Dental caries risk assessment in primary school children aged 11 to 12 years: Case of Nyarugenge District, Rwanda

Background Dental caries in children is a public health concern affecting 60-90% of children worldwide. Dental caries perturbs children's eating ability, school performance as well as overall quality of life. This study aimed to determine the prevalence of dental caries and its risk factors among children aged 11 to 12 years in Nyarugenge District in Kigali, Rwanda. Methods The cross-sectional analytical study design involved 400 children from Nyarugenge district. By stratified sampling, we selected Gitega and Butamwa primary schools and used systematic sampling to choose the pupils into the sample. An interview and oral examination were performed. Descriptive statistics and logistic regression were done. Results Dental caries was observed in 25.5% of children. Deep pits and fissures carried a two-fold risk of getting dental caries than children without deep pits and fissures (OR = 2.4, 95% CI = [1.5; 4.0], P-value < 0.001). Dental plaque was identified as a risk factor for getting dental caries (OR=2.2, 95% CI = [1.2; 3.3], P-value: 0.01). Conclusion Dental caries is a public health concern associated with poor oral hygiene, deep pit, and fissures among children aged 11 to 12 years old. Oral hygiene education, application of ART, and regular screening programs are in need.

Effects of vitamin D status on oral health.

Normal humans of all ages have the innate ability to produce vitamin D following sunlight exposure. Inadequate vitamin D status has shown to be associated with a wide variety of diseases, including oral health disorders. Insufficient sunlight exposure may accelerate some of these diseases, possibly due to impaired vitamin D synthesis. The beneficial effects of vitamin D on oral health are not only limited to the direct effects on the tooth mineralization, but are also exerted through the anti-inflammatory functions and the ability to stimulate the production of anti-microbial peptides. In this article, we will briefly discuss the genesis of various oral diseases due to inadequate vitamin D level in the body and elucidate the potential benefits of safe sunlight exposure for the maintenance of oral and general health.