How Long Do Fillings Take for Tooth Cavities? | Emergency Dental Service A cavity is essentially a hole in the tooth enamel caused by tooth decay, typically a result of poor oral hygiene. If you develop a problematic cavity, your dentist may need to apply a filling to fix it and prevent further complications. if you are unable to schedule an appointment with your regular dentist, consider searching for a dentist in your area that accepts patients on an emergency basis. Contact Emergency Dental Service our team provides the best Emergency Dentist Woodbridge, NJ 07095 at an affordable price. For more information contact us at 1-888-350-1340 or you can visit our website emergencydentalservice.com