How to prevent dental cavities on my 5 yr old son?

Decay: Monitor closely. Eliminate soda, sugar products, brush after every meal, have Fluoride drops or lozenge if not in your water, regular check-ups at the dentist with Fluoride treatments.

Brush his teeth: You still have to brush his teeth for him, but also let him do it and make sure he is doing it properly, good oral hygiene habits start young. Also if he can rinse and spit, you can use a Fluoride rinse before he goes to sleep, like act.

Good oral habits : And dental check up every 6 months to a year. Oftentimes kids do not like anything in their mouths. Make it fun, use battery operated toothbrushes with their favorite character or just plain ones should do. You still have to brush his teeth and let him do it by himself at the end and guide him. Kids get easily frustrated w failures , so make it easy for him. Make it fun!

Early screening: The best prevention starts at home. To get a cavity you need 3 things. 1) fermentable carbohydrates 2) specific bacteria 3) the tooth must be susceptible. Monitor your son. Instill good habits. Go to the dentist yourself to set a good example. Get your child to a good local dentist or pedodontist to show him that he does not have to be afraid. I cannot stress this last part enough.