Maintain Pro Performance by replacing heads regularly Specifically engineered for our Sonic Pro Electric Toothbrush and with an added micro-point tongue cleaner, these replacement heads deliver advanced plaque removal and enhanced overall oral care. The bristles are perfectly balanced for comfort and cleaning power, giving you professional-level results at home. Its important to replace your heads regularly, and we recommend at least every three months, to keep your Sonic Pro performing at its best and your smile healthy and clean. Please note: Only compatible with the new Sonic Pro Toothbrush Product Packaging may vary