Primary study · included by 1 review

Association between tooth loss and cognitive impairment in community-dwelling older Japanese adults: a 4-year prospective cohort study from the Ohasama study.

Saito 2018 · Saito Sho, Ohi Takashi, Murakami Takahisa, et al. · BMC oral health · 2018

Included by

Dentition-Cognition Relationship in Aging Populations: A Meta-Analysis of Longitudinal Data.

Non-Cochrane · aetiology · 2026 · cited as Saito 2018 · Fig. 2; Tables 1-2

Outcome this study informs	Pooled effect	Evidence	Certainty
Incident dementia Tooth loss vs Fewer lost teeth / dentate (reference) · Mean follow-up 8.87 years across all included studies	OR 1.22 [1.09, 1.36]	2 studies	GRADE not reported
Incident dementia Tooth loss vs Fewer lost teeth / dentate (reference) · Mean follow-up 8.87 years across all included studies	OR 1.37 [0.93, 2.00]	4 studies	GRADE not reported
Incident dementia Tooth loss vs Fewer lost teeth / dentate (reference) · Mean follow-up 8.87 years across all included studies	OR 1.28 [1.19, 1.38]	2 studies	GRADE not reported
Incident dementia Tooth loss vs Fewer lost teeth / dentate (reference) · Mean follow-up 8.87 years across all included studies	OR 1.26 [1.07, 1.49]	14 studies	GRADE not reported
Incident dementia Tooth loss vs Fewer lost teeth / dentate (reference) · Mean follow-up 8.87 years across all included studies	OR 1.14 [1.06, 1.22]	10 studies	GRADE not reported
Incident dementia Tooth loss vs Fewer lost teeth / dentate (reference) · Mean follow-up 8.87 years across all included studies	OR 1.21 [1.03, 1.43]	14 studies	GRADE not reported
Incident dementia Tooth loss vs Fewer lost teeth / dentate (reference) · Mean follow-up 8.87 years across all included studies	OR 1.09 [1.08, 1.11]	NR	GRADE not reported
Incident dementia Tooth loss vs Fewer lost teeth / dentate (reference) · Mean follow-up 8.87 years across all included studies	OR 1.69 [1.66, 1.72]	NR	GRADE not reported
Incident dementia Tooth loss vs Fewer lost teeth / dentate (reference) · Mean follow-up 8.87 years across all included studies	OR 1.34 [1.21, 1.49]	2 studies	GRADE not reported

1 including review in total.