Brushing technique

From the age of four years, children are able to brush the teeth independently. They should learn it according to a tooth brushing technique as early as possible in order to achieve the necessary routine and habit.

The COI tooth brushing technique

COI stands for

  • C = Chewing surface
  • O = Outer surface
  • I = Inner surface

Start with the chewing surface and with the last tooth of the row of teeth. Move the toothbrush horizontally forward and backward. All four jaw halfs will always be cleaned in the same order and every chewing surface will be brushed around ten seconds with shaking motions. Clean the upper chewing surfaces of the posterior teeth first, then the lower ones.


Pay especially attention to the problem zones of the teeth: deep notches in the tooth surface of the molars (tooth fissures), interdental spaces, tooth necks and gum lines. These areas are predestined for the development of plaque and caries.


The bass technique

After cleaning the chewing surfaces, the removal of plaque from the side surfaces follows.

Hold the toothbrush at an angle of 45 degrees to the tooth axis so the bristles can penetrate into the gum lines (gum lines = crossing of the tooth to the gum). Do not exert strong pressure in order to protect the gum and not damaging it.


While cleaning the outer surface of the incisors, the incisal edges have to be set up on top of each other. Hold the toothbrush at an angle of 45 degrees.

The inner surfaces of the incisors will be cleaned vertically with shaking motions. As soon as the outer and inner surfaces are cleaned, the interdental spaces will be cleaned with rolling motions of the toothbrush from “red to white” (brush away from the gum to the dental crown).


Please ask your dentist!

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