Prophylaxis means guarding beforehand to prevent infectious diseases. Learn about different types of prophylaxis , such as vaccines, antibiotics, chemoprophylaxis, and non-pharmacological measures, with examples and sources. Dental prophylaxis is meant to prevent cavities and gum problems before they start. Learn what dental prophylaxis involves and how it benefits your oral health. Prophylaxis is the prevention of disease through various measures, such as vaccines or hygiene practices. It aims to prevent the onset of infection by preemptively boosting immune defenses. Prophylaxis , derived from the Greek word for "to guard," refers to preventive medical treatments designed to ward off diseases or disease complications before they strike.