California Registered Dental Assistant (RDA) Written Practice Exam

What adverse effect may a patient experience during tooth whitening?

1. Bleeding gums

2. Hypersensitivity

3. Dry mouth

4. Tooth decay

The correct answer is: Hypersensitivity

Tooth whitening is a process that involves using chemicals to brighten the color of the teeth. While it is generally a safe procedure, some patients may experience temporary side effects. Of the options listed, bleeding gums, dry mouth, and tooth decay are all possible consequences of poor oral hygiene, but are not directly caused by tooth whitening itself. Hypersensitivity, on the other hand, is a commonly reported adverse effect of tooth whitening. This occurs when the chemicals used during the procedure come into contact with the nerves inside the tooth, causing sensitivity to hot and cold temperatures. This sensitivity typically subsides within a few days or weeks after the procedure. Therefore, option B is the most accurate answer to this question.