Root caries experience among older adults in a country with long term systemic water fluoridation
Abstract ObjectiveThe objective of this study was to explore dental caries experience in older Singaporeans (60-90 years old), a country with over 60 years of water fluoridation, and to examine what risk factors contribute to prevalence of oral disease, in particular root caries, and to assess the impact of service utilisation on treatment of root caries.Methodology500 community dwelling older adults, aged 60 years and above were invited to participate in this cross-sectional study. Participants completed a survey which included questions related to demographics (e.g. age, gender, ethnicity, education level) self-rated oral health, oral health attitudes and frequency of dental visits. A clinical examination recorded details of decayed, missing and filled teeth; stimulated saliva flow was also measured. The main outcome of this study was prevalence of decayed and filled root surfaces (DFRS) of older adults, categorised as “low” [DFRS ≤3] and “high” [DFRS >3]. The regression models were controlled for age, gender, ethnicity, education, marital status, housing type, oral health related factors and salivary parameters. Results84.2% of the participants ethnicity was Chinese and 15.2% were Non-Chinese. The mean DFRS score was [Mean (SD), 3(3.5)], decayed [Total (Mean), 68(13.6)] and filled [Total (Mean), 287 (57.4)]. In bivariate analysis, age, ethnicity, education, dental visits, recession, restored coronal surfaces and oral health attitude were found to be significantly associated with DFRS. In final multivariate model it was found that age, ethnicity, education, pattern of dental visits, gingival recession/periodontal attachment loss and number of restored coronal surfaces are independent predictors of root caries experience in older adults. The selected risk factors in the final model explained about 20% of the variation.ConclusionHigher education and awareness increase dental care utilization which corresponds to a high filled (F) component of DFRS. Previous coronal caries experience and gingival recession/attachment loss are risk indicators of higher root caries experience.