Every 3-4 months, even if it is an electric brush. Some brushes have colored bristles that fade over time as a sign to replace the brush. If the bristles are splayed, bent, or flattened, they won't clean properly. After any illness, especially a cold, flu, sore throat or stomach virus, to avoid reintroducing germs. If you drop your brush on the floor. Don't try to disinfect, just change it! Children often brush harder and chew the bristles, so their brushes might need changing more frequently. Dr. Gallani’s Advanced Dental Care located at ITI Road offers the best dental care in Aundh. We provide comprehensive dental care tailored to your specific requirements in a safe, hygienic and painless way. Contact us on www.gallanidentalcare.com or 08042754192 for an appointment today!!