Association of oral hygiene practices with the outcome of untreated dental caries and its clinical consequences in pre and primary school children A cross-sectional study in a northern province of Saudi Arabia

Objectives
To assess the association amongst oral hygiene practices, untreated dental caries (UDC) and clinical consequences of UDC in pre- and primary school children aged 3–5 and 6–7 years.
Materials and methods
A total of 250 subjects were recruited. The demographic and oral hygiene data were collected using a closed-ended questionnaire. The UDC was measured using the ‘d/D' component of the decayed, missing, filled teeth (dmft/DMFT) index, and its clinical consequences were recorded using the ‘p/P' component of the pulpal involvement, ulceration, fistula and abscess (pufa/PUFA) index. The data were analyzed by multiple logistic regression.
Results
Overall, 94.2% and 56.5% of the participants had one or more UDC and pulp involvement (p ≥ 1), respectively in 3–5-year-old age group. In the 6-7-year- age group the prevalence of UDC was 26.7% and the pulp involvement was 11.6%. Children who brushed with their fingers were 4.7 times more likely to have UDC (crude odds ratio [COR] = 4.71; 95% CI: 1.21–18.40). Twice-daily brushing resulted in a 39% (p = 0.732) lower likelihood of having UDC compared with once-daily brushing (COR = 0.61; 95% CI: 0.04, 10.09). Children with irregular brushing frequency were 3.2 times more likely to have pulpal involvement (COR = 3.21; 95% CI: 1.74–5.93).
Conclusion
Finger brushing, irregular frequency of brushing and lack of parental supervision whilst brushing were associated with UDC and its consequences.