[mhb]

> Brush from top to bottom, not side to side.

Gonna need a cite on that. Pretty sure the recommendation is to hold the brush at 45 degrees and use circular movements.

[hdjjhhvvhga]

Interesting. My dentist always told me the direction must be from the root to the top otherwise you would just push the remains of food into the gums - and it seems like a logical advice to follow.

[wingworks]

This dental hygienist also says to use a circular motion at and angle. https://youtu.be/FFq-2aA6m8Y?t=50

Maybe bring this up in your next session.