Division of Oral Reconstruction and Rehabilitation, Kyushu Dental University, Kitakyushu City, Japan.
Tokyo Metropolitan Institute of Gerontology, Itabashi-Ku, Japan.
J Periodontal Res. 2022 Dec;57(6):1139-1147. doi: 10.1111/jre.13051. Epub 2022 Sep 4.
To determine whether periodontal status is associated with oral function, including masticatory performance and occlusal force, among community-dwelling older adults.
Although a potential association between periodontal status and oral function has been reported, variations in the root surface area (RSA) of each tooth have not been considered.
We used data from a population-based study involving community-dwelling older adults. The RSA with periodontal ligament (RSA-PL), which quantifies the RSA attached to the periodontal ligament and alveolar bone, was calculated based on full-mouth periodontal examination. Masticatory performance was assessed using spectrophotometric measurement of the color (a* value) of color-changing chewing gum. The bilateral maximal occlusal force (MOF) was measured using a pressure-sensitive sheet and dedicated software. The associations of the RSA-PL, a quantitative marker of periodontal tissue support, with the a* value and MOF were assessed using linear regression models.
The analyses included data from 250 adults [60.8% women; age, mean (standard deviation) 82.5 (5.0) years]. On average, the study participants had an RSA-PL of 26.3 cm , a* value of 25.0, and an MOF value of 555.1 N. After adjustments for potential confounders, including dentition status, age, sex, dental visit regularity, smoking status, physical activity level, depressive symptoms, a history of stroke or diabetes mellitus, and body mass index, the RSA-PL was found to be associated with the a* value [coefficient (per 1 cm increase): 0.16, 95% confidence interval (CI) 0.10-0.22)] and MOF (coefficient: 9.2, 95% CI 5.3-13.1).
This study demonstrated that greater amounts of remaining tooth-supporting structures, indicated by higher RSA-PL values, were associated with better masticatory performance and a higher occlusal force among community-dwelling older adults.
确定牙周状况是否与社区老年人的口腔功能相关，包括咀嚼性能和咬合力。
尽管已有研究报道牙周状况与口腔功能之间存在潜在关联，但尚未考虑到每个牙齿的根面面积（RSA）差异。
我们使用了一项基于人群的社区老年人研究的数据。根据全口牙周检查，计算牙周韧带附着的 RSA（RSA-PL），以量化附着于牙周韧带和牙槽骨的 RSA。使用分光光度法测量变色口香糖的颜色（a值）来评估咀嚼性能。使用压敏片和专用软件测量双侧最大咬合力（MOF）。使用线性回归模型评估定量评估牙周组织支持的 RSA-PL 与 a值和 MOF 的相关性。
共纳入了 250 名成年人的数据（60.8%为女性；年龄，平均值±标准差，82.5±5.0 岁）。研究参与者的 RSA-PL 平均为 26.3cm，a值为 25.0，MOF 值为 555.1N。在校正了包括牙齿状况、年龄、性别、看牙频率、吸烟状况、身体活动水平、抑郁症状、中风或糖尿病病史以及体重指数等潜在混杂因素后，发现 RSA-PL 与 a值（每增加 1cm 的系数：0.16，95%置信区间：0.10-0.22）和 MOF（系数：9.2，95%置信区间：5.3-13.1）相关。
本研究表明，社区老年人中，剩余的牙齿支持结构较多，RSA-PL 值较高，与更好的咀嚼性能和更高的咬合力相关。
