National Dental Assisting Examining Board (NDAEB) Practice Exam

What method can be used to remove extrinsic stains from teeth?

1. Air-powder polishing

2. Whitening toothpaste

3. Veneers

4. Dental flossing

The correct answer is: Air-powder polishing

Air-powder polishing is an effective method for removing extrinsic stains from teeth. This technique uses a mixture of air, water, and a specially formulated powder to create a fine spray that can effectively and gently remove surface stains caused by substances like coffee, tea, tobacco, and certain foods. This method is particularly beneficial because it can reach areas that are difficult to clean with traditional brushing or flossing, and it is less abrasive than some other cleaning methods. While whitening toothpaste can help to reduce staining over time, it typically works more slowly and is less effective on the more stubborn extrinsic stains, as it is often designed for more gradual whitening rather than immediate stain removal. Veneers are a cosmetic option that can cover stains but involve a more invasive procedure and do not directly remove stains from the underlying tooth surface. Dental flossing is excellent for removing food particles and plaque between teeth but does not specifically target extrinsic stains on the surface of the teeth.