Composite filling seeks to replicate the consistency and resistance of a regular tooth. Dentist use a mixture of plastic and glass to fabricate it, making it easy for them to mold and sculpt at will. It can also replicate the color and shape of any tooth, to match the patient’s teeth. Before starting to apply the filling, the dentist has to treat the cavities first by removing them completely from the tooth. Then he or she will apply the composite filling in layers, waiting for each layer to harden using a special light before applying the next one.