What Are Amalgam Fillings? | Dental Emergency in Plainfield, NJ 07060 If you have developed a cavity and think you might need a filling, your dentist can provide you with specific advice for your individual dental needs. You should know what amalgam fillings are, how they work, and the benefits of choosing this method of cavity treatment. We provide the best Dental Emergency in Plainfield, NJ at a reasonable price. The team at Emergency Dental Service can help you find a local emergency dental office that can provide cavity treatment. For more information visit our website emergencydentalservice.com or you can contact us at 1-888-350-1340 to schedule emergency cavity treatment.