Which of the Following Statements Is True of Retention Pins

question 17

Multiple Choice

Which of the following statements is true of retention pins?

• A)In general, three pins are inserted to replace each missing cusp.
• B)The retention pin has deep threads that grip the dentin when screwed into tooth structure.
• C)Pins are always 0.023 mm in diameter and extend 2 mm into tooth structure.
• D)Pins are placed into the root canal of the tooth.

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