Dental Assistant Practice Exam

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Study for the Dental Assistant Exam. Prepare with flashcards and multiple choice questions. Each question includes hints and explanations to help you succeed. Get ready for your exam today!

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How long can IRM be traditionally used before it needs replacement?

Up to 6 months
Up to 1 year
Up to 18 months
Less than 1 month

The correct answer is: Up to 1 year

IRM, or Intermediate Restorative Material, is commonly used in dental practices for temporary restorations or as a base under permanent restorations. Its traditional use is typically recommended for a duration of up to 1 year, allowing adequate time for the tooth structure to stabilize or for the patient to return for further treatment. This timeframe aligns with its properties, which provide satisfactory sealing and insulation but may not have the durability of permanent materials for longer periods. Using IRM for over a year may increase the risk of deterioration or failure, possibly leading to further complications in dental health or the need for additional interventions. Thus, the recommendation of up to 1 year is essential for maintaining effective dental restoration practices.