The Sonicare brush manual recommends brushing for 3 seconds on the front of each tooth at a 45 degree between teeth and gum line. However, putting the brush at that position doesn't clean the entire tooth crowth. So that means another 3 seconds on the crown surface. The brush needs to be at 3 different positions in order to cover the entire outside of a quadrant. Here's the math.
Cleaning outside of one quadrant = 3 positions x 2 (gum + crown) x 3 seconds = 18 sec
Cleaning inside of one quadrant = 3 positions x 2 (gum + crown) x 3 seconds = 18 sec
Cleaning the cutting surface = 2 positions x 3 seconds = 6 sec
Total for a quadrant = 42 sec
And there's a timer that would turn off the brush after 2 minutes. So how exactly can I finish brushing all four quadrants in 2 minutes?
2006-08-17
07:12:44
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6 answers
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➔ Dental