Name a common material used for filling cavities.

Composite resin is a commonly used material for filling cavities due to its aesthetic qualities and versatility. It closely resembles the natural tooth color, allowing for seamless integration into the smile, which makes it particularly popular for visible areas in the mouth. The ability to bond directly to the tooth structure also enhances its durability and resistance to wear, making it an effective option for restoring teeth.

Composite resins are composed of a mixture that includes a plastic resin and fine glass particles, which can be customized in terms of color and translucency. This characteristic allows dental professionals to match the filling accurately to the natural shade of the patient’s teeth. Additionally, composite materials can be shaped and polished to closely mimic the contours and shine of natural enamel, resulting in a restoration that is not only functional but also aesthetically pleasing.

While other materials like amalgam and gold are durable and have their own advantages, they often lack the cosmetic appeal that composite resins provide, especially in areas of the mouth where aesthetics are a priority. Resin ionomers, although useful in certain situations, generally have lower wear resistance and aesthetic quality compared to composite resins. Thus, the widespread favoring of composite resins in modern dentistry stems from their combination of aesthetic appeal, bonding capabilities, and reasonable durability.