California Registered Dental Assistant (RDA) Written Practice Exam

When should you check a box of film for freshness?

1. Each time you open a new box

2. Once a month

3. Annually

4. Only upon first purchase

The correct answer is: Each time you open a new box

Each time you open a new box is the correct answer because film often comes with an expiration date, and exposure to light and heat can degrade film over time. Therefore, it's important to check the freshness before each use to ensure the quality of your photographs. Options B, C, and D are incorrect because they either don't take into account the potential for film to expire or they only check once a year or upon first purchase, which may not accurately reflect the freshness of the film when it is actually used. It's best to err on the side of caution and check the box of film for freshness each time a new box is opened.