Oral prophylaxis is commonly known as:

Oral prophylaxis refers to a dental procedure that involves the thorough cleaning of the teeth and gums to prevent dental diseases. This procedure includes the removal of calculus (tartar), debris, stains, and plaque buildup from the teeth, which is essential for maintaining good oral health and preventing conditions such as cavities and periodontal disease. The term "prophylaxis" itself indicates a preventative approach, emphasizing the importance of cleaning to avert potential dental issues before they arise.

While some of the other options touch upon elements of dental cleaning, they do not encapsulate the full scope of what oral prophylaxis entails. For instance, a "deep cleaning procedure" typically refers to scaling and root planing, which is a treatment often employed for existing gum diseases rather than prevention. A "simple tooth brushing" does not involve professional dental tools or techniques and is insufficient to fully clean the teeth, as it cannot remove all forms of plaque and calculus. Lastly, while "a treatment for gum disease" may imply cleaning, it does not accurately represent prophylaxis since that term usually applies to preventative care before the onset of disease rather than treating an active condition.

Therefore, the definition of oral prophylaxis accurately aligns with the comprehensive cleaning of calculus, debris, stains, and plaque