Conclusions This study quantitatively confirmed that dental hygienists have individual distinctive rhythms during tooth brushing. All arm joints moved synchronously during brushing, and tooth brushing motion was controlled by coordinated movement of the joints. The elbow generated an individual’s frequency through a stabilizing movement. Clinical relevance The shoulder and wrist control the hand motion, and the elbow generates the cyclic rhythm during tooth brushing. (Source: Clinical Oral Investigations)
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