What Is the Difference Between the Df and DMF Indexes

question 49

Multiple Choice

What is the difference between the df and DMF indexes?

• A) The df index is intended for use in children before the age of exfoliation.
• B) The df index does not include missing teeth because of the difficulty in distinguishing primary tooth loss as a result of dental caries from those lost by natural exfoliation.
• C) The df index is for primary teeth, and the DMF index is for permanent teeth.
• D) The df index is popular in Europe, and the DMF index is popular in the United States.

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