Division of Epidemiology, Department of Health Informatics and Public Health, School of Public Health, Tohoku University Graduate School of Medicine, 2-1, Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan.
Department of Medical Statistics, Faculty of Medicine, Toho University, Tokyo, Japan.
BMC Geriatr. 2022 Oct 24;22(1):820. doi: 10.1186/s12877-022-03541-2.
Tooth loss has been reportedly associated with shorter disability-free life expectancy (DFLE). However, no study has explored whether oral self-care offsets reduction in DFLE. The present study aimed to assess the association between oral self-care and DFLE in older individuals with tooth loss.
Data on the 13-year follow-up from a cohort study of 14,206 older Japanese adults aged ≥ 65 years in 2006 were analyzed. Information on the number of remaining teeth was collected using a questionnaire, and the participants were then categorized into three groups (0-9, 10-19, and ≥ 20 teeth). Additionally, "0-9" and "10-19" groups were divided into two subgroups based on whether they practiced oral self-care. DFLE was defined as the average number of years a person could expect to live without disability, and was calculated by the multistate life table method based on a Markov model.
DFLE (95% confidence interval) was 19.0 years (18.7-19.4) for 0-9 teeth, 20.1 (19.7-20.5) for 10-19 teeth, and 21.6 (21.2-21.9) for ≥ 20 teeth for men. For women, DFLE was 22.6 (22.3-22.9), 23.5 (23.1-23.8), and 24.7 (24.3-25.1), respectively. Practicing oral self-care was associated with longer DFLE, by 1.6-1.9 years with brushing ≥ 2 times a day in people with 0-9 and 10-19 teeth, and by 3.0-3.1 years with the use of dentures in those with 0-9 teeth.
Practicing oral self-care is associated with an increase in DFLE in older people with tooth loss.
据报道，牙齿缺失与无残疾预期寿命（DFLE）缩短有关。然而，尚无研究探讨口腔自我保健是否可以弥补 DFLE 的减少。本研究旨在评估牙齿缺失的老年个体中口腔自我保健与 DFLE 之间的关系。
对 2006 年一项针对 14206 名年龄≥65 岁的日本老年人的队列研究的 13 年随访数据进行了分析。使用问卷收集了剩余牙齿数量的信息，然后将参与者分为三组（0-9、10-19 和≥20 颗牙齿）。此外，“0-9”和“10-19”组还根据是否进行口腔自我保健分为两个亚组。DFLE 定义为一个人无残疾预期可存活的平均年数，并通过基于马尔可夫模型的多状态生命表方法计算得出。
男性中，0-9 颗牙齿的 DFLE（95%置信区间）为 19.0 年（18.7-19.4），10-19 颗牙齿为 20.1 年（19.7-20.5），≥20 颗牙齿为 21.6 年（21.2-21.9）。对于女性，DFLE 分别为 22.6 年（22.3-22.9）、23.5 年（23.1-23.8）和 24.7 年（24.3-25.1）。在 0-9 颗和 10-19 颗牙齿的人群中，每天刷牙≥2 次的口腔自我保健与 1.6-1.9 年的 DFLE 延长相关，而在 0-9 颗牙齿的人群中使用假牙与 3.0-3.1 年的 DFLE 延长相关。
在牙齿缺失的老年人中，进行口腔自我保健与 DFLE 的增加有关。
