When checking for soft deposits after cleaning, what is the least effective method?

The least effective method for checking for soft deposits after cleaning is checking visually without tools. This approach relies solely on observation and can easily miss areas where soft deposits, such as plaque or biofilm, may still be present. Soft deposits can be translucent or blend in with the color of the tooth enamel, making them difficult to identify visually alone.

In contrast, using a mirror with indirect vision allows the dental professional to see areas that may not be directly visible, leading to a more thorough evaluation. Using air to dry off the teeth can enhance visibility and help reveal soft deposits by causing them to appear more prominent against the dry tooth surface. Additionally, using a dental scaler provides tactile feedback, which can help in detecting and removing soft deposits that might be missed by sight alone. Each of these methods supplements visual inspection and increases the likelihood of identifying plaque or other soft deposits effectively.