During the school-age years a child will lose 20 deciduous or baby teeth. Which of the following factors determine the rate at which children lose these teeth?
a. calcium in the diet c. regularity of brushing and flossing
b. how much sugar the child eats d. genetics and gender
D
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A Incorrect: Calcium in the diet is not a factor in determining the rate at which children lose their teeth.
B Incorrect: How much sugar children eat is not a factor in determining the rate at which they lose their teeth.
C Incorrect: The regularity of brushing and flossing is not a factor in determining the rate at which children lose their teeth.
D Correct: When children start to lose their teeth, the rate of loss is determined by genetics and gender. It is common for girls to lose their teeth earlier than boys.
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