PerioGard is used to prevent dry socket. Bacteria that grow on your teeth between brushings can cause dry socket. PerioGard destroys this bacteria. PerioGard oral rinse will help to decrease gum bleeding and redness and swelling of your gums. PerioGard oral rinse will not prevent plaque or tartar from forming on your teeth. Proper tooth brushing and flossing are still needed. Treatment with PerioGard oral rinse usually begins immediately after a dental extraction.