Table 2.
Baseline characteristics of participants.
| Evaluated items |
CDA (n = 257) |
SDA (n = 21) |
p |
|---|---|---|---|
| Age (years) | 71.6 ± 5.4 | 71.3 ± 4.0 | 0.21 |
| Gender (Male) | 81 (31.5％) | 8 (38.1％) | 0.79 |
| Num. of Functional teetha | 28.0 ± 0.0 | 23.5 ± 0.7 | <0.001 |
| Masticatory performance (score) | 5.4 ± 0.1 | 3.8 ± 0.4 | <0.001 |
| Occlusal force (kgf)a | 83.5 ± 2.2 | 60.1 ± 5.1 | 0.003 |
| Oral cleanliness (Lv) | 4.9 ± 0.1 | 4.5 ± 0.3 | 0.07 |
| Oral dryness | 26.7 ± 0.3 | 26.3 ± 1.1 | 0.71 |
| Tongue pressure (kPa) | 32.4 ± 0.5 | 30.5 ± 1.3 | 0.28 |
Data are presented as the mean ± standard deviation, or number of participants (%).
CDA: Complete dental arch.
SDA: shortened dental arch.
Number of functional teeth: Natural teeth and treated teeth that have a crown, excluding bridge pontics and implants.
Masticatory performance (Score): Gummy jelly score evaluation by visual inspection.
Occlusal force (kgf): Measured by the occlusal force meter.
Oral cleanliness (Lv): Bacterial count (Level 1–7) on the tongue surface using a dielectrophoretic impedance measurement method.
Oral dryness: Maximum value of two measurements on the tongue using an oral moisture meter.
Tongue pressure (kPa): Maximum value obtained from two measurements using the JMS tongue pressure meter.
p: Comparison of CDA and SDA by Mann-Whitney U test.
Significant difference between CDA and SDA, by the Mann-Whitney U test or χ-square test.