California Registered Dental Assistant (RDA) Written Practice Exam

The polishing stroke should be directed away from the gingiva. This technique is essential for various reasons, primarily pertaining to patient safety and the prevention of trauma to the gingival tissue. Polishing away from the gingiva minimizes the risk of damaging the delicate gum tissue that surrounds the teeth.

Additionally, directing the stroke away from the gingiva helps ensure that any abrasive particles or polishing agents do not push into the sulcus or pocket area, which could lead to irritation or inflammation. Maintaining this approach also allows for more effective cleaning of the tooth surfaces, removing debris and plaque without compromising the health of the gums.

In the context of dental polishing, using strokes toward the gingiva could potentially cause harm to the gum tissue. Similarly, polishing in a circular motion can be effective in some contexts, but it does not specifically address the importance of maintaining a safe distance from the gingiva, nor does it emphasize the directional aspect essential for proper technique.