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Responses from smart toothbrush users. The orange bar represents children, and the green bar represents parents. The x-axis shows the answers, whereas the y-axis shows the counts of the persons. The following questions were asked: (a) “What are the useful functions of ST?”, (b) “What are the inconveniences associated with using ST?”, (c) “Does ST help with oral hygiene?”, and (d) “Are you willing to use ST continuously?”.
