What type of circumferential matrix system is commonly used for primary molars?

The T-band matrix system is specifically designed for primary teeth, particularly primary molars. This matrix is flexible and can conform to the contours of the tooth, providing effective containment for restorative materials during the application of dental fillings. Its circular shape also makes it easy to adapt and secure around the tooth being treated.

Primary molars have unique anatomical features, such as wider interproximal spaces and differing heights compared to permanent molars, which makes the T-band particularly suitable. It allows for improved access and visibility during the restorative process, and because it is around a single tooth, it minimizes excess material overflow and allows for the proper shaping of the filling.

Other options, such as the Tofflemire, which is more commonly used for permanent teeth, may not offer the same adaptability for primary molars. The strip crown serves a different purpose, typically for covering and restoring the coronal portion of primary teeth, while sectional matrices are often used for proximal restorations in permanent teeth, which have different restorative needs. Thus, the T-band is the ideal choice for addressing the unique characteristics of primary molar restorations.