Lee Ga-Yeong, Koh Sang-Baek, Kim Nam-Hee
Department of Dental Hygiene, Graduate School, Yonsei University, Seoul, Korea.
Department of Preventive Medicine, Wonju College of Medicine, Yonsei University, Korea.
Dent Med Probl. 2018 Jan-Mar;55(1):49-56. doi: 10.17219/dmp/81033.
The number of individual teeth decreases with age, resulting in a decrease in masticatory capacity, and is an important indicator of oral health. However, it is difficult to estimate the number of present teeth on the basis of age alone.
We aimed to determine whether tooth retention could be estimated by the number of present teeth in middle-old-aged individuals.
We used data from the Korean Genome and Epidemiology Study on Atherosclerosis Risk of Rural Areas in the Korean General Population (KoGES-ARIRANG). Subjects (40-75 years old) were invited to participate in a 3-year prospective follow-up survey conducted from 2010 to 2014. A total of 557 individuals (219 men and 338 women) took part in the study. Tooth retention was estimated from the number of present teeth by multivariate logistic regression analysis using SPSS v. 20.0.
In total, 294 (52.8%) subjects retained teeth during a 3-year follow-up period. The number of present teeth and the proportion of subjects with complete tooth retention after 3 years decreased with increasing age. A greater number of present teeth in the baseline year was associated with complete tooth retention after 3 years in a greater proportion of subjects (p < 0.001). Logistic regression analysis revealed that the proportion of subjects with tooth retention in the Q4 quartile (28 teeth) was 9.17 times that in the Q1 quartile (less than 26 present teeth), even after adjusting for sociodemographic factors and oral health behavior in middle-aged individuals. In elderly individuals, tooth retention in the Q4 quartile (28 teeth) was 4.50 times that in the Q1 quartile (less than 17 teeth).
The number of present teeth could be used to estimate tooth retention over a 3-year period. This highlights the importance of promoting oral health care in middle-aged individuals before tooth loss occurs.
随着年龄增长，个体牙齿数量减少，导致咀嚼能力下降，这是口腔健康的一个重要指标。然而，仅根据年龄很难估计现存牙齿的数量。
我们旨在确定能否通过中老年个体的现存牙齿数量来估计牙齿保留情况。
我们使用了韩国基因组与流行病学农村地区动脉粥样硬化风险研究（KoGES - ARIRANG）的数据。邀请年龄在40 - 75岁的受试者参与2010年至2014年进行的为期3年的前瞻性随访调查。共有557名个体（219名男性和338名女性）参与了该研究。使用SPSS v. 20.0通过多因素逻辑回归分析从现存牙齿数量估计牙齿保留情况。
在为期3年的随访期间，共有294名（52.8%）受试者保留了牙齿。随着年龄增长，现存牙齿数量以及3年后牙齿完全保留的受试者比例均下降。基线年份现存牙齿数量较多与3年后更大比例的受试者牙齿完全保留相关（p < 0.001）。逻辑回归分析显示，即使在调整了中年个体的社会人口学因素和口腔健康行为后，处于第四四分位数（28颗牙齿）的受试者牙齿保留比例是第一四分位数（现存牙齿少于26颗）的9.17倍。在老年个体中，第四四分位数（28颗牙齿）的牙齿保留比例是第一四分位数（少于17颗牙齿）的4.50倍。
现存牙齿数量可用于估计3年期间的牙齿保留情况。这凸显了在中年个体牙齿丧失发生之前促进口腔保健的重要性。
