Do Loc, Ha Diep, Peres Marco A, Skinner John, Byun Roy, Spencer A John
Australian Research Centre for Population Oral Health (ARCPOH), School of Dentistry, Faculty of Health Science, The University of Adelaide, South Australia, Australia.
Centre for Oral Health Strategy, NSW Ministry of Health, Wentworthville, New South Wales, Australia.
Community Dent Oral Epidemiol. 2017 Jun;45(3):225-232. doi: 10.1111/cdoe.12280. Epub 2017 Jan 16.
Lifetime access to fluoridated water (FW) is associated with lower caries experience. However, assessing this association in adults is likely affected by age. Cohort stratification and categorization of per cent lifetime access to fluoridated water (% LAFW) within cohorts are current approaches to this assessment. These approaches require an examination of the % LAFW and caries experience variation within and across age groups and their association to inform future analyses.
This secondary analysis aimed to examine the age group variation in % LAFW and caries experience; and the association of % LAFW with caries within and across age groups of adults.
A secondary analysis was undertaken using the Australian National Survey of Adult Oral Health 2004-2006 data on 4090 persons aged 15-91 years randomly sampled by a stratified, multistage probability method. Study participants underwent an interview, an oral examination by trained and standardized dentists to determine decayed, missing or filled tooth surfaces (DMFS) and a mailed self-complete questionnaire which collected residential history to calculate % LAFW. Variations in % LAFW and DMFS across age groups (15-34; 35-44; 45-54; 55+) were examined. Multivariable regression log-link models were generated for DMFS score within each age group.
The age groups varied in values and distribution of % LAFW. Caries experience was strongly associated with age. % LAFW was significantly associated with DMFS score in the two younger age groups, but not in the others. Multivariable regression models showed that the highest % LAFW quartile had significantly lower DMFS count than the lowest quartile in the two younger age groups (mean ratios: 0.67 and 0.78, respectively), controlling for other covariates.
Access to FW was associated with caries experience in Australian adults. The magnitude of associations varied between age groups, dependent on the natural history of caries and its measurement by DMFS.
终生饮用含氟水（FW）与较低的龋齿经历相关。然而，在成年人中评估这种关联可能会受到年龄的影响。队列分层以及对队列中终生饮用含氟水百分比（%LAFW）的分类是目前进行此项评估的方法。这些方法需要检查%LAFW和龋齿经历在年龄组内和年龄组间的变化及其关联，以为未来分析提供信息。
这项二次分析旨在研究%LAFW和龋齿经历在年龄组间的差异；以及%LAFW与成年人年龄组内和年龄组间龋齿的关联。
采用2004 - 2006年澳大利亚全国成人口腔健康调查数据进行二次分析，该数据通过分层多阶段概率抽样法对4090名年龄在15 - 91岁的人进行随机抽样。研究参与者接受了访谈、由经过培训且标准化的牙医进行口腔检查以确定龋坏、缺失或充填牙面（DMFS），并收到一份邮寄的自我填写问卷，该问卷收集居住史以计算%LAFW。检查了%LAFW和DMFS在不同年龄组（15 - 34岁；35 - 44岁；45 - 54岁；55岁及以上）之间的差异。为每个年龄组的DMFS评分生成多变量回归对数链接模型。
各年龄组在%LAFW的值和分布上存在差异。龋齿经历与年龄密切相关。%LAFW在两个较年轻的年龄组中与DMFS评分显著相关，但在其他年龄组中并非如此。多变量回归模型显示，在控制其他协变量的情况下，在两个较年轻的年龄组中，%LAFW最高四分位数的DMFS计数显著低于最低四分位数（平均比率分别为0.67和0.78）。
饮用FW与澳大利亚成年人的龋齿经历相关。关联程度在不同年龄组之间有所不同，这取决于龋齿的自然史及其通过DMFS的测量。
