Health Behaviors and Tooth Retention among Older Adults in China: Findings from the 4th Chinese National Oral Health Survey
Abstract Background This study aimed to examine the association between oral health behaviors and tooth retention among Chinese older adults. Methods Data were used from the 4th Chinese National Oral Health Survey, a nationally representative sample. The sample included 9054 older adults aged 55 to 74. A chi-square test was used for univariate analysis. Multivariate Logistic regression was used to explore the association between health behaviors and the number of remaining teeth. Results The average number of remaining teeth in the sample was 24.4 ± 7.8. There was a higher proportion of residents living in urban areas with ≥ 20 teeth than rural residents (83.2% vs 79.4%, χ2 = 20.862, p = 0.000); and a higher proportion of individuals with high education levels with ≥ 20 teeth compared to those with low education levels (χ2 = 148.168, P = 0.000). Logistic regression models showed that older adults who used toothpicks (OR = 3.37, 95% CI: 2.94–3.85), dental floss (OR = 1.93, 95%CI: 1.05–3.53), toothpaste (OR = 3.89, 95%CI: 3.14–4.83); and never smoked (OR = 1.43 95%CI: 1.20–1.70) were more likely to retain 20 or more natural teeth; whereas older adults who had a dental visit were less likely to retain 20 or more natural teeth (OR = 0.45, 95% CI: 0.39-052). Conclusion This study did not find the association between frequency of tooth brushing and tooth retention. This study demonstrates that improvement of oral hygiene and preventive dental care are key for good oral health.