Test your knowledge




3. What is the estimated prevalence of signs of erosion in the Western population?
a)
20%


b)
30%


c)
50%


d)
70%





5. Which of the following factors need not be considered when diagnosing erosion?
a)


b)


c)


d)







9. Which of the following is not one of the main biological factors related to erosion?
a)


b)


c)


d)




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