Proper brushing techniques:
Place the toothbrush against the gums at a 45 degree angle.

Move the brush back and forth gently in short strokes. Brush the outer surfaces of each tooth, upper and lower. Repeat the same method on the inside surfaces and chewing surfaces of all the teeth.

Finish by brushing the tongue to help freshen breath and remove bacteria. It’s also a good idea to rinse with a fluoride-based rinse especially made for children that you can find in the drug store.

Proper flossing techniques:
Use about 18 inches of floss, winding most of it around the middle fingers of both of your hands. Hold the floss lightly between the thumbs and forefingers. Use a gentle, back-and-forth motion to guide the floss between your child’s teeth.

Curve the floss into a C shape and slide it into the space between the gum and tooth until you feel resistance. Gently scrape the floss against the side of the tooth.

Repeat this procedure on each tooth. Don't forget the backs of the last four teeth in each corner of the mouth.

Floss aids and similar devices may make it easier for you and for you child to floss.