During the day fast brushing -Toddler & child 

Besides proper/long brushing that I do for my kids teeth every night before bed, I also do once or twice fast brushing during the day. Also swishing teeth with water after each meal is a great way to remove food if you can't brush after each meal.
For tips on how to actually get your young child/toddler to brush properly and long enough, please click on the link below:
"How to get your children to brush their teeth long enough"
• Video