Abstract: Objective To investigate the current situation and influencing factors of oral health-related quality of life(OHRQoL) in the elderly with mild cognitive impairment(MCI). Methods From March to June 2023, a total of 166 elderly patients with MCI were enrolled in this study. Professional oral examination, oral health status and behavior assessment scale were used to evaluate the oral health status and behavior of the elderly with MCI. The Geriatric Oral Health Assessment Index Scale(GOHAI) was used to assess the level of OHRQoL. Single factor analysis and multiple linear regression were used to analyze the influencing factors of OHRQoL in the elderly patients with MCI. Results The total GOHAI score of the elderly patients with MCI was 45.67±7.99. The score of GOHAI showed significant differences between the elderly with or without caries, paradentitis, unilateral chewing, oral and maxillofacial pain, and between the elderly with different self-perceived oral health status, brushing time and brushing style(all P＜0.05).Multivariate linear regression showed that chewing ability, oral and maxillofacial pain, self-perceived oral health status, brushing time and brushing style were the independent influencing factors for OHROoL in the elderly with MCI(all P< 0.05). Conclusions The OHRQoL of the elderly patients with MCI is at a low level. Attention should be paid to the elderly patients with MCI who have poor mastication ability, oral and maxillofacial pain, poor self-perceived oral health status, incorrect burshing time and incorrect brushing methods.

Key words: mild cognitive impairment, aged, oral health-related quality of life, oral health