A dental prophylaxis is a cleaning treatment performed to thoroughly clean the teeth and gums. Prophylaxis is an important dental treatment for stopping the progression of gingivitis and periodontal disease. Prophylaxis is an effective procedure in keeping the oral cavity in proper health and halting the progression of gum disease. The benefits include: We recommend that prophylaxis be performed twice annually as a preventative measure, but should be completed every 3-4 months for periodontitis sufferers.