What is a major risk factor for early childhood caries?

The selection of frequent consumption of sugary foods and drinks as a major risk factor for early childhood caries is correct because high sugar intake is closely associated with the development of dental caries. Sugars serve as a primary substrate for oral bacteria, which produce acid as a byproduct of sugar metabolism. This acid can erode tooth enamel, leading to cavities, particularly in young children whose enamel may still be developing and is more vulnerable to damage.

Moreover, children's dietary habits often include items that are high in sugar, such as sweets, juice, and soda, which can contribute to a higher incidence of caries when oral hygiene practices are not adequately maintained. Understanding the link between sugar consumption and dental health is crucial for health promotion and preventive strategies in pediatric populations.

While factors like insufficient fluoride exposure, over brushing, and late dental visits may also influence dental health, they do not have as direct or significant an impact on the development of caries in early childhood as the frequent intake of sugary foods and beverages does.