Which item is used as a clear matrix in restorative dentistry?

• A. Clear matrix
• B. Alginate
• C. Crown remover
• D. Foxes bite planes

Answer: (A)

In restorative dentistry, a clear matrix is used as a transparent wall around the prepared tooth when placing composite resin on anterior teeth. Its transparency lets you clearly see the margins and neighboring teeth while you build up and cure the resin, which helps you shape the restoration to have correct contour and a proper contact point. It also protects adjacent teeth from bonding to the resin and allows you to check the palatal/lingual surface as you work. Alginate is for taking dental impressions, not acting as a shaping wall. A crown remover is a tool for taking crowns off, and a Fox plane (bite plane) is used to check and adjust occlusion, not to serve as a matrix for restorations.