Detergent foods are those recommended to be eaten after a meal to remove loose food debris and reduce the risk of caries. Which one of the following is a detergent food in this context?

Detergent foods are those that help clean the teeth as they are eaten, effectively removing loose food debris and stimulating saliva production, which can be beneficial in reducing the risk of dental caries. Carrots, particularly when raw, are known for their crunchy texture, which allows them to scrub against the surfaces of the teeth as they are chewed. This friction can help dislodge food particles and stimulate the gums, promoting oral hygiene.

In contrast, while crackers can provide some abrasive action, they can also be crumbly and tend to leave residues that may not help in cleaning the teeth as effectively. Grapes, although healthy, are high in sugar and sticky, which can contribute to plaque formation if not cleaned properly. Yoghurt, while nutritious and beneficial for oral health due to its probiotic content, does not have the same cleaning effect as crunchy, fibrous foods do. Therefore, carrots stand out as the best example of a detergent food in this context.