The relationships between mastication and cognitive function: A systematic review and meta-analysis

IF 5.7 2区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE Japanese Dental Science Review Pub Date : 2023-10-28 DOI:10.1016/j.jdsr.2023.10.001

Ma. Therese Sta. Maria , Yoko Hasegawa , Aye Mya Mya Khaing , Simonne Salazar , Takahiro Ono

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Abstract

Masticatory function such as chewing is expected to modify human cognitive function, and/or the possibility of improving cognitive function is also predicted. This systematic review investigated whether masticatory function affects cognitive function for older/young adults. Full articles written in English from January 2000 to April 2022 were collected using PubMed and Cochrane Library. Target outcomes were cognitive function test scores, cognitive processing speed (reaction time), and masticatory function. For each research question, two independent reviewers conducted the search and screening, data extraction, quality assessment, and risk of bias assessment. The reviewers resolved any disagreements by discussion. From 226 articles retrieved, 20 were included in this review. Older adults with lower scores on the cognitive function test had lower masticatory performance, lower chewing ability, chewing difficulty, and decreased number of teeth. An increased risk of cognitive impairment was found in older adults with masticatory dysfunction. For young adults, gum chewing significantly reduced the processing speed of cognitive tasks compared to no gum chewing. Although most of the evidence included had a low level of evidence and a high risk of bias because of the research designs, the results still suggest that mastication may be a factor in improving cognitive function.

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咀嚼与认知功能的关系:系统回顾与元分析

咀嚼等咀嚼功能有望改变人类的认知功能，并且/或改善认知功能的可能性也被预测。本系统综述调查了咀嚼功能是否影响老年人/年轻人的认知功能。2000年1月至2022年4月的英文论文全文收集自PubMed和Cochrane图书馆。目标结果是认知功能测试分数、认知处理速度(反应时间)和咀嚼功能。对于每个研究问题，由两名独立的审稿人进行检索和筛选、数据提取、质量评估和偏倚风险评估。审稿人通过讨论解决了任何分歧。从检索到的226篇文献中，本综述纳入了20篇。认知功能测试得分较低的老年人咀嚼功能较差，咀嚼能力较差，咀嚼困难，牙齿数量减少。有咀嚼功能障碍的老年人患认知障碍的风险增加。对于年轻人来说，嚼口香糖与不嚼口香糖相比，显著降低了认知任务的处理速度。尽管由于研究设计的原因，大多数证据的证据水平低，偏倚风险高，但结果仍然表明，咀嚼可能是改善认知功能的一个因素。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Japanese Dental Science Review DENTISTRY, ORAL SURGERY & MEDICINE-

CiteScore

9.90

自引率

1.50%

发文量

审稿时长

32 days

期刊介绍： The Japanese Dental Science Review is published by the Japanese Association for Dental Science aiming to introduce the modern aspects of the dental basic and clinical sciences in Japan, and to share and discuss the update information with foreign researchers and dentists for further development of dentistry. In principle, papers are written and submitted on the invitation of one of the Editors, although the Editors would be glad to receive suggestions. Proposals for review articles should be sent by the authors to one of the Editors by e-mail. All submitted papers are subject to the peer- refereeing process.