dependent variables (n = 62).

Standardizing Coefficient (β)p-ValueVIFAge−0.240.038*1.23Sex−0.190.0701.05BMI−0.100.3441.02OF0.220.043 *1.11Presence of denture−0.43<0.001 **1.25