Alot of us do this wrongly daily - Doctor in a bit.

For 20 years plus i never realised I've been brushing the wrong way all my life until in one of my classes, it stroke my attention. Tooth paste contains flouride which is an important element for a stronger and healthy teeth. It helps to reduce the rate of demineralization due to fermentation of dietary carbohydrate by bacteria within the plaque on the enamel producing acids.
When brushing, its advisable to avoid rinsing ones mouth after pouring out the excess. To retain some reasonable amount of flouride to be absorbed by the saliva and have a longer effect on the teeth preventing dental caries.
Thanks, have a great weekend.