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. 2021 Jul 27;13(1):213–220. doi: 10.1007/s41999-021-00547-8

Table 2.

Characteristics of the residents in long-term care facilities divided into groups according to plaque index (PI) and the level of oral hygiene

Characteristic PI < 2
Good oral hygiene
N = 48
PI 2– < 3
Moderate oral hygiene
N = 81
PI ≥ 3
Poor oral hygiene
N = 102
P value*
Nurses’ assessment
Age, mean (SD) 81 (8) 81 (9) 81 (9) 0.83
Female, N (%) 32 (67) 58 (73) 75 (74) 0.42
Education, < 8 years, N (%) 17 (39) 30 (39) 32 (36) 0.71
Dementia, N (%) 28 (58) 55 (68) 79 (77) 0.015
MMSE, mean (SD) 16.5 (6.8) 13.9 (7.7) 12.8 (7.0) 0.010
CDR- requires much help with personal care, N (%) 35 (80) 71 (91) 93 (91) 0.073
Number of continuous medications, mean (SD) 9.6 (3.4) 9.7 (3.9) 8.0 (3.3) 0.002
MNA, N (%) 0.052
  ≥ 24 (good nutritional status) 11 (25) 17 (23) 11 (12)
 17–23 (risk of malnutrition) 28 (64) 45 (62) 65 (71)
  < 17 (malnutrition) 5 (11) 11 (15) 16 (17)
Swallowing difficulty, N (%) 9 (20) 15 (20) 18 (19) 0.89
Daily toothbrushing, N (%) 45 (94) 73 (91) 92 (91) 0.62
Latest oral examination performed by a dentist/dental hygienist less than 1 year ago, N (%) 27 (56) 36 (44) 43 (42) 0.13
HRQoL index score, mean (SD) 0.650 (0.148) 0.628 (0.120) 0.613 (0.125) 0.098
Dentists’ clinical oral examination
Number of teeth, mean (SD) 15.4 (7.9) 14.1 (8.3) 12.8 (8.0) 0.058
Brushing teeth independently, N (%) 14 (30) 15 (19) 16 (16) 0.069
Food depris, N (%) 19 (40) 44 (56) 69 (70)  < 0.001
BOP, % 70 (36) 84 (29) 91 (25)  < 0.001
Caries, N (%) 21 (46) 48 (62) 63 (62) 0.092
Reduced salivation, N (%) 32 (68) 59 (75) 81 (82) 0.060
ADS, mean (SD) 3.2 (1.7) 4.0 (1.7) 4.5 (1.8)  < 0.001

SD standard deviation; MMSE Mini Mental State Examination; CDR Clinical Dementia Rating Scale; MNA Mini Nutritional Assesment; HRQoL Health Related Quality of Life; BOP Bleeding on probing; ADS Clinical Asymptomatic Dental Score

*P for linearity