Replacing older silver fillings with modern tooth-colored material is often motivated by aesthetics. Silver amalgam fillings are composed of a mix of metals, including silver, copper, and tin. White fillings use a composite resin, a blend of plastic and fine glass particles that can be matched to the surrounding tooth structure. This replacement is typically considered an elective procedure unless the existing silver filling is failing, cracked, or has new decay underneath it.
Average Price Range for Composite Fillings
The cost for replacing an existing silver filling with a composite resin restoration can vary significantly based on the size of the repair needed. Dentists often calculate the cost based on the number of tooth surfaces the filling covers. A simple, one-surface composite filling generally falls within a national average price range of approximately $150 to $300.
A two-surface composite filling typically costs between $200 and $400. For larger restorations that involve three or more surfaces of the tooth, the expense can range from $200 up to $550 or more.
These figures represent a baseline for the filling material and placement, but they may not include the initial cost associated with removing the old amalgam filling. The total expense is dependent on the complexity of the specific case and the preparation required. It is important to note these are general estimates, and the final price will be determined by the dental office after a full examination.
Variables That Impact the Total Expense
Several factors influence whether the final cost lands at the low or high end of the average price range. The most significant variable is the geographical location of the dental practice, with procedures in major metropolitan areas often costing more than those in rural settings. The size and depth of the existing amalgam filling are also important, as a larger, more complicated filling requires more material and time to replace.
The dentist’s specific technique for removal can also add to the expense, particularly if the office follows a specialized protocol for safe amalgam removal. Such detailed procedures involve extra protective measures, such as a rubber dam, high-volume suction, and an alternative air source for the patient to minimize exposure to mercury vapor during the drilling process. This specialized approach utilizes additional equipment and time, which may result in a higher fee. The specific brand and type of composite resin chosen by the dentist can also affect the overall cost.
The Procedure for Replacing Amalgam Fillings
The replacement procedure is a multi-step process that begins with the safe removal of the existing silver material. The dentist first isolates the tooth using a rubber dam to protect the rest of the mouth from debris and maintain a dry field for the new material. A high-volume evacuation system is utilized near the tooth to suction away the old filling material and any vapor released during the process.
The old amalgam is carefully drilled out in large chunks to minimize the release of heat, which can increase mercury vaporization. Once the old filling is completely removed, the tooth preparation for the composite begins. This involves applying a mild acidic solution, such as 30 to 40 percent phosphoric acid, to the enamel surface to create a rough texture, a process called etching.
After rinsing the etchant, a liquid bonding agent is applied to the prepared tooth structure and cured with a specialized ultraviolet (UV) light. This bonding layer creates a secure adhesive surface for the new material. The tooth-colored composite resin is then applied in small, incremental layers, with each layer cured separately by the UV light to ensure complete hardening and a strong bond. The dentist meticulously sculpts the final layers to restore the tooth’s natural shape and contour before a final polish is applied, ensuring a smooth surface and proper bite alignment.
Dental Insurance and Financing Options
Dental insurance coverage for replacing a silver filling with a composite filling is often not straightforward. If the existing amalgam filling is structurally sound and the replacement is purely for cosmetic reasons, the procedure is typically classified as elective. In these situations, the patient is responsible for the entire cost.
If the replacement is deemed medically necessary due to a fracture, decay under the filling, or a failed margin, insurance usually offers some coverage. However, many plans still practice “amalgam-only coverage” for posterior (back) teeth. This means they will only reimburse the cost up to the price of the cheaper amalgam filling, and the patient is responsible for the difference in cost for the composite resin.
For out-of-pocket expenses, several financing options are commonly available. Many dental offices offer in-house payment plans that allow patients to spread the cost over several months without interest. Alternatively, third-party medical financing companies, such as CareCredit, provide specialized credit lines for healthcare expenses. Reviewing the specific details of your dental insurance plan before the procedure is essential to anticipate your exact out-of-pocket expense.