Most dental insurance plans cover the cost of fillings, although the amount of coverage can vary depending on the specifics of your plan. Some insurance plans may only cover a portion of the cost of a filling, while others may cover the entire cost. In addition, some insurance plans may only cover certain types of fillings, such as amalgam fillings, while others may cover a wider range of materials, including composite resin fillings. It’s best to check with your dental insurance provider to determine the specifics of your coverage and any out-of-pocket costs you may incur.