From: Revisiting the link between cognitive decline and masticatory dysfunction
Search criteria: 1. Key word combination: (“mixing ability” OR “cutting ability” OR “crushing ability” OR “masticatory ability” OR “chewing ability” OR “masticatory performance” OR “masticatory efficiency” OR “chewing efficiency” OR “chewing performance”) AND (cognit* OR memory OR dement*) AND (cognit* OR memory OR dement*) 2. Language: English 3. Publication date: 2012.10.15–2017.10.15 | |||
---|---|---|---|
Reference | Study group | Outcome assessment | Major findings (direct quotation) |
Kim et al. 2017 [34] | 295 participants (age ≥ 70 years), a rural city of Korea | Color- changeable chewing gum, MMSE-DS, ADL, MNA | ‘Our findings suggest that poor chewing ability is associated with cognitive impairment or dementia in the elderly living in rural area.’ |
Campos et al. 2017 [38] | 16 AD patients (mean age = 76.7yers) and 16 controls (mean age = 75.2 years) | Optocal chewable test, sieve fractionation test, MMSE | ‘Compared to controls, mild AD patients had decreased MP (P < 0.01) and MMSE (P = 0.01). MP showed a moderate negative correlation with MMSE (r = −0.69).’ |
Weijenberg et al. 2015 [37] | 114 patients with dementia (age 66–97 years) | Two-color gum mixing ability test, a multi-domain neuropsychological test battery | ‘Significant relationships were observed between masticatory performance and general cognition and between masticatory performance and verbal fluency.’ |
Elsig et al. 2015 [36] | 29 patients with dementia (age ≥ 75 years), 22 controlsa | Two-color mixing test, dental and nutritional assessment | ‘The chewing efficiency by visual inspection proved worse in participants with dementia than in the controls (p < 0.011) and explained 9.3% of the variance in the diagnosis of dementia.’ |
Kimura et al. 2013 [35] | 269 community-dwelling elderly aged ≥75 living in Tosa, Japan | Color-changeable chewing gum, MMSE, HDSR and FAB, ADL, QOL, FDSK-11 | ‘Lower cognitive functions were significantly related to low chewing ability; MMSE (P = 0.022), HDSR (P = 0.017) and FAB (P = 0.002).’ |