Association Between Change in Dental Hygiene Practices and Incidence of Dementia.

IF 6.8 1区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE

Journal of Clinical Periodontology Pub Date : 2026-04-16 DOI:10.1111/jcpe.70128

Sangwoo Park,Jonghyeok Lee,Sun Jae Park,Jihun Song,Hye Jun Kim,Sung Min Kim,Hyeokjong Lee,Jaewon Kim,Su Kyoung Lee,Hyun-Jae Cho,Kyae Hyung Kim,Sang Min Park

{"title":"Association Between Change in Dental Hygiene Practices and Incidence of Dementia.","authors":"Sangwoo Park,Jonghyeok Lee,Sun Jae Park,Jihun Song,Hye Jun Kim,Sung Min Kim,Hyeokjong Lee,Jaewon Kim,Su Kyoung Lee,Hyun-Jae Cho,Kyae Hyung Kim,Sang Min Park","doi":"10.1111/jcpe.70128","DOIUrl":null,"url":null,"abstract":"AIM\r\nTo investigate whether changes in toothbrushing frequency influence the incidence of dementia.\r\n\r\nMATERIALS AND METHODS\r\nThis is a retrospective cohort study using the Korean National Health Insurance Service database. Among 91,978 adults who received two oral health screenings between 2002 and 2005, 74,156 were included after exclusions. Participants were followed until 2019. Participants were categorised into nine groups based on toothbrushing frequency (≤ 1, 2, ≥ 3 times/day) at each screening. Main outcomes such as incidence of overall dementia, Alzheimer's disease (AD) and vascular dementia (VaD) were assessed using Cox proportional hazards models, adjusting for potential confounders.\r\n\r\nRESULTS\r\nIndividuals who increased their toothbrushing frequency to ≥ 3 times/day showed reduced risks of overall dementia (aHR 0.79, 95% CI 0.64-0.99) and AD (aHR 0.76, 95% CI 0.59-0.96). Those who decreased their brushing to ≤ 1 time/day had a higher risk of AD (aHR 1.31, 95% CI 1.05-1.65). A decrease from moderate brushing frequency was associated with elevated VaD risk (aHR 1.32, 95% CI 1.02-1.70).\r\n\r\nCONCLUSION\r\nImprovements in dental hygiene practices may lower dementia risk, even among those with poor baseline habits. Conversely, lapses in oral care among previously consistent brushers may increase dementia risk.","PeriodicalId":15380,"journal":{"name":"Journal of Clinical Periodontology","volume":"3 1","pages":""},"PeriodicalIF":6.8000,"publicationDate":"2026-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Clinical Periodontology","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1111/jcpe.70128","RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"DENTISTRY, ORAL SURGERY & MEDICINE","Score":null,"Total":0}

引用次数: 0

Abstract

AIM To investigate whether changes in toothbrushing frequency influence the incidence of dementia. MATERIALS AND METHODS This is a retrospective cohort study using the Korean National Health Insurance Service database. Among 91,978 adults who received two oral health screenings between 2002 and 2005, 74,156 were included after exclusions. Participants were followed until 2019. Participants were categorised into nine groups based on toothbrushing frequency (≤ 1, 2, ≥ 3 times/day) at each screening. Main outcomes such as incidence of overall dementia, Alzheimer's disease (AD) and vascular dementia (VaD) were assessed using Cox proportional hazards models, adjusting for potential confounders. RESULTS Individuals who increased their toothbrushing frequency to ≥ 3 times/day showed reduced risks of overall dementia (aHR 0.79, 95% CI 0.64-0.99) and AD (aHR 0.76, 95% CI 0.59-0.96). Those who decreased their brushing to ≤ 1 time/day had a higher risk of AD (aHR 1.31, 95% CI 1.05-1.65). A decrease from moderate brushing frequency was associated with elevated VaD risk (aHR 1.32, 95% CI 1.02-1.70). CONCLUSION Improvements in dental hygiene practices may lower dementia risk, even among those with poor baseline habits. Conversely, lapses in oral care among previously consistent brushers may increase dementia risk.

查看原文本刊更多论文

口腔卫生习惯改变与痴呆发病率之间的关系。

目的探讨刷牙频率的变化是否影响痴呆的发病率。材料与方法这是一项使用韩国国民健康保险服务数据库的回顾性队列研究。在2002年至2005年期间接受两次口腔健康检查的91,978名成年人中，排除后纳入了74156名。参与者被跟踪到2019年。根据每次筛查时的刷牙频率（≤1次、2次、≥3次/天）将参与者分为9组。使用Cox比例风险模型评估主要结局，如总体痴呆、阿尔茨海默病（AD）和血管性痴呆（VaD）的发病率，并对潜在混杂因素进行调整。结果将刷牙频率增加到≥3次/天的个体总体痴呆（aHR 0.79, 95% CI 0.64-0.99）和AD （aHR 0.76, 95% CI 0.59-0.96）的风险降低。那些每天刷牙次数减少到≤1次的人患AD的风险更高（aHR 1.31, 95% CI 1.05-1.65）。中等刷牙频率的降低与VaD风险升高相关（aHR 1.32, 95% CI 1.02-1.70）。结论：改善口腔卫生习惯可降低痴呆风险，即使对那些基线习惯较差的人群也是如此。相反，先前一贯刷牙者的口腔护理失误可能会增加患痴呆症的风险。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Journal of Clinical Periodontology 医学-牙科与口腔外科

CiteScore

13.30

自引率

10.40%

发文量

175

审稿时长

3-8 weeks

期刊介绍： Journal of Clinical Periodontology was founded by the British, Dutch, French, German, Scandinavian, and Swiss Societies of Periodontology. The aim of the Journal of Clinical Periodontology is to provide the platform for exchange of scientific and clinical progress in the field of Periodontology and allied disciplines, and to do so at the highest possible level. The Journal also aims to facilitate the application of new scientific knowledge to the daily practice of the concerned disciplines and addresses both practicing clinicians and academics. The Journal is the official publication of the European Federation of Periodontology but wishes to retain its international scope. The Journal publishes original contributions of high scientific merit in the fields of periodontology and implant dentistry. Its scope encompasses the physiology and pathology of the periodontium, the tissue integration of dental implants, the biology and the modulation of periodontal and alveolar bone healing and regeneration, diagnosis, epidemiology, prevention and therapy of periodontal disease, the clinical aspects of tooth replacement with dental implants, and the comprehensive rehabilitation of the periodontal patient. Review articles by experts on new developments in basic and applied periodontal science and associated dental disciplines, advances in periodontal or implant techniques and procedures, and case reports which illustrate important new information are also welcome.