What is a tofflemire matrix band used for?

A tofflemire matrix band is specifically designed for use in dental procedures involving Class II restorations, which are used to restore cavities that occur on the proximal surfaces of posterior teeth (molars and premolars). The matrix band is used to create a temporary wall around the tooth during the filling process, allowing the dentist to shape and contour the restorative material accurately. This is crucial because these restorations require an excellent seal to prevent leakage between the tooth and the filling material, thereby helping to maintain the tooth's integrity and health.

In the context of the other options, Class I restorations pertain to cavities on the occlusal surfaces of posterior teeth and do not typically require a matrix band. Cleaning teeth relates to dental hygiene practices involving prophylaxis, which do not involve restorative materials. Additionally, the extraction of teeth is a completely different procedure that does not utilize matrix bands, as it involves the removal rather than restoration of the tooth structure. Thus, the tofflemire matrix band serves a key role in facilitating Class II restorations, making it an essential tool in restorative dentistry.